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1

Proceedings of FEDSM'98 1998 ASME Fluids Engineering Division Summer Meeting  

E-print Network

with convoluted trailing edge is extraordinary fluid mechanic device for efficient mixing of two co-flow streams engines and received considerable attention for reducing jet noise during the 1960's. More recently received attention for using in supersonic ejectors for jet noise reduction at aircraft take off

Hu, Hui

2

Proceedings of ASME 2009 2009 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

of the liquid piston includes the fluidyne Stirling engine, also used for water pumping [2-4]. A preliminary1 Proceedings of ASME 2009 2009 ASME International Mechanical Engineering Congress Mechanical Energy and Power Systems Lab Department of Mechanical Engineering Worcester Polytechnic Institute

Van de Ven, James D.

3

1 Copyright 2010 by ASME ASME 2010 International Mechanical Engineering Congress and Exposition  

E-print Network

processes and a conceptual Liquid Piston Stirling Engine are immediate applications. Proposed is a thin1 Copyright © 2010 by ASME -DRAFT- ASME 2010 International Mechanical Engineering Congress was an inspiration for the BHEX concept. He draws connections between optimal engineering design and #12;2 Copyright

Van de Ven, James D.

4

1 Copyright 2010 by ASME Proceedings of the 3rd Joint US-European Fluids Engineering Summer Meeting and  

E-print Network

a promising means for manipulating interfaces between "thick" and "thin" fluids and for reducing the hydraulic Brook, New York 11794, USA thomas.cubaud@stonybrook.edu ABSTRACT The manipulation of highly viscous extensional microgeometries permits the manipulation of complex phenomena such as viscous buckling, wetting

Cubaud, Thomas

5

1 Copyright 2008 by ASME Proceedings of the ASME 2008 International Design Engineering Technical Conferences & Computers and  

E-print Network

1 Copyright © 2008 by ASME Proceedings of the ASME 2008 International Design Engineering Technical for textiles and glass, preventing stains and improving clarity [3, 5]. Some coatings appear capable

6

Accelerator System Model (ASM) user manual with physics and engineering model documentation. ASM version 1.0  

SciTech Connect

The Accelerator System Model (ASM) is a computer program developed to model proton radiofrequency accelerators and to carry out system level trade studies. The ASM FORTRAN subroutines are incorporated into an intuitive graphical user interface which provides for the {open_quotes}construction{close_quotes} of the accelerator in a window on the computer screen. The interface is based on the Shell for Particle Accelerator Related Codes (SPARC) software technology written for the Macintosh operating system in the C programming language. This User Manual describes the operation and use of the ASM application within the SPARC interface. The Appendix provides a detailed description of the physics and engineering models used in ASM. ASM Version 1.0 is joint project of G. H. Gillespie Associates, Inc. and the Accelerator Technology (AT) Division of the Los Alamos National Laboratory. Neither the ASM Version 1.0 software nor this ASM Documentation may be reproduced without the expressed written consent of both the Los Alamos National Laboratory and G. H. Gillespie Associates, Inc.

NONE

1993-07-01

7

Proceedings of IMECE 2005 2005 ASME International Mechanical Engineering Congress Exposition  

E-print Network

Proceedings of IMECE 2005 2005 ASME International Mechanical Engineering Congress Exposition Nov. 5 Transfer Laboratory Department of Mechanical Engineering University of Waterloo, Waterloo, ON, Canada N2L 3. Wall roughness and slope are assumed to possess Gaussian, isotropic distributions. Fractal concepts

Bahrami, Majid

8

Proceedings of DETC'99 1999 ASME Design Engineering Technical Conferences  

E-print Network

increasingly make several variations of a product, each being geared toward a different market niche often sees benefits through reduction of inventory (Baker et al. (1986), Gerchak et al. (1988)), reduction in the proliferation of differ- 1 Copyright © 1999 by ASME #12;ent parts (Martin and Ishii (1996

Papalambros, Panos

9

1 Copyright 2010 by ASME Proceedings of the ASME 2010 International Design Engineering Technical Conferences &  

E-print Network

Institute for Computer-Aided Methods in Mechanical Engineering Johannes Kepler University Linz, Austria in Mechanical Engineering Johannes Kepler University Linz, Austria klaus.zeman@jku.at ABSTRACT During all phases peter.hehenberger@jku.at Alexander Egyed Institute for Systems Engineering and Automation Johannes

Egyed, Alexander

10

1 Copyright 2013 by ASME Proceedings of the ASME 2013 International Design Engineering Technical Conference &  

E-print Network

uncertainty) and can be Aliakbar Alamdari Mechanical and Aerospace Engineering, SUNY at Buffalo Buffalo, NY, 14260 aalamdar@buffalo.edu Xiaobo Zhou Mechanical and Aerospace Engineering, SUNY at Buffalo Buffalo, NY, 14260 xzhou9@buffalo.edu Venkat N. Krovi Mechanical and Aerospace Engineering, SUNY at Buffalo Buffalo

Krovi, Venkat

11

1 Copyright 2007 by ASME Proceedings of the 2007 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

-Aided Design systems that are used to design printed circuit boards (PCB), integrated circuits (IC), and other Computer-Aided Design and Engineering (ECAD/ECAE) has been subject to major and rapid change over the past couple of years. Electrical Engineering Computer-Aided Design (CAD) tools developed in the early to mid

12

Proceedings of the ASME Fuel Cell Division 2000: The 2000 ASME International Mechanical Engineering Congress & Exposition  

E-print Network

Engineering Congress & Exposition: Nov. 5 ­ 10, Walt Disney World Dolphin, Orlando, FL THREE DIMENSIONAL - anode Superscripts o gas channel inlet value eff effective value sat saturation value #12;INTRODUCTION. In this design two flow channels around each current-collector shoulder have a dead-end, so the reactant gas

Wang, Chao-Yang

13

1 Copyright 2012 by ASME Proceedings of the ASME 2012 International Design Engineering Technical Conference &  

E-print Network

of Mechanical Engineering Georgia Institute of Technology Atlanta, Georgia, 30332 ABSTRACT The rise of cloud. Considering the benefits of cloud computing to the information technology sector, we present a review of current research initiatives and applications of the cloud computing paradigm related to product design

14

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Design Engineering Technical Conferences &  

E-print Network

of Mechanical and Aerospace Engineering University at Buffalo ­ SUNY Buffalo, NY 14260 edd4@buffalo.edu Phil at Buffalo ­ SUNY Buffalo, NY 14260 pcormier@buffalo.edu Deborah Moore-Russo Assistant Professor Department of Learning and Instruction University at Buffalo ­ SUNY Buffalo, NY 14260 dam29@buffalo.edu Kemper Lewis

Lewis, Kemper E.

15

1 Copyright 2009 by ASME Proceedings of the ASME 2009 International Design Engineering Technical Conferences &  

E-print Network

to as kinetostatic analysis) for planar mechanisms is stated as follows: Given the mechanism, desired kinematic MECHANISMS INVERSE DYNAMICS Robert L. Williams II, Ph.D. Professor Department of Mechanical Engineering, Ohio-known matrix method commonly in use for the linear inverse dynamics problem of planar mechanisms. Any mechanism

Williams II, Robert L.

16

Mechanical Energy and Power Systems Laboratory Mechanical Energy and Power Systems Laboratory Proceedings of the ASME 2009 International Mechanical Engineering Conference and  

E-print Network

in the past, re- cent developments in Stirling engine technology utilizing rolling diaphragm seals piston Stirling [2] engine, it was decided that a rolling diaphragm seal could be used to effectively Proceedings of the ASME 2009 International Mechanical Engineering Conference and Exposition ASME/IMECE 2009

Van de Ven, James D.

17

Proceedings of ASME Internal Combustion Engine Division 2009 Fall Technical Conference September 27-30, 2009, Lucerne, Switzerland  

E-print Network

Proceedings of ASME Internal Combustion Engine Division 2009 Fall Technical Conference ICEF 2009 Internal Combustion Engine Division Fall Technical Conference ICEF2009 September 20-24, 2009, Lucerne AND ANALYSIS OF THE SOOT EMISSIONS FROM A COMMON RAIL DIESEL ENGINE USING TWO FUELS Patrick Kirchen Laboratory

Daraio, Chiara

18

Proceedings of ASME 2012 Internal Combustion Engine Division Spring Technical Conference May 69, 2012, Torino, Piemonte, Italy  

E-print Network

Proceedings of ASME 2012 Internal Combustion Engine Division Spring Technical Conference ICES 2012 and comparisons with data from a single-cylinder engine indicate that, at high CV, the evolution of combustion but the evo- lution of the combustion phasing is governed by the interactions between engine cycles

Stefanopoulou, Anna

19

Mechanical Engineering ME 3720 FLUID MECHANICS  

E-print Network

Mechanical Engineering ME 3720 FLUID MECHANICS Pre-requisite: ME 2330 Co-requisite: ME 3210) to develop an understanding of the physical mechanisms and the mathematical models of fluid mechanics of fluid mechanics problems in engineering practice. The basic principles of fluid mechanics

Panchagnula, Mahesh

20

Proceedings of ASME FEDSM '01 2001 ASME Fluids Engineering Division Summer Meeting  

E-print Network

, serpentine inlet ducts are used for low- observability constrained propulsion installations. To ob- tain. To reduce the radar signature from the compressor face, a serpentine inlet is typically used to block line, Louisiana, May 29 ­ June 1, 2001 FEDSM2001­18275 ACTIVE CONTROL OF INTEGRATED INLET / COMPRESSION SYSTEMS

MacMynowski, Douglas G. - MacMynowski, Douglas G.

21

1 Copyright 2013 by ASME Proceedings of the ASME 2013 Fluids Engineering Summer Meeting  

E-print Network

unimportant, whereas in cavitation the heat flux is relatively unimportant but the pressure field is critical July 7-11, 2013, Incline Village, Nevada, USA FEDSM2013-16479 SHARP INTERFACE CAVITATION MODELING USING A sharp interface cavitation modeling methodology is presented. A simplified Rayleigh-Plesset equation

Yang, Jianming

22

PROCESS INTENSIFICATION USING ENGINEERED FLUID TRANSPORTING FRACTALS  

Microsoft Academic Search

We have determined that engineered fluid transporting fractals can be used to accomplish many of the goals of process intensification. The fractals are used to control the scaling and distribution of fluids. Fractals allow fluid properties, such as eddy size or concentration distributions, to be adjusted in a highly controlled manner. This control is obtained by introducing symmetries into the

Mike Kearney

2003-01-01

23

Review and Application of ASME NOG-1 and ASME NUM-1-2000  

NASA Technical Reports Server (NTRS)

The intent of the workshop is to review the application of the ASME Nuclear Crane Standards ASME NOG-1 and ASME NUM-1-2000. The ASME Nuclear Crane standards provide a basis for purchasing overhead handling equipment with enhanced safety features, based upon accepted engineering principles, and including performance and environmental parameters specific to nuclear facilities.

Lytle, Bradford P.; Delgado, H. (Technical Monitor)

2002-01-01

24

Institute of Fluid Mechanics and Engineering Acoustics  

E-print Network

Institute of Fluid Mechanics and Engineering Acoustics Large Kundt's tubes Click to insert Property measurement Acoustical Property measurement Parameter Principle/Method: Standard absorption coefficient, acoustic impedance Large Kundt's tubes (impedance tubes) Determination of sound

Berlin,Technische Universität

25

Stirling engine with air working fluid  

DOEpatents

A Stirling engine capable of utilizing air as a working fluid which includes a compact heat exchange module which includes heating tube units, regenerator and cooler positioned about the combustion chamber. This arrangement has the purpose and effect of allowing the construction of an efficient, high-speed, high power-density engine without the use of difficult to seal light gases as working fluids.

Corey, John A. (North Troy, NY)

1985-01-01

26

` 1 Copyright 2008 by ASME Proceedings of the 9th Biennial ASME Conference on Engineering Systems Design and Analysis  

E-print Network

FOR SPRAYING AND POLLINATING DATE PALM TREES Amir Shapiro1 Dept. of Mechanical Engineering Eran Korkidi Dept Engineering and Management 1 Lecturer and author of correspondence ABSTRACT Spraying and pollinating date palm and is currently under preliminary experiments. INTRODUCTION Spraying and pollinating of date palm trees in Israel

ben-Shahar, Ohad

27

1 Copyright 2011 by ASME Proceedings of the ASME International Design Engineering Technical Conferences & Computers and Information  

E-print Network

& Decision Sciences Carnegie Mellon University Pittsburgh, PA 15213 tabibnia@andrew.cmu.edu ABSTRACT of Mechanical Engineering Carnegie Mellon University Pittsburgh, PA, 15213 Email: sylcott@cmu.edu Jonathan Cagan Integrated Design Innovation Group Department of Mechanical Engineering Carnegie Mellon University Pittsburgh

Cagan, Jonathan

28

Engineering fluid flow using sequenced microstructures.  

PubMed

Controlling the shape of fluid streams is important across scales: from industrial processing to control of biomolecular interactions. Previous approaches to control fluid streams have focused mainly on creating chaotic flows to enhance mixing. Here we develop an approach to apply order using sequences of fluid transformations rather than enhancing chaos. We investigate the inertial flow deformations around a library of single cylindrical pillars within a microfluidic channel and assemble these net fluid transformations to engineer fluid streams. As these transformations provide a deterministic mapping of fluid elements from upstream to downstream of a pillar, we can sequentially arrange pillars to apply the associated nested maps and, therefore, create complex fluid structures without additional numerical simulation. To show the range of capabilities, we present sequences that sculpt the cross-sectional shape of a stream into complex geometries, move and split a fluid stream, perform solution exchange and achieve particle separation. A general strategy to engineer fluid streams into a broad class of defined configurations in which the complexity of the nonlinear equations of fluid motion are abstracted from the user is a first step to programming streams of any desired shape, which would be useful for biological, chemical and materials automation. PMID:23652014

Amini, Hamed; Sollier, Elodie; Masaeli, Mahdokht; Xie, Yu; Ganapathysubramanian, Baskar; Stone, Howard A; Di Carlo, Dino

2013-01-01

29

Proceedings of ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

Email: earisoy@andrew.cmu.edu Levent Burak Kara Department of Mechanical Engineering Carnegie Mellon Arisoy Department of Mechanical Engineering Carnegie Mellon University Pittsburgh, Pennsylvania 15213 discussions and observations with the artists at Carnegie Mellon University's Design Studio, modifica- tions

Kara, Levent Burak

30

Proceedings of HT2007 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference  

E-print Network

. The development of Micro-Electro Mechanical Systems (MEMS) has found major applications in sensor technology: · Provide a tabulated data-bank with information on temperature measurements, instrumentation, Copyright © 2007 by ASME1 #12;uncertainties and obse

Ghajar, Afshin J.

31

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and  

E-print Network

procurement-centric approaches offer only a limited view when assessing parts used in long life cycle products.C., USA DETC2011- 47593 A MODEL FOR MAKING PART SOURCING DECISIONS FOR LONG LIFE CYCLE PRODUCTS Varun J. Prabhakar and Peter Sandborn CALCE Center for Advanced Life Cycle Engineering Department of Mechanical

Sandborn, Peter

32

Using Computers in Fluids Engineering Education  

NASA Technical Reports Server (NTRS)

Three approaches for using computers to improve basic fluids engineering education are presented. The use of computational fluid dynamics solutions to fundamental flow problems is discussed. The use of interactive, highly graphical software which operates on either a modern workstation or personal computer is highlighted. And finally, the development of 'textbooks' and teaching aids which are used and distributed on the World Wide Web is described. Arguments for and against this technology as applied to undergraduate education are also discussed.

Benson, Thomas J.

1998-01-01

33

IntroductiontoProcessEngineering(PTG) 6. Fluid mechanics  

E-print Network

#6/6 IntroductiontoProcessEngineering(PTG) VST rz13 1/96 6. Fluid mechanics: fluid statics; fluid") Introduction to Process Engineering v.2013 #6/6 IntroductiontoProcessEngineering(PTG) VST rz13 2/96 6.1 Fluid statics #12;#6/6 IntroductiontoProcessEngineering(PTG) VST rz13 3/96 Fluid statics, static pressure /1

Zevenhoven, Ron

34

Fluid mechanics phenomena in microgravity; ASME Winter Annual Meeting, Anaheim, CA, Nov. 8-13, 1992  

NASA Technical Reports Server (NTRS)

This paper is the first in a series of symposia presenting research activity in microgravity fluid mechanics. General topics addressed include two-phase flow and transport phenomena, thermo-capillary flow, and interfacial stability. Papers present mathmatical models of fluid dynamics in the microgravity environment. Applications suggested include space manufacturing and storage of liquids in low gravity.

Siginer, Dennis A. (editor); Weislogel, Mark M. (editor)

1992-01-01

35

1 Copyright 2007 by ASME Proceedings of ASME ICNMM2007  

E-print Network

devices that potentially have less environmental impact than internal combustion engines. The polymer1 Copyright © 2007 by ASME Proceedings of ASME ICNMM2007 5 th International Conference water. Flow field channels with hydrophobic coating retain more water, but the distribution of a greater

Kandlikar, Satish

36

Proceedings of the ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

movements analogous to those of carangiform and thunniform fish (which move by deforming their bodies of fish swimming and thereby enable novel engineering applications such as the design of biologically- inspired vehicles. A model for fish swimming is presented in [3] where the fish is considered

Leyendecker, Sigrid

37

Proceedings of IMECE 2003 2003 ASME International Mechanical Engineering Congress and RD Expo  

E-print Network

EC = elastoconstriction H = Hertz j = joint L = large mic = microcontact P = plastic deformation r surface roughness, µm 0 = roughness reference value =1 µm = non-dimensional parameter /aH = Poisson's ratio, - 1 Copyright c° 2003 by ASME #12;Subscripts 0 = value at origin 1, 2 = surface 1,2 a = apparent

Bahrami, Majid

38

Boston University Department of Mechanical Engineering ME 303 Fluid Mechanics  

E-print Network

Boston University Department of Mechanical Engineering ME 303 ­ Fluid Mechanics Fall 2011 Class: EK301 Engineering Mechanics Course Textbook: Fundamentals of Fluid Mechanics, 6th ed., Munson B. Reference Texts: Fluid Mechanics, Landau and Lifshitz, Vol. 6 Fluid Mechanics, Y. Cengel and J. Cimbala

39

Fundamentals of Engineering (FE) Exam Fluid Mechanics Review  

E-print Network

Fundamentals of Engineering (FE) Exam Fluid Mechanics Review Steven Burian Civil & Environmental Engineering March 22, 2013 #12;Morning (Fluid Mechanics) A. Flow measurement B. Fluid properties C. Fluid and mechanical energy balance B. Hydrostatic pressure C. Dimensionless numbers (e.g., Reynolds Number) D. Laminar

Provancher, William

40

CONTROL OF FLUID DYNAMICS WITH ENGINEERED FRACTALS - ADSORPTION PROCESS APPLICATIONS  

Microsoft Academic Search

Engineered fluid transporting fractals can be utilized for a broad range of fluid control applications. These applications include use as alternatives to turbulence, controlled formation of fluid geometry and rapid transition of effective fluid dimension. As applied to adsorption processes, fractals can be used to provide rapid and homogeneous distribution of fluids to form surfaces or rapid distribution and collection

MIKE KEARNEY

1999-01-01

41

Proceedings of ESDA 2004 7th Biennial ASME Conference on Engineering Systems Design and Analysis  

E-print Network

of CAD Laboratory Depart. of Production Engineering & Management Technical University of Crete 73100 Laboratory Depart. of Production Engineering & Management Technical University of Crete 73100 Chania, Greece industries, electrical/electronic, fire and safety, footwear, plastics, ceramics and textiles, have

Aristomenis, Antoniadis

42

Department of Mechanical Engineering Spring 2013 Fluid Level Sensing  

E-print Network

PENNSTATE Department of Mechanical Engineering Spring 2013 Fluid Level Sensing Overview The current course of action to determine the level of fluid in a tank on a tractor requires the operator to get out a system capable of measuring the volume of fluid in a non-uniform reservoir and displaying the value

Demirel, Melik C.

43

DESIGN OF ENGINE INTAKE SYSTEMS USING COMPUTER SIMULATIONS ASME PAPER ICEF2002-523  

EPA Science Inventory

A computational study of a direct injection engine intake system was conducted to determine if adding scrouds to the intake valves would improve the swirl performance in the engine. The results show that higher swril was generated with a single port and a shrouded valve....

44

Tracing Injection Fluids in Engineered Geothermal Systems  

NASA Astrophysics Data System (ADS)

The reinjection of produced fluids is crucial to the effective management of geothermal reservoirs, since it provides a mechanism for maintaining reservoir pressures while allowing for the disposal of a toxic byproduct. Tracers are essential to the proper location of injection wells since they are the only known tool for reliably characterizing the flow patterns of recirculated fluids. If injection wells are placed too close to production wells, then reinjected fluids do not have sufficient residence time to extract heat from the reservoir and premature thermal breakthrough results. If injection wells are placed too far away, then the reservoir risks unacceptable pressure loss. Several thermally stable compounds from a family of very detectable fluorescent organic compounds (the naphthalene sulfonates) were characterized and found to be effective for use as geothermal tracers. Through batch-autoclave reactions, their Arrhenius pseudo-first-order decay-rate constants were determined. An analytical method was developed that allows for the laboratory determination of concentrations in the low parts-per-trillion range. Field experiments in numerous geothermal reservoirs throughout the world have confirmed the laboratory findings. Whereas conservative tracers such as the naphthalene sulfonates are effective tools for indicating interwell flow patterns and for measuring reservoir pore volumes, 'reactive' tracers can be used to constrain fracture surface area, which is the effective area for heat extraction. This is especially important for engineered geothermal system (EGS) wells, since reactive tracers can be used to measure fracture surface area immediately after drilling and while the well stimulation equipment is still on site. The reactive properties of these tracers that can be exploited to constrain fracture surface area are reversible sorption, contrasting diffusivity, and thermal decay. Laboratory batch- and flow-reactor experiments in combination with numerical simulation studies have served to identify candidate compounds for use as reactive tracers. An emerging class of materials that show promise for use as geothermal and EGS tracers are colloidal nanocrystals (quantum dots). These are semiconductor particles that fluoresce as a function of particle size. Preliminary laboratory experimentation has demonstrated that these thermally stable, water-soluble particles can serve as conservative tracers for geothermal applications. Likewise, they show promise as potential reactive tracers, since their surfaces can be modified to be reversibly sorptive and their diameters are sufficiently large to allow for contrasts in diffusivity with solute tracers.

Rose, P. E.; Leecaster, K.; Mella, M.; Ayling, B.; Bartl, M. H.

2011-12-01

45

The Fluid Dynamics of an Idealized Pulsed Detonation Engine  

Microsoft Academic Search

Pulsed Detonation Engines (PDEs) have received considerable attention recently because they have the potential to make a major impact in aerospace propulsion. In this talk, detailed numerical simulations are used to examine the basic fluid dynamics of an idealized pulsed detonation engine. The simulated engine consists of a tube closed at one-end and open at the other. It is shown

K. Kailasanath; G. Patnaik

2000-01-01

46

Proceedings of IDETC/CIE 2007 Proceedings of the ASME 2007 International Design Engineering Technical Conferences &  

E-print Network

Kurt Anderson Adarsh Binani Department of Mechanical, Aerospace and Nuclear Engineering Rensselaer. NOMENCLATURE Ak Spatial (6 dimensional) acceleration of body k. Ak Recursive spatial acceleration of body k. Ak Backward recursive spatial acceleration of body k. Ak i Recursive spatial acceleration of handle i on body

Anderson, Kurt S.

47

Proceedings of IMECE2005 2005 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

to diffusion, thermal wave, phonon-electron interaction [5, 6], and pure phonon scattering (Guyer et al. [12 FOR EFFICIENTLY SOLVING A MICROSCALE HEAT TRANSPORT EQUATION DURING FEMTOSECOND LASER HEATING OF NANOSCALE METAL FILMS Ravi Ranjan Kumar J. M. McDonough M. P. Meng¨uc¸ Department of Mechanical Engineering University

McDonough, James M.

48

Accumulation of H 2 O 2 in xylem fluids of cucumber stems during ASM-induced systemic acquired resistance (SAR) involves increased LOX activity and transient accumulation of shikimic acid  

Microsoft Academic Search

Systemic acquired resistance (SAR) to Colletotrichum orbiculare was induced in young cucumber (Cucumis sativus) plants within 3h of ASM (acibenzolar-S-methyl) application onto the first leaves. A potent signal associated with significant\\u000a accumulation of hydrogen peroxide in xylem fluids from severed stems appeared to be rapidly translocated from elicited lower\\u000a leaves within 3h and 6h after treatment. Some metabolites of the

T.-C. Lin; H. Ishii

2009-01-01

49

ADDRESSING ENVIRONMENTAL ENGINEERING CHALLENGES WITH COMPUTATIONAL FLUID DYNAMICS  

EPA Science Inventory

This paper discusses the status and application of Computational Fluid Dynamics )CFD) models to address environmental engineering challenges for more detailed understanding of air pollutant source emissions, atmospheric dispersion and resulting human exposure. CFD simulations ...

50

A Prototype Automotive Engine Mount Using Electrorheological Fluids  

Microsoft Academic Search

This article describes an experimental investigation into the utilisation of an electrorheological fluid in a prototype au tomotive engine mount. The fluid is sandwiched between two plane electrodes and when electrically stressed, is subject to a cyclic variation in applied load. Of particular interest is the effect of a change in the applied field strength on the magnitude of the

J. L. Sproston; R. Stanway; M. J. Prendergast; J. R. Case; C. E. Wilne

1993-01-01

51

1 Copyright 2002 by ASME Proceedings of DETC'02  

E-print Network

Design, Genetic Algorithms 1. INTRODUCTION In the design of today's increasingly complex engineering1 Copyright © 2002 by ASME Proceedings of DETC'02 ASME 2002 Design Engineering Technical Conferences and Computers and Information in Engineering Conference Montreal, Canada, September 29-October 2

Lewis, Kemper E.

52

Lehigh Valley Chapter, ASM International ASM Materials Camp -Lehigh Valley for High School Students  

E-print Network

Lehigh Valley Chapter, ASM International ASM Materials Camp - Lehigh Valley for High School in helping talented high school sophomores and juniors (next year's juniors and seniors) learn more about by faculty members in the Materials Science and Engineering Department. The high school students we've had

Gilchrist, James F.

53

Proceedings of FEDSM'03: ASME/JSME Joint Fluids Engineering Conference  

E-print Network

require serpentine channels to allow longer contact length within a compact area. The necessity both experiments and modeling of pressure distribution in microchannels. Chen et al. [6] have studied with first-order slip boundary conditions to study compressibility and rarefied effects in long microchannels

Roy, Subrata

54

Proceedings of FEDSM'02 2002 ASME Fluid Engineering Division Summer Meeting  

E-print Network

analysis of Hagen-Poiseuille pipe flow reveals that all all eigenfunctions are stable; nevertheless channel flow. (Boberg & Brosa 1988) had already introduced a similar concept for flow in a pipe, according to which a longitudinal vortex super- imposed to a two-dimensional boundary layer can lift up low

Zuccher, Simone

55

Proceedings of FEDSM2003 2003 4TH ASME JSME Joint Fluids Engineering Conference  

E-print Network

quanti- ties such as kinetic energy [2­5] . Discrete energy conservation ensures that the flux of kinetic defined at cell centers p pressure potential V cell volume VISC viscous term in Navier Stokes equations vn-dissipative central-difference schemes are used. One solution to this problem is to develop non-dissipative numerical

Mahesh, Krishnan

56

Proceedings of FEDSM99 3rd ASME/JSME Joint Fluids Engineering Conference  

E-print Network

- tions the jet rarely consists of a single drop. Typically, the lead drop exits the nozzle of the device of the nozzle, through the formation of the lead and satellite droplets, to the eventual coalescence of some;The provisional variable represents the signed dis- tance to the free surface. The variable F

Sussman, Mark

57

Proceedings of FEDSM'03 4TH ASME_JSME Joint Fluids Engineering Conference  

E-print Network

, July 6­11, 2003 FEDSM2003-45606 OPTICAL SHOCK WAVE IMAGING FOR AVIATION SECURITY Gary S. Settles by the present authors, it was noted that all previous aviation security studies lacked optical shock imaging State University, University Park, PA USA Joseph A. Gatto Transportation Security Laboratory, William J

Settles, Gary S.

58

Proceedings of FEDSM98 1998 ASME Fluids Engineering Division Summer Meeting  

E-print Network

, Washington, DC, USA FEDSM98-5100 ON THE DEVELOPMENT OF AN INTELLIGENT CODE VALIDATION SYSTEM FOR THE RAPID Issues related to the development of a Code Validation Sys- tem (CVS) are presented for the rapid

Jacob, Jamey

59

CalTech Chemical Engineering: Fluid Mechanics  

NSDL National Science Digital Library

This website describes a research project focused on fluid mechanics and transport processes, with an emphasis on "problems at the interface between continuum mechanics and statistical mechanics." The John F. Brady research group uses its own computational method known as Stokesian Dynamics to study complex fluids, and develop and solve macroscopic equations to describe transport in heterogeneous media. Most of the abstracts from the more recent publications are available online. Videos produced as part of the group's research include, Diffusion in Simple Shear Flow, Stokesian Dynamics: Pressure Driven Flow of Suspensions, Stokesian Dynamics Simulation of an Electroreological Fluid, Statistical Mechanics of Bubbly Liquids, Simulation of Colloidal, and Brownian Dynamics. There are also a few presentations that are available online in the pdf format.

60

1 Copyright 2007 by ASME Proceedings of IMECE 2007  

E-print Network

1 Copyright © 2007 by ASME Proceedings of IMECE 2007 2007 ASME International Mechanical Engineering­44066 INTRODUCING MODERN LABORATORY EXPERIENCES TO MECHANICAL AND AEROSPACE ENGINEERING STUDENTS Frank K. Lu, Philip workshops and laboratories toward classroom lectures and software domina- tion. This paper describes

Texas at Arlington, University of

61

Six cycle combustion and fluid vaporization engine  

Microsoft Academic Search

A reciprocating piston engine is described of the type including a piston reciprocal in a cylinder toward and away from an expansion chamber at one end of the cylinder and also provided with intake and exhaust valves openable and closable in timed sequence with reciprocation of the piston. The valves are closed during the compression and power strokes of the

Tibbs

1976-01-01

62

The Fluid Dynamics of a Pulse Detonation Engine-II  

Microsoft Academic Search

Pulsed Detonation Engines (PDEs) have received considerable attention recently because they have the potential to make a major impact in aerospace propulsion. Last year, we showed that the fluid dynamics of an idealized PDE, consisting of a tube closed at one end and open at the other is quite complex and depends strongly on the boundary conditions at the open

K. Kailasanath; Gopal Patnaik; Chiping Li

2001-01-01

63

The Fluid Dynamics of a Pulse Detonation Engine-IV  

Microsoft Academic Search

Pulsed Detonation Engines (PDEs) have received considerable attention recently because they have the potential to make a major impact in aerospace propulsion. Previously, the fluid dynamics of an idealized PDE, consisting of a tube closed at one end and open at the other has been presented. Typically, gaseous fuels are used in both experiments and simulations. However, for most practical

K. Kailasanath; S. Cheatham

2003-01-01

64

The Fluid Dynamics of a Pulse Detonation Engine-III  

Microsoft Academic Search

Pulsed Detonation Engines (PDEs) have received considerable attention recently because they have the potential to make a major impact in aerospace propulsion. Previously, we showed that the fluid dynamics of an idealized PDE, consisting of a tube closed at one end and open at the other is quite complex and depends strongly on the boundary conditions at the open end.

K. Kailasanath; Chiping Li

2002-01-01

65

Liquid rocket engine fluid-cooled combustion chambers  

NASA Technical Reports Server (NTRS)

A monograph on the design and development of fluid cooled combustion chambers for liquid propellant rocket engines is presented. The subjects discussed are (1) regenerative cooling, (2) transpiration cooling, (3) film cooling, (4) structural analysis, (5) chamber reinforcement, and (6) operational problems.

1972-01-01

66

ASME Code Efforts Supporting HTGRs  

SciTech Connect

In 1999, an international collaborative initiative for the development of advanced (Generation IV) reactors was started. The idea behind this effort was to bring nuclear energy closer to the needs of sustainability, to increase proliferation resistance, and to support concepts able to produce energy (both electricity and process heat) at competitive costs. The U.S. Department of Energy has supported this effort by pursuing the development of the Next Generation Nuclear Plant, a high temperature gas-cooled reactor. This support has included research and development of pertinent data, initial regulatory discussions, and engineering support of various codes and standards development. This report discusses the various applicable American Society of Mechanical Engineers (ASME) codes and standards that are being developed to support these high temperature gascooled reactors during construction and operation. ASME is aggressively pursuing these codes and standards to support an international effort to build the next generation of advanced reactors so that all can benefit.

D.K. Morton

2011-09-01

67

ASME Code Efforts Supporting HTGRs  

SciTech Connect

In 1999, an international collaborative initiative for the development of advanced (Generation IV) reactors was started. The idea behind this effort was to bring nuclear energy closer to the needs of sustainability, to increase proliferation resistance, and to support concepts able to produce energy (both electricity and process heat) at competitive costs. The U.S. Department of Energy has supported this effort by pursuing the development of the Next Generation Nuclear Plant, a high temperature gas-cooled reactor. This support has included research and development of pertinent data, initial regulatory discussions, and engineering support of various codes and standards development. This report discusses the various applicable American Society of Mechanical Engineers (ASME) codes and standards that are being developed to support these high temperature gascooled reactors during construction and operation. ASME is aggressively pursuing these codes and standards to support an international effort to build the next generation of advanced reactors so that all can benefit.

D.K. Morton

2012-09-01

68

1 Copyright 2005 by ASME Proceedings of IDETC'05  

E-print Network

of biomimetic design is the development of Velcro after observing that cockleburs attach to clothing and fur1 Copyright © 2005 by ASME Proceedings of IDETC'05 ASME 2005 International Design Engineering Beach, California, USA DETC2005-84908 BRIDGING CROSS-DOMAIN TERMINOLOGY FOR BIOMIMETIC DESIGN I. Chiu

Shu, Lily H.

69

The Fluid Dynamics of a Pulse Detonation Engine-V  

Microsoft Academic Search

Pulsed Detonation Engines (PDE) have received considerable attention recently because they have the potential to make a major impact in aerospace propulsion. Previously, several aspects of the fluid dynamics of a PDE have been presented at these meetings. Reliable and repeated low-energy initiation of detonations in the high-speed flow in PDEs operating on fuel-air mixtures is one of the remaining

K. Kailasanath; C. Li

2004-01-01

70

46 CFR 52.01-2 - Adoption of section I of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2010 CFR

... Adoption of section I of the ASME Boiler and Pressure Vessel Code. 52...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-2 Adoption of section I of the ASME Boiler and Pressure Vessel Code....

2010-10-01

71

46 CFR 52.01-2 - Adoption of section I of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2013 CFR

... Adoption of section I of the ASME Boiler and Pressure Vessel Code. 52...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-2 Adoption of section I of the ASME Boiler and Pressure Vessel Code....

2013-10-01

72

46 CFR 52.01-2 - Adoption of section I of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2011 CFR

... Adoption of section I of the ASME Boiler and Pressure Vessel Code. 52...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-2 Adoption of section I of the ASME Boiler and Pressure Vessel Code....

2011-10-01

73

46 CFR 52.01-2 - Adoption of section I of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2012 CFR

... Adoption of section I of the ASME Boiler and Pressure Vessel Code. 52...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-2 Adoption of section I of the ASME Boiler and Pressure Vessel Code....

2012-10-01

74

46 CFR 53.01-3 - Adoption of section IV of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2013 CFR

...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. 53...CONTINUED) MARINE ENGINEERING HEATING BOILERS General Requirements 53.01-3 Adoption of section IV of the ASME Boiler and Pressure Vessel Code....

2013-10-01

75

Globalization of ASME Nuclear Codes and Standards  

SciTech Connect

With the globalization of the nuclear industry, it is clear that the reactor suppliers are based in many countries around the world (such as United States, France, Japan, Canada, South Korea, South Africa) and they will be marketing their reactors to many countries around the world (such as US, China, South Korea, France, Canada, Finland, Taiwan). They will also be fabricating their components in many different countries around the world. With this situation, it is clear that the requirements of ASME Nuclear Codes and Standards need to be adjusted to accommodate the regulations, fabricating processes, and technology of various countries around the world. It is also very important for the American Society of Mechanical Engineers (ASME) to be able to assure that products meeting the applicable ASME Code requirements will provide the same level of safety and quality assurance as those products currently fabricated under the ASME accreditation process. To do this, many countries are in the process of establishing or changing their regulations, and it is important for ASME to interface with the appropriate organizations in those countries, in order to ensure there is effective use of ASME Codes and standards around the world. (authors)

Swayne, Rick [Reedy Engineering, 3425 South Bascom Ave. Suite E, Campbell, CA 95008 (United States); Erler, Bryan A. [Erler Engineering, Ltd., North Vernon, Indiana (United States)

2006-07-01

76

1 Copyright 2010 by ASME Proceedings of the 8th International Fuel Cell Science, Engineering & Technology Conference  

E-print Network

. Studies have shown that biology is a good source of analogies for engineering design. We believe in engineering design. Biomimetic design takes inspiration from nature to aid in design by humans, including. This paper describes application of the biomimetic design process to a polymer electrolyte membrane fuel cell

Shu, Lily H.

77

1 Copyright 2010 by ASME Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International  

E-print Network

, the utilizing of variable nozzle duckbill valves can optimize marine effluent diffusers and prevent salt water of the variable valve cross-section area and determined, for preliminary analysis purposes, by using a simple

Tullis, Stephen

78

1 Copyright 2010 by ASME Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International  

E-print Network

23501 ABSTRACT Continuous subcutaneous insulin infusion (CSII) therapy, also known as insulin pump of continuous subcutaneous insulin infusion (CSII), also known as insulin pump therapy, as opposed to the more insulin needs; insulin pump software automatically determines the 'bolus' infusion dosages based

Hu, Hui

79

Submitted for Review Journal of O#shore Mechanics and Arctic Engineering, ASME PRACTICAL AIRGAP PREDICTION FOR OFFSHORE STRUCTURES  

E-print Network

PREDICTION FOR OFFSHORE STRUCTURES Bert Sweetman, PhD Assistant Professor Maritime Systems Engineering drilling semisub­ mersibles, these vessels are generally required to remain on station throughout the most

Sweetman, Bert

80

ASME Material Challenges for Advanced Reactor Concepts  

SciTech Connect

This study presents the material Challenges associated with Advanced Reactor Concept (ARC) such as the Advanced High Temperature Reactor (AHTR). ACR are the next generation concepts focusing on power production and providing thermal energy for industrial applications. The efficient transfer of energy for industrial applications depends on the ability to incorporate cost-effective heat exchangers between the nuclear heat transport system and industrial process heat transport system. The heat exchanger required for AHTR is subjected to a unique set of conditions that bring with them several design challenges not encountered in standard heat exchangers. The corrosive molten salts, especially at higher temperatures, require materials throughout the system to avoid corrosion, and adverse high-temperature effects such as creep. Given the very high steam generator pressure of the supercritical steam cycle, it is anticipated that water tube and molten salt shell steam generators heat exchanger will be used. In this paper, the ASME Section III and the American Society of Mechanical Engineers (ASME) Section VIII requirements (acceptance criteria) are discussed. Also, the ASME material acceptance criteria (ASME Section II, Part D) for high temperature environment are presented. Finally, lack of ASME acceptance criteria for thermal design and analysis are discussed.

Piyush Sabharwall; Ali Siahpush

2013-07-01

81

Fluids  

NSDL National Science Digital Library

This Topic in Depth explores the Web's offerings on the physics of fluids. By an educational Web site called School for Champions, the first site is the Fluids lesson plan (1). Here, students or anyone interested can read about the basics of fluids and then take a short interactive quiz on the topic. The second site is maintained by Steve Lower of the Department of Chemistry at Simon Fraser University called Liquids and their Vapors (2). This Adobe Acrobat (.pdf) file contains an eighteen-page document that covers topics such as properties of liquids and changes of state. The next site contains an interactive multimedia activity presented by explorescience.com called Floating Log (3). The site allows users to explore how a fluid can affect buoyancy by letting them change the mass of the log and the fluid's density. The next site from Purdue University's Chemical Education Web site is called Liquids (4). This page describes the structure of liquids, what kinds of materials form liquids, vapor pressure, and more. The fifth site, offered by Professor M.S. Cramer at the College of Engineering at Virginia Tech, is entitled Gallery of Fluid Dynamics (5). It contains movies, animations, photographs, and descriptions of various fluid mechanics topics such as condensation, shock waves, and supersonic cars. Next comes the Innovative Technology Solutions Corporation's Fundamental Fluid Mechanics Movies Web site (6). Over thirty short films show how fluids move in various conditions including gravity waves, fire, material transport, and hydraulics. From the University of Waterloo's Department of Mechanical Engineering-Microelectronics Heat Transfer Laboratory comes the next site, called the Fluid Properties Calculator (7). This online tool allows users to select a fluid and enter a temperature to calculate various parameters such as density, viscosity, specific heat, and thermal diffusivity. The last site is the online journal Physics of Fluids (8), which is published monthly by the American Institute of Physics with the cooperation of The American Physical Society Division of Fluid Dynamics. The journal is "devoted to the publication of original theoretical, computational, and experimental contributions to the dynamics of gases, liquids, and complex or multiphase fluids" and provides free full-text articles for online viewing.

Brieske, Joel A.

2002-01-01

82

46 CFR 54.01-2 - Adoption of division 1 of section VIII of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2013 CFR

...of section VIII of the ASME Boiler and Pressure Vessel Code. 54.01-2 Section...CONTINUED) MARINE ENGINEERING PRESSURE VESSELS General Requirements 54...of section VIII of the ASME Boiler and Pressure Vessel Code. (a) Pressure...

2013-10-01

83

46 CFR 54.01-2 - Adoption of division 1 of section VIII of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2012 CFR

...of section VIII of the ASME Boiler and Pressure Vessel Code. 54.01-2 Section...CONTINUED) MARINE ENGINEERING PRESSURE VESSELS General Requirements 54...of section VIII of the ASME Boiler and Pressure Vessel Code. (a) Pressure...

2012-10-01

84

46 CFR 54.01-2 - Adoption of division 1 of section VIII of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2011 CFR

...of section VIII of the ASME Boiler and Pressure Vessel Code. 54.01-2 Section...CONTINUED) MARINE ENGINEERING PRESSURE VESSELS General Requirements 54...of section VIII of the ASME Boiler and Pressure Vessel Code. (a) Pressure...

2011-10-01

85

46 CFR 54.01-2 - Adoption of division 1 of section VIII of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2010 CFR

...of section VIII of the ASME Boiler and Pressure Vessel Code. 54.01-2 Section...CONTINUED) MARINE ENGINEERING PRESSURE VESSELS General Requirements 54...of section VIII of the ASME Boiler and Pressure Vessel Code. (a) Pressure...

2010-10-01

86

1 Copyright 2005 by ASME Proceedings of IDETC/CIE 2005  

E-print Network

1 Copyright © 2005 by ASME Proceedings of IDETC/CIE 2005 ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference September 24-28, 2005, Long AND A CO-EVOLUTIONARY GENETIC ALGORITHM Karim Hamza and Kazuhiro Saitou§ Department of Mechanical

Saitou, Kazuhiro "Kazu"

87

Centre Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls  

E-print Network

Centre Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power and Controls ID: FP0003 Rev: 001 Date: May 31, 2010 Page: 1 of 7 Centre Hydraulic Power Supply;Centre Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power

Saskatchewan, University of

88

Department of Mechanical Engineering Fall 2010 Viscosity Measurement of Troublesome Fluids  

E-print Network

PENNSTATE Department of Mechanical Engineering Fall 2010 Viscosity Measurement of Troublesome Fluids Overview Air Products completes many batches of a variety of different fluids every year altering the composition of the fluid. Objectives The new design needs to shorten the amount of time

Demirel, Melik C.

89

Non-air working fluids for closed-cycle diesel engines  

SciTech Connect

Air, which is 79% nitrogen, is the working fluid in a conventional diesel engine. The nitrogen is discarded after use, along with combustion products. In closed-cycle diesel engines, exhaust gas is re-circulated after combustion-produced by-products are separated and removed from the inert working fluid. Now, the working fluids need not be nitrogen, but may be argon, helium, or carbon dioxide. Each of these gases has its own peculiar characteristics that affect the performance of compression ignition engines. The analyses show what performance trends may be expected when nitrogen is replaced with argon, helium, or carbon dioxide as the inert working fluid in closed-cycle diesel engines.

Shaw, R.; Oman, H.

1983-08-01

90

Studies of Photovoltaic Roofing Systems at Wind Engineering and Fluids Laboratory at Colorado State University  

E-print Network

Studies of Photovoltaic Roofing Systems at Wind Engineering and Fluids Laboratory at Colorado State of photovoltaic technology to generate electricity. Various innovative systems incorporating photovoltaic panels have been developed over the past decades. Prominent among them are photovoltaic roofing systems

91

Thermal and Fluids Engineering at Dryden Flight Research Center in 2008  

NASA Technical Reports Server (NTRS)

This viewgraph presentation reviews thermal structures and fluids engineering at NASA Dryden Research Center. The contents include: 1) SOFIA; 2) In-Flight Infrared Thermography Boundary Layer Transition Measurement; 3) Thermal Testing; and 4) Aerodynamic Heating Analysis.

Kostyk, christopher

2008-01-01

92

IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 3, JUNE 2011 401 Guest Editorial  

E-print Network

IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 3, JUNE 2011 401 Guest Editorial Introduction on Electromagnetic Devices for Pre- cision Engineering" of the IEEE/ASME TRANSACTIONS ON MECHATRONICS (TMECH) is dedicated to the new advances in modeling, design, analysis, control, and validation of elec- tromagnetic

Boyer, Edmond

93

Testing of the Multi-Fluid Evaporator Engineering Development Unit  

NASA Technical Reports Server (NTRS)

Hamilton Sundstrand is under contract with the NASA Johnson Space Center to develop a scalable, evaporative heat rejection system called the Multi-Fluid Evaporator (MFE). It is being designed to support the Orion Crew Module and to support future Constellation missions. The MFE would be used from Earth sea level conditions to the vacuum of space. The current Shuttle configuration utilizes an ammonia boiler and flash evaporator system to achieve cooling at all altitudes. The MFE system combines both functions into a single compact package with significant weight reduction and improved freeze-up protection. The heat exchanger core is designed so that radial flow of the evaporant provides increasing surface area to keep the back pressure low. The multiple layer construction of the core allows for efficient scale up to the desired heat rejection rate. The full scale MFE prototype will be constructed with four core sections that, combined with a novel control scheme, manage the risk of freezing the heat exchanger cores. A sub-scale MFE engineering development unit (EDU) has been built, and is identical to one of the four sections of a full scale prototype. The EDU has completed testing at Hamilton Sundstrand. The overall test objective was to determine the thermal performance of the EDU. The first set of tests simulated how each of the four sections of the prototype would perform by varying the chamber pressure, evaporant flow rate, coolant flow rate and coolant temperature. A second set of tests was conducted with an outlet steam header in place to verify that the outlet steam orifices prevent freeze-up in the core while also allowing the desired thermal turn-down ratio. This paper discusses the EDU tests and results.

Quinn, Gregory; O'Connor, Ed; Riga, Ken; Anderson, Molly; Westheimer, David

2007-01-01

94

Stability of a Three-Station Fluid Network 1 School of Industrial and Systems Engineering  

E-print Network

Stability of a Three-Station Fluid Network 1 J. G. Dai School of Industrial and Systems Engineering Abstract This paper studies the stability of a three-station fluid network. We prove that the global stability region of our three-station network is not monotone in the service times and so, we may move

Hasenbein, John

95

Neutron imaging of hydrogen-rich fluids in geomaterials and engineered porous media: A review  

E-print Network

Neutron imaging of hydrogen-rich fluids in geomaterials and engineered porous media: A review E discoveries as well as answering old questions with respect to the phase structure and flow of hydrogen suited for imaging hydrogen-rich fluids in abiotic non-hydrogenous porous media be- cause

Perfect, Ed

96

Phusis studio: A real-time physics engine for solid and fluid simulation  

Microsoft Academic Search

Along with the development of virtual reality and digital games, the dynamic virtual scenes become more and more complex. Real-time simulation of massive fluid and solid bodies is a challenge in common PC machine. We use the three layer design for the physics engine, so performance optimization can be done apart. Collision detection of solid and fluid is the most

Yue Cao; Chang Liu; Leiting Chen; Xiao Liang; Hongbin Cai

2011-01-01

97

AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, Austin, Texas, 18-21 April 2005.  

E-print Network

46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, Austin, Texas Student, Department of Mechanical and Aeronautical Engineering, Member AIAA. 2 Associate Professor of Mechanical and Aeronautical Engineering, Member AIAA. #12;46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural

Bollt, Erik

98

Mechanical interaction between cells and fluid for bone tissue engineering scaffold: Modulation of the interfacial shear stress  

E-print Network

Mechanical interaction between cells and fluid for bone tissue engineering scaffold: Modulation Analytical solution Bone tissue engineering a b s t r a c t An analytical model of the fluid/cell mechanical n f o Article history: Accepted 1 November 2009 Keywords: Cell fluid interaction Shear stress

Guerraoui, Rachid

99

Post-doctoral Position: Physical Chemistry and Rheology of Complex Fluids Yale Chemical Engineering  

E-print Network

Post-doctoral Position: Physical Chemistry and Rheology of Complex Fluids Yale Chemical Engineering There is an opening for a postdoctoral research associate in the Osuji lab in Chemical Engineering at Yale University investigation of colloidal interactions and rheology of colloidal suspensions composed of fractal particles

Haller, Gary L.

100

High-pressure rocket engine turnaround duct computational fluid dynamics analysis  

Microsoft Academic Search

Current and projected high-pressure, staged-combustion rocket engine designs, such as the XLR129 and space shuttle main engine (SSME), introduced a type of turnaround duct flowpath wherein the turnaround is accompanied by an increase in mean radius and a decrease in fluid velocity through a subsequent diffuser. This turnaround duct flowpath is needed in the rocket engine to conduct high-pressure turbopump

G. B. Cox Jr.

1984-01-01

101

On Waves in Fluids: Some Mathematical, Physical and Engineering Aspects  

Microsoft Academic Search

The subject of waves in fluids is addressed from three complementary points-of-view: (Sect. 2) 60 mathematical forms of the\\u000a acoustic wave equation in fluids, applying to linear and non-linear, non-dissipative and dissipative, sound waves in homogeneous\\u000a or inhomogeneous, steady or unsteady media, at rest or in motion, e.g. potential and vortical flows; (Sect. 3) the physical\\u000a interactions between (i) sound

L. M. B. C. Campos

102

Proceedings of the ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems  

E-print Network

SIMULATIONS OF CHAIN FORMATION AND RESTRUCTURING DYNAMICS IN A MAGNETORHEOLOGICAL FLUID Steve G. Sherman Derek, Maryland, 20742 ABSTRACT Magnetorheological fluids consist of micron sized iron par- ticles mixed Re Reynolds Number 1 Copyright c 2011 by ASME #12;INTRODUCTION Magnetorheological (MR) fluids

Shapiro, Benjamin

103

The interdisciplinary field of Biomedical Engineering combines elements of engineering (electronics, systems analysis, fluid  

E-print Network

32 The interdisciplinary field of Biomedical Engineering combines elements of engineering ) 101 Introduction to Biomedical Engineering (3, Fa) Historical development and survey of major areas comprising biomedical engineering: theoretical neurobiology and systems physiology, biomedical

Rohs, Remo

104

ASME Nuclear Crane Standards for Enhanced Crane Safety and Increased Profit  

NASA Astrophysics Data System (ADS)

The ASME NOG-1 standard, 'Rules for Construction of Overhead and Gantry Cranes', covers top running cranes for nuclear facilities; with the ASME NUM-1 standard, 'Rules for Construction of Cranes, Monorails, and Hoists', covering the single girder, underhung, wall and jib cranes, as well as the monorails and hoists. These two ASME nuclear crane standards provide criteria for designing, inspecting and testing overhead handling equipment with enhanced safety to meet the 'defense-in-depth' approach of the United States Nuclear Regulatory Commission (USNRC) documents NUREG 0554 and NUREG 0612. In addition to providing designs for enhanced safety, the ASME nuclear crane standards provide a basis for purchasing overhead handling equipment with standard safety features, based upon accepted engineering principles, and including performance and environmental parameters specific to nuclear facilities. The ASME NOG-1 and ASME NUM-1 standards not only provide enhanced safety for handling a critical load, but also increase profit by minimizing the possibility of load drops, by reducing cumbersome operating restrictions, and by providing the foundation for a sound licensing position. The ASME nuclear crane standards can also increase profit by providing the designs and information to help ensure that the right standard equipment is purchased. Additionally, the ASME nuclear crane standards can increase profit by providing designs and information to help address current issues, such as the qualification of nuclear plant cranes for making 'planned engineered lifts' for steam generator replacement and decommissioning.

Parkhurst, Stephen N.

2000-01-01

105

Fluid dynamic derivatives: Marine and wind engineering approaches  

Microsoft Academic Search

An alternative formulation, applied in marine and air craft fluid dynamics, of the traditional aerodynamic derivatives model, is presented. The relationship between the derivatives of the two models is derived, from which the exact interdependencies of the derivatives of the traditional model can be found. A forced motion model testing device, termed a planar motion mechanism (PMM), applicable for the

Andreas G. Jensen

1997-01-01

106

Bone tissue engineering: the role of interstitial fluid flow  

NASA Technical Reports Server (NTRS)

It is well established that vascularization is required for effective bone healing. This implies that blood flow and interstitial fluid (ISF) flow are required for healing and maintenance of bone. The fact that changes in bone blood flow and ISF flow are associated with changes in bone remodeling and formation support this theory. ISF flow in bone results from transcortical pressure gradients produced by vascular and hydrostatic pressure, and mechanical loading. Conditions observed to alter flow rates include increases in venous pressure in hypertension, fluid shifts occurring in bedrest and microgravity, increases in vascularization during the injury-healing response, and mechanical compression and bending of bone during exercise. These conditions also induce changes in bone remodeling. Previously, we hypothesized that interstitial fluid flow in bone, and in particular fluid shear stress, serves to mediate signal transduction in mechanical loading- and injury-induced remodeling. In addition, we proposed that a lack or decrease of ISF flow results in the bone loss observed in disuse and microgravity. The purpose of this article is to review ISF flow in bone and its role in osteogenesis.

Hillsley, M. V.; Frangos, J. A.

1994-01-01

107

High efficiency decentralized electrical power generation utilizing diesel engines coupled with organic working fluid rankine-cycle engines operating on diesel reject heat  

Microsoft Academic Search

A comprehensive study of high efficiency electrical power plants, consisting of diesel engines coupled with organic working fluid Rankine-cycle engines (ORCS) operating on the diesel exhaust heat is described. A combined cycle efficiency of 46.3 percent is attained with commercially available diesel engines with a potential for >50 percent using experimental engines. The estimated unit capital cost of a 50

D. T. Morgan; J. P. Davis

1974-01-01

108

1 Copyright 2002 by ASME Proceedings of OMAE'02  

E-print Network

applications including as foundations for mobile drilling rigs (jack-ups) and offshore wind turbines. A special1 Copyright © 2002 by ASME Proceedings of OMAE'02 21st International Conference on Offshore OF OFFSHORE FOUNDATIONS IN SOFT CLAY SOILS B.W. Byrne Department of Engineering Science The University

Byrne, Byron

109

Thermodynamic and thermophysical properties of organic working fluids for Rankine-cycle engines  

Microsoft Academic Search

Refrigerants, especially the halocarbon compounds R-11, R-113 and R-114, are the most suitable organic working fluids for the majority of operational Rankine-cycle engines utilising low grade heat sources. Thus, the quick and accurate evaluation of the thermodynamic and thermo-physical properties of these refrigerants is desirable for the analytical prediction of the performances of individual components of such a Rankine-cycle engine,

O. Badr; P. W. OCallaghan; S. D. Probert

1985-01-01

110

6. Fluid mechanics: fluid statics; fluid dynamics  

E-print Network

1/96 6. Fluid mechanics: fluid statics; fluid dynamics (internal flows, external flows) Ron and Flow Engineering | 20500 Turku | Finland 2/96 6.1 Fluid statics ?bo Akademi University | Thermal and Flow Engineering | 20500 Turku | Finland #12;3/96 Fluid statics, static pressure /1 Two types

Zevenhoven, Ron

111

Study of working fluid selection of organic Rankine cycle (ORC) for engine waste heat recovery  

Microsoft Academic Search

Organic Rankine Cycle (ORC) could be used to recover low-grade waste heat. When a vehicle is running, the engine exhaust gas states have a wide range of variance. Defining the operational conditions of the ORC that achieve the maximum utilization of waste heat is important. In this paper the performance of different working fluids operating in specific regions was analyzed

E. H. Wang; H. G. Zhang; B. Y. Fan; M. G. Ouyang; Y. Zhao; Q. H. Mu

2011-01-01

112

HYPower Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls  

E-print Network

HYPower Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power and Controls ID: FP0002 Rev: 002 Date: May 31, 2010 Page: 1 of 7 Hydraulic Power Supply (HYPower-5462 Secondary Contact: #12;HYPower Hydraulic Power Supply Unit University of Saskatchewan - Mechanical

Saskatchewan, University of

113

East Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls  

E-print Network

East Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power and Controls ID: FP0004 Rev: 001 Date: May 31, 2010 Page: 1 of 7 East Hydraulic Power Supply and Test Bench. Approved By: Primary Contact: Doug Bitner Rm: 1B15.1 966-5462 Secondary Contact: #12;East Hydraulic Power

Saskatchewan, University of

114

FLUID MODELING DEMONSTRATION OF GOOD-ENGINEERING-PRACTICE STACK HEIGHT IN COMPLEX TERRAIN  

EPA Science Inventory

A demonstration study using fluid modeling to determine the good-engineering-practice (GEP) stack height for a power plant installation in complex terrain is discussed. The site chosen for this demonstration study was the Clinch River Power Plant in southwestern Virginia, and a 1...

115

Fluid flow and fuel-air mixing in a motored two-dimensional Wankel rotary engine  

NASA Technical Reports Server (NTRS)

The implicit-factored method of Beam and Warming was employed to obtain numerical solutions to the conservation equations of mass, species, momentum, and energy to study the unsteady, multidimensional flow and mixing of fuel and air inside the combustion chambers of a two-dimensional Wankel rotary engine under motored conditions. The effects of the following engine design and operating parameters on fluid flow and fuel-air mixing during the intake and compression cycles were studied: engine speed, angle of gaseous fuel injection during compression cycle, and speed of the fuel leaving fuel injector.

Shih, T. I.-P.; Nguyen, H. L.; Stegeman, J.

1986-01-01

116

Superhydrophobic surface as a fluid enhancement material in engineering applications  

NASA Astrophysics Data System (ADS)

In this study, a superhydrophobic surface and its relation to the enhancement of the droplet fluid dynamics to the surface of the object materials was investigated. As the comparison, hydrophilic and uncoated surface of an object also investigated. The investigations used height of impact at 89 mm. The high quality speed camera is employed to investigate the droplet dynamic on a copper foil and a calcium fluoride surfaces. Both of the materials are coated with superhydrophobic and hydrophilic surfaces separately. The droplet diameter was analyzed using the program PHANTOM. The droplet contact angle was analyzed by the Goniometry method. The water was dropped on the calcium fluoride and the copper foil using a syringe (sharp tip) with initial droplet diameter of 1.9 mm. To record the droplet fluid shape, the photo micro sensor was placed inside the trigger box below the syringe. The results showed that the superhydrophobic surface both on copper foil and calcium fluoride enhanced the mobility of a droplet compared to the hydrophilic and the uncoated surfaces. The results showed that the maximum droplet diameter on the copper foil coated by the superhydrophobic, the hydrophilic and the uncoated surfaces are 4.7, 5.0, 5.2 mm, respectively; and for the calcium fluoride are 4.5, 5.1 and 5.5 mm, respectively. Meanwhile, the results for the droplet contact angle on the copper foil coated by the superhydrophobic, the hydrophilic and the uncoated surfaces are 20, 90, 160, respectively; and for the calcium fluoride are 25, 95, 165, respectively.

Tetuko, Anggito P.; Khaerudini, Deni S.; Sardjono, Priyo; Sebayang, Perdamean; Rosengarten, Gary

2013-09-01

117

Computational fluid dynamics applied to flows in an internal combustion engine  

NASA Technical Reports Server (NTRS)

The reported investigation is a continuation of studies conducted by Diwakar et al. (1976) and Griffin et al. (1976), who reported the first computational fluid dynamic results for the two-dimensional flowfield for all four strokes of a reciprocating internal combustion (IC) engine cycle. An analysis of rectangular and cylindrical three-dimensional engine models is performed. The working fluid is assumed to be inviscid air of constant specific heats. Calculations are carried out of a four-stroke IC engine flowfield wherein detailed finite-rate chemical combustion of a gasoline-air mixture is included. The calculations remain basically inviscid, except that in some instances thermal conduction is included to allow a more realistic model of the localized sparking of the mixture. All the results of the investigation are obtained by means of an explicity time-dependent finite-difference technique, using a high-speed digital computer.

Griffin, M. D.; Diwakar, R.; Anderson, J. D., Jr.; Jones, E.

1978-01-01

118

1 Copyright 2007 by ASME A LEARNING ALGORITHM FOR OPTIMAL INTERNAL COMBUSTION  

E-print Network

1 Copyright © 2007 by ASME A LEARNING ALGORITHM FOR OPTIMAL INTERNAL COMBUSTION ENGINE CALIBRATION-4256, Email: amaliko@umich.edu ABSTRACT Advanced internal combustion engine technologies have increased combustion engine calibration, fuel economy 1. INTRODUCTION The growing requests for better performance

Papalambros, Panos

119

High-pressure rocket engine turnaround duct computational fluid dynamics analysis  

NASA Astrophysics Data System (ADS)

Current and projected high-pressure, staged-combustion rocket engine designs, such as the XLR129 and space shuttle main engine (SSME), introduced a type of turnaround duct flowpath wherein the turnaround is accompanied by an increase in mean radius and a decrease in fluid velocity through a subsequent diffuser. This turnaround duct flowpath is needed in the rocket engine to conduct high-pressure turbopump turbine discharge gases toward the main injector while maintaining a compact turbomachinery and powerhead flowpath. Current experience in the SSME shows that this type of turnaround duct can experience flow separation with an attendant increase in flow turbulence levels. Advances in computational fluid dynamics techniques over the last decade produced a number of codes which are applicable to the analysis and prediction of flow field behavior within such ducts. A version of the TEACH code developed at Pratt & Whitney Engineering Division was used to analyze three representative turnaround duct configurations. The study included the effects of fluid properties, inlet velocity flowfields, solution grid mesh size, and numerical solution algorithm upon calculated flow. Results include flow streamline comparisons, velocity profiles, and calculated total pressure losses. The results showed that turnaround ducts of the type studied can exhibit separation but that appropriately designed turnaround ducts can be made to function without suffering from internal flow separation.

Cox, G. B., Jr.

1984-10-01

120

Exciting Students About Science & Engineering ...  

E-print Network

applications include nanomachines, bioimplants, smart materials, fuel cells, genetic engineering and spaceExciting Students About Science & Engineering ... ASM MATERIALS CAMP® 2013 MATERIALS IN TODAY'S WORLD Materials science and engineering is a study of the relationship between the structure

Evans, Paul G.

121

Mechanobiology of engineered cartilage cultured under a quantified fluid-dynamic environment  

Microsoft Academic Search

Natural cartilage remodels both in vivo and in vitro in response to mechanical forces and hence mechanical stimulation is\\u000a believed to have a potential as a tool to modulate extra-cellular matrix synthesis in tissue-engineered cartilage. Fluid-induced\\u000a shear is known to enhance chondrogenesis on animal cells. A well-defined hydrodynamic environment is required to study the\\u000a biochemical response to shear of three-dimensional

M. T. Raimondi; F. Boschetti; L. Falcone; G. B. Fiore; A. Remuzzi; E. Marinoni; M. Marazzi; R. Pietrabissa

2002-01-01

122

A computer model of a stirling engine using a two-phase two-component working fluid  

NASA Astrophysics Data System (ADS)

Stirling engines are potentially the most efficient converters of thermal energy to mechanical work that are manufacturable. In addition to its high efficiency capability, it also operates relatively cleanly, quietly, and with multiple fuel capability. Its one deficiency is the low specific power (power output/engine size.) A method of increasing specific power is described. This is by utilizing a two-phase two-component (TPTC) working fluid or one having a carrier gas and a component which changes phase during the cycle, such as a mixture of water and air. In order to study the effect of adding water to the working fluid of a Stirling engine on its operation, a computer model of the system was developed. The TPTC model is an extension of a Stirling engine with an ideal gas working fluid and includes provisions for accounting for differences in heat transfer and flow losses for a TPTC working fluid.

Renfroe, D. A.

1981-10-01

123

Thermal/Fluid Analysis of a Composite Heat Exchanger for Use on the RLV Rocket Engine  

NASA Technical Reports Server (NTRS)

As part of efforts to design a regeneratively cooled composite nozzle ramp for use on the reusable vehicle (RLV) rocket engine, an C-SiC composites heat exchanger concept was proposed for thermal performance evaluation. To test the feasibility of the concept, sample heat exchanger panels were made to fit the Glenn Research Center's cell 22 for testing. Operation of the heat exchanger was demonstrated in a combustion environment with high heat fluxes similar to the RLV Aerospike Ramp. Test measurements were reviewed and found to be valuable for the on going fluid and thermal analysis of the actual RLV composite ramp. Since the cooling fluid for the heat exchanger is water while the RLV Ramp cooling fluid is LH2, fluid and thermal models were constructed to correlate to the specific test set-up. The knowledge gained from this work will be helpful for analyzing the thermal response of the actual RLV Composite Ramp. The coolant thermal properties for the models are taken from test data. The heat exchanger's cooling performance was analyzed using the Generalized Fluid System Simulation Program (GFSSP). Temperatures of the heat exchanger's structure were predicted in finite element models using Patran and Sinda. Results from the analytical models and the tests show that RSC's heat exchanger satisfied the combustion environments in a series of 16 tests.

Nguyen, Dalton

2002-01-01

124

Thermal/Fluid Analysis of a Composite Heat Exchanger for Use on the RLV Rocket Engine  

NASA Technical Reports Server (NTRS)

As part of efforts to design a regeneratively cooled composite nozzle ramp for use on the reusable vehicle (RLV) rocket engine, a C-SiC composite heat exchanger concept was proposed for thermal performance evaluation. To test the feasibility of the concept, sample heat exchanger panels were made to fit the Glenn Research Center's cell 22 for testing. Operation of the heat exchanger was demonstrated in a combustion environment with high heat fluxes similar to the RLV Aerospike Ramp. Test measurements were reviewed and found to be valuable for the on-going fluid and thermal analysis of the actual RLV composite ramp. Since the cooling fluid for the heat exchanger is water while the RLV Ramp cooling fluid is LH2, fluid and therma models were constructed to correlate to the specific test set-up. The knowledge gained from this work will be helpful for analyzing the thermal response of the actual RLV Composite Ramp. The coolant thermal properties for the models are taken from test data. The heat exchanger's cooling performance was analyzed using the Generalized Fluid System Simulation Program (GFSSP). Temperatures of the heat exchanger's structure were predicted in finite element models using Patran and Sinda. Results from the analytical models and the tests show that RSC's heat exchanger satisfied the combustion environments in a series of 16 tests.

Nguyen, Dalton; Turner, Larry D. (Technical Monitor)

2001-01-01

125

Optimal Design of a Torsional Tuned Damper for Marine Diesel Engines Using Fluid-Structure Interaction Analysis  

NASA Astrophysics Data System (ADS)

A torsional tuned damper is usually used in order to reduce the torsional vibration of the crank shaft system in marine diesel engines. The damper consists of leaf springs, fluid chambers, fluid channels, and intermediate masses. The leaf springs provide the stiffening force to the shaft system, and the fluid chambers and channels give the damping force. In this paper, FSI (fluid-structure interaction) analysis by using FEM is carried out for the calculation of the stiffness and damping coefficients of the designed damper. The numerical calculation result about the equivalent damping coefficients is compared to the value obtained from a simple damping simulation model.

Kim, Young-Cheol; Lee, D. H.; Chung, T. Y.; Ham, D. Y.; Kim, Y. B.

126

Symposium on ASME codes and recent advances in PVP and valve technology including a survey of operations research methods in engineering  

SciTech Connect

This book presents the papers given at a symposium on the design and engineering of reactor pressure vessels, pipes and valves. Topics considered at the symposium included computer-aided fatigue design methods for weldments, the propagation of defects under PWR loading conditions, the fatigue of welded joints in elevated-temperature nuclear components, the design of a bolted flange subjected to severe nuclear system thermal transients, and operations research methods.

Fong, J.T.; Hollinger, G.L.; Gowda, B.; Ezekoye, L.I.; Levary, R.R.

1986-01-01

127

Dual reservoir tank for propellant hydraulic fluid for internal combustion engine hydraulically driven cooling fan and for power steering actuating fluid  

Microsoft Academic Search

This patent describes an internal combustion engine reservoir tank comprising a dividing wall between: (a) a first reservoir tank portion for storing a reserve of the first propellant hydraulic fluid, the first flow being taken from the first reservoir tank portion and being returned to the first reservoir tank portion; and (b) a second reservoir tank portion directly adjacent the

K. Fukami; M. Inagaki; S. Oomura; T. Hamamoto

1989-01-01

128

THIESEL 2010 Conference on Thermo-and Fluid Dynamic Processes in Diesel Engines Influence of Nozzle Geometry on Spray Shape, Particle Size, Spray  

E-print Network

THIESEL 2010 Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines Influence Abstract. Air/fuel mixing process in the combustion chamber of Diesel engines plays an important role on Thermo- and Fluid Dynamic Processes in Diesel Engines, Valencia : Spain (2010)" #12;388 C. Hespel, J. B

Paris-Sud XI, Université de

129

Fluid dynamics in a Rotating-Detonation-Engine with micro-injectors  

NASA Astrophysics Data System (ADS)

Rotating detonation engines (RDE's) represent a natural extension of the extensively studied pulse detonation engines (PDE's) for obtaining propulsion from the high efficiency detonation cycle. RDE's require fuel and oxidizer under high pressure to be injected through micro-nozzles from one or two plenums (for premixed and non-premixed). This injection process is critically important to the stability and performance of the RDE. This paper studies the effect of this injection process on the detonation wave within the combustion chamber, with an emphasis on how the fluid dynamics are affected. Both two-dimensional and three-dimensional simulations are done using well proven numerical methods for both the combustion chamber and mixture plenums of an idealized RDE.

Schwer, Douglas

2011-11-01

130

Graduate Studies Environmental Fluid Mechanics  

E-print Network

Graduate Studies Environmental Fluid Mechanics and Water Resources Engineering ENVIRONMENTAL FLUID MECHANICS AND WATER RESOURCES ENGINEERING (EFMWR) The environmental fluid mechanics and water resources Environmental Fluid Mechanics and Hydraulic Engineering research focuses on turbulent entrainment, transport

Jacobs, Laurence J.

131

N-methylation of the Amide Bond by Methyltransferase Asm10 in Ansamitocin Biosynthesis  

PubMed Central

Ansamitocins are potent antitumor agents produced by Actinosynnema pretiosum. As deduced from their structures, an N-methylation on the amide bond is required among the various modifications. The encoded protein by asm10 belongs to SAM-dependent methyltransferase family. Through gene inactivation and complementation, asm10 was proved to be responsible for the N-methylation of ansamitocins. Asm10 is 33.0 kDa in size and present as monomer as determined by gel filtration. Using N-desmethyl-ansamitocin P-3 as substrate, the optimal temperature and pH were determined to be 32 C and 10.0 respectively for Asm10 catalysis. Asm10 also showed broad substrate flexibility toward other N-desmethyl ansamycins and synthetic indolin-2-ones. Through site-directed mutagenesis, Asp154 and Leu155 of Asm10 were confirmed to be essential for its catalysis possibly thorough the binding of SAM. The characterization of this unique N-methyltransferase enriched the toolbox for engineering N-methylated derivatives from both natural and synthetic compounds, which will allow modification of known potential drugs. PMID:21681880

Wu, Yingying; Kang, Qianjin; Shang, Guangdong; Spiteller, Peter; Carroll, Brian; Yu, Tin-Wein; Su, Wenjin; Floss, Heinz G.

2012-01-01

132

Design of a new engine mount for vertical and horizontal vibration control using magnetorheological fluid  

NASA Astrophysics Data System (ADS)

This paper presents a new design of a magnetorheological fluid (MR) mount for vibration control considering both vertical forces and horizontal moments such as are met in various engine systems, including a medium high-speed engine of ship. The newly designed mount, called a MR brake mount, offers several salient benefits such as small size and relatively high load capacity compared with a conventional MR engine mount that can control vertical vibration only. The principal design parameters of the proposed mount are optimally determined to achieve maximum torque with geometric and spatial constraints. Subsequently, the proposed MR mount is designed and manufactured based on the optimized design parameters. It is shown from experimental testing that the proposed mount, which combines MR mount with MR brake, can produce the desired force and torque to reduce unwanted vibration of a medium high-speed engine system of ship subjected to both vertical and horizontal exciting motions. In addition, it is verified that there is no large difference between experiment results and simulation results that are obtained from an analytical model derived in this work.

Phu, D. X.; Choi, S. B.; Lee, Y. S.; Han, M. S.

2014-10-01

133

IEEE/ASME TRANSACTIONS ON MECHATRONICS 1 Technologies for Powered Ankle-Foot Orthotic  

E-print Network

IEEEProof IEEE/ASME TRANSACTIONS ON MECHATRONICS 1 Technologies for Powered Ankle-Foot Orthotic-Wecksler, Member, IEEE, William K. Durfee, and G´eza F. Kogler 3 4 Abstract--Ankle-foot orthoses (AFOs) can be used Index Terms--Active assist, ankle-foot orthosis (AFO), fluid17 power, gait.18 I. MOTIVATION19 FOR MOST

Durfee, William K.

134

Amniotic Fluid-Derived Stem Cells for Cardiovascular Tissue Engineering Applications  

PubMed Central

Recent research has demonstrated that a population of stem cells can be isolated from amniotic fluid removed by amniocentesis that are broadly multipotent and nontumorogenic. These amniotic fluid-derived stem cells (AFSC) could potentially provide an autologous cell source for treatment of congenital defects identified during gestation, particularly cardiovascular defects. In this review, the various methods of isolating, sorting, and culturing AFSC are compared, along with techniques for inducing differentiation into cardiac myocytes and endothelial cells. Although research has not demonstrated complete and high-yield cardiac differentiation, AFSC have been shown to effectively differentiate into endothelial cells and can effectively support cardiac tissue. Additionally, several tissue engineering and regenerative therapeutic approaches for the use of these cells in heart patches, injection after myocardial infarction, heart valves, vascularized scaffolds, and blood vessels are summarized. These applications show great promise in the treatment of congenital cardiovascular defects, and further studies of isolation, culture, and differentiation of AFSC will help to develop their use for tissue engineering, regenerative medicine, and cardiovascular therapies. PMID:23350771

Petsche Connell, Jennifer; Camci-Unal, Gulden; Khademhosseini, Ali

2013-01-01

135

Dual reservoir tank for propellant hydraulic fluid for internal combustion engine hydraulically driven cooling fan and for power steering actuating fluid  

SciTech Connect

This patent describes an internal combustion engine reservoir tank comprising a dividing wall between: (a) a first reservoir tank portion for storing a reserve of the first propellant hydraulic fluid, the first flow being taken from the first reservoir tank portion and being returned to the first reservoir tank portion; and (b) a second reservoir tank portion directly adjacent the first reservoir tank portion for storing a reserve of the second propellant hydraulic fluid, the second flow being taken from the second reservoir tank portion and being returned to the second reservoir tank portion.

Fukami, K.; Inagaki, M.; Oomura, S.; Hamamoto, T.

1989-01-03

136

Modeling Potential Carbon Monoxide Exposure Due to Operation of a Major Rocket Engine Altitude Test Facility Using Computational Fluid Dynamics  

NASA Technical Reports Server (NTRS)

This viewgraph presentation reviews computational fluid dynamics as a tool for modelling the dispersion of carbon monoxide at the Stennis Space Center's A3 Test Stand. The contents include: 1) Constellation Program; 2) Constellation Launch Vehicles; 3) J2X Engine; 4) A-3 Test Stand; 5) Chemical Steam Generators; 6) Emission Estimates; 7) Located in Existing Test Complex; 8) Computational Fluid Dynamics; 9) Computational Tools; 10) CO Modeling; 11) CO Model results; and 12) Next steps.

Blotzer, Michael J.; Woods, Jody L.

2009-01-01

137

Breakdown voltage determination of gaseous and near cryogenic fluids with application to rocket engine ignition  

NASA Astrophysics Data System (ADS)

Liquid rocket engines extensively use spark-initiated torch igniters for ignition. As the focus shifts to longer missions that require multiple starts of the main engines, there exists a need to solve the significant problems associated with using spark-initiated devices. Improving the fundamental understanding of predicting the required breakdown voltage in rocket environments along with reducing electrical noise is necessary to ensure that missions can be completed successfully. To better understand spark ignition systems and add to the fundamental research on spark development in rocket applications, several parameter categories of interest were hypothesized to affect breakdown voltage: (i) fluid, (ii) electrode, and (iii) electrical. The fluid properties varied were pressure, temperature, density and mass flow rate. Electrode materials, insert electrode angle and spark gap distance were the electrode properties varied. Polarity was the electrical property investigated. Testing how breakdown voltage is affected by each parameter was conducted using three different isolated insert electrodes fabricated from copper and nickel. A spark plug commonly used in torch igniters was the other electrode. A continuous output power source connected to a large impedance source and capacitance provided the pulsing potential. Temperature, pressure and high voltage measurements were recorded for the 418 tests that were successfully completed. Nitrogen, being inert and similar to oxygen, a propellant widely used in torch igniters, was used as the fluid for the majority of testing. There were 68 tests completed with oxygen and 45 with helium. A regression of the nitrogen data produced a correction coefficient to Paschen's Law that predicts the breakdown voltage to within 3000 volts, better than 20%, compared to an over prediction on the order of 100,000 volts using Paschen's Law. The correction coefficient is based on the parameters most influencing breakdown voltage: fluid density, spark gap distance, electrode angles, electrode materials and polarity. The research added to the fundamental knowledge of spark development in rocket ignition applications by determining the parameters that most influence breakdown voltage. Some improvements to the research should include better temperature measurements near the spark gap, additional testing with oxygen and testing with fuels of interest such as hydrogen and methane.

Nugent, Nicholas Jeremy

138

Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels  

E-print Network

are shown from a lubrication study of non-touching par- ticles at close distance from each other. For very small gap width, lubrication force corrections are proposed for the normal approach between segment Xl position vector of Lagrangian grid point l V surface of particle ijk solid volume fraction

Lindken, Ralph

139

Advances in numerical simulation of turbulent flows; Proceedings of the Symposium, ASME and JSME Joint Fluids Engineering Conference, 1st, Portland, OR, June 23-27, 1991  

NASA Astrophysics Data System (ADS)

The present conference discusses the modeling of swirling flows with advanced turbulence closures, algebraic expressions for Reynolds stresses, numerical simulation of 3D developing turbulent flows in a square duct with the anisotropic k-epsilon model, the prediction of normal Reynolds stresses with the nonlinear k-epsilon model, combustor flowfield turbulence modeling with the nonlinear k-epsilon model, and the large-eddy simulation of the unsteady turbulent wake of a circular cylinder using FEM. Also discussed are the direct simulation of transient turbulent flows using the generalized method of lines, simulation of 3D shear flows around a nozzle-afterbody, the interface oscillation phenomenon over a cavity in airflow, combustion-wave instabilities in turbulent flows, and modeling the buoyancy-production of dissipation in a plane turbulent plume.

Celik, I.; Kobayashi, T.; Ghia, K. N.; Kurokawa, J.

140

Advances in numerical simulation of turbulent flows; Proceedings of the Symposium, ASME and JSME Joint Fluids Engineering Conference, 1st, Portland, OR, June 23-27, 1991  

Microsoft Academic Search

The present conference discusses the modeling of swirling flows with advanced turbulence closures, algebraic expressions for Reynolds stresses, numerical simulation of 3D developing turbulent flows in a square duct with the anisotropic k-epsilon model, the prediction of normal Reynolds stresses with the nonlinear k-epsilon model, combustor flowfield turbulence modeling with the nonlinear k-epsilon model, and the large-eddy simulation of the

I. Celik; T. Kobayashi; K. N. Ghia; J. Kurokawa

1991-01-01

141

Case study: an incremental approach to re-engineering a legacy FORTRAN Computational Fluid Dynamics code in C++  

Microsoft Academic Search

This article describes a practical approach to the manual re-engineering of numerical software systems. The strategy has been applied to re-develop a medium sized FORTRAN-77 Computational Fluid Dynamics (CFD) code into C++. The motivation for software reverse-engineering is described, as are the special problems which influence the re-use of a legacy numerical code. The aim of this case study was

J. Ewer; B. Knight; D. Cowell

1995-01-01

142

Statistical analysis of the ASME K{sub Ic} database  

SciTech Connect

The American Society of Mechanical Engineers (ASME) K{sub Ic} curve is a function of test temperature (T) normalized to a reference nil-ductility temperature, RT{sub NDT}, namely, T-RT{sub NDT}. It was constructed as the lower boundary to the available K{sub Ic} database. Being a lower bound to the unique but limited database, the ASME K{sub Ic} curve concept does not discuss probability matters. However, a continuing evolution of fracture mechanics advances has led to employment of the Weibull distribution function to model the scatter of fracture toughness values in the transition range. The Weibull statistic/master curve approach was applied to analyze the current ASME K{sub Ic} database. It is shown that the Weibull distribution function models the scatter in K{sub Ic} data from different materials very well, while the temperature dependence is described by the master curve. Probabilistic-based tolerance-bound curves are suggested to describe lower-bound K{sub Ic} values.

Sokolov, M.A. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

1998-02-01

143

Enhanced ASME section XI Appendix L flaw tolerance procedure  

SciTech Connect

Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code has worked since the early 1990s to develop guidelines for the nuclear power industry to evaluate the serviceability of components that are subject to fatigue stresses. Results of this work formed the basis for a non-mandatory Appendix L that became part of the 1996 Addenda to the 1995 Edition of Section XI [1]. A key part of this appendix was the introduction of a damage tolerance based examination strategy designed to assure that the component will operate reliability between subsequent inspections. Since the 1996 introduction of Appendix L into ASME Section XI, the industry and NRC have raised concerns regarding the initial flaw tolerance procedure. New data on the flaw detection capabilities has become available, and these data show that ultrasonic inspections can detect flaws much smaller than assumed during the original development of Appendix L. This information allows for significantly smaller sizes for postulated flaws. A second area of needed improvement was related to the growth of fatigue cracks. A crack growth model was needed to address component fatigue failures for which several fatigue cracks can initiate at multiple sites and then link together to form a single fatigue crack that is much longer than the standard 6:1 aspect ratio reference flaw typically used by ASME Section XI for damage tolerance calculations. In 1999 the ASME Working Group on Operating Plant Criteria (WGOPC) re established the Task Group on Operating Plant Fatigue Assessments (TGOPFA) to address these concerns. This paper summarizes the research results, supporting computations, and technical bases for TGOPFA recommended Appendix L improvements. A detailed sample calculation is presented for a PWR charging nozzle-to-pipe weld.

Gosselin, Stephen R.; Simonen, Fredric A.; Carter, R. G.; Davis, J. M.; Stevens, G. L.

2005-07-01

144

ASME Subsection ISTD recommendations based upon NPAR snubber aging research results  

SciTech Connect

As a result of information obtained during the US Nuclear Regulatory Commission's (NRC) Nuclear Plant Aging Research(NPAR) Program, Snubber Task research, recommendations are made in the three following areas for the next revision of the American Society of Mechanical Engineers (ASME) Operations and Maintenance (OM) Code, Subsection ISTD: Service-Life Monitoring; Visual Examination Attributes; and Failure Grouping and Corrective Action.

Blahnik, D.E.; Brown, D.P.

1991-12-01

145

IEEE/ASME TRANSACTIONS ON MECHATRONICS 1 Model-Based Estimation of Flow Characteristics  

E-print Network

IEEEProof IEEE/ASME TRANSACTIONS ON MECHATRONICS 1 Model-Based Estimation of Flow Characteristics acteristics using an IPMC-beam-based sensor. A dynamic model is11 developed for the IPMC beam under the flow ex-27 haust emissions, advanced sensor technologies are widely28 used for engine management systems

Tan, Xiaobo

146

The interdisciplinary field of Biomedical Engineering combines elements of engineering (electronics, systems analysis, fluid mechanics) with the life  

E-print Network

34 The interdisciplinary field of Biomedical Engineering combines elements of engineering to the complex problems of medical care. The Biomedical Engineering program provides a special competence-med BME students have access to the Universitys Pre-Health advisement office. Biomedical Engineering

Rohs, Remo

147

Thermomechanical analysis of freezing-induced cell-fluid-matrix interactions in engineered tissues  

PubMed Central

Successful cryopreservation of functional engineered tissues (ETs) is significant to tissue engineering and regenerative medicine, but it is extremely challenging to develop a successful protocol because the effects of cryopreservation parameters on the post-thaw functionality of ETs are not well understood. Particularly, the effects on the microstructure of their extracellular matrix (ECM) have not been well studied, which determines many functional properties of the ETs. In this study, we investigated the effects of two key cryopreservation parameters i) freezing temperature and corresponding cooling rate; and ii) the concentration of cryoprotective agent (CPA) on the ECM microstructure as well as the cellular viability. Using dermal equivalent as a model ET and DMSO as a model CPA, freezing-induced spatiotemporal deformation and post-thaw ECM microstructure of ETs was characterized while varying the freezing temperature and DMSO concentrations. The spatial distribution of cellular viability and the cellular actin cytoskeleton was also examined. The results showed that the tissue dilatation increased significantly with reduced freezing temperature (i.e., rapid freezing). A maximum limit of tissue deformation was observed for preservation of ECM microstructure, cell viability and cell-matrix adhesion. The dilatation decreased with the use of DMSO, and a freezing temperature dependent threshold concentration of DMSO was observed. The threshold DMSO concentration increased with lowering freezing temperature. In addition, an analysis was performed to delineate thermodynamic and mechanical components of freezing-induced tissue deformation. The results are discussed to establish a mechanistic understanding of freezing-induced cell-fluid-matrix interaction and phase change behavior within ETs in order to improve cryopreservation of ETs. PMID:23246556

Han, Bumsoo; Teo, Ka Yaw; Ghosh, Soham; Dutton, J. Craig; Grinnell, Frederick

2012-01-01

148

Engineered micro- and nanoscale diamonds as mobile probes for high-resolution sensing in fluid.  

PubMed

The nitrogen-vacancy (NV) center in diamond is an attractive platform for quantum information and sensing applications because of its room temperature operation and optical addressability. A major research effort focuses on improving the quantum coherence of this defect in engineered micro- and nanoscale diamond particles (DPs), which could prove useful for high-resolution sensing in fluidic environments. In this work we fabricate cylindrical diamonds particles with finely tuned and highly reproducible sizes (diameter and height ranging from 100 to 700 and 500 nm to 2 ?m, respectively) using high-purity, single-crystal diamond membranes with shallow-doped NV centers. We show that the spin coherence time of the NV centers in these particles exceeds 700 ?s, opening the possibility for the creation of ultrahigh sensitivity micro- and nanoscale sensors. Moreover, these particles can be efficiently transferred into a water suspension and delivered to the region to probe. In particular, we introduce a DP suspension inside a microfluidic circuit and control position and orientation of the particles using an optical trapping apparatus. We demonstrate a DC magnetic sensitivity of 9 ?T/?Hz in fluid as well as long-term trapping stability (>30 h), which paves the way toward the use of high-sensitivity pulse techniques on contactless probes manipulated within biological settings. PMID:25076417

Andrich, Paolo; Alemn, Benjamn J; Lee, Jonathan C; Ohno, Kenichi; de las Casas, Charles F; Heremans, F Joseph; Hu, Evelyn L; Awschalom, David D

2014-09-10

149

Evaluation of space shuttle main engine fluid dynamic frequency response characteristics  

NASA Technical Reports Server (NTRS)

In order to determine the POGO stability characteristics of the space shuttle main engine liquid oxygen (LOX) system, the fluid dynamic frequency response functions between elements in the SSME LOX system was evaluated, both analytically and experimentally. For the experimental data evaluation, a software package was written for the Hewlett-Packard 5451C Fourier analyzer. The POGO analysis software is documented and consists of five separate segments. Each segment is stored on the 5451C disc as an individual program and performs its own unique function. Two separate data reduction methods, a signal calibration, coherence or pulser signal based frequency response function blanking, and automatic plotting features are included in the program. The 5451C allows variable parameter transfer from program to program. This feature is used to advantage and requires only minimal user interface during the data reduction process. Experimental results are included and compared with the analytical predictions in order to adjust the general model and arrive at a realistic simulation of the POGO characteristics.

Gardner, T. G.

1980-01-01

150

Amniotic Fluid-Derived Stem Cells for Cardiovascular Tissue Engineering Applications  

E-print Network

Recent research has demonstrated that a population of stem cells can be isolated from amniotic fluid removed by amniocentesis that are broadly multipotent and nontumorogenic. These amniotic fluid-derived stem cells (AFSC) ...

Petsche Connell, Jennifer

151

Fluid motion within the cylinder of internal combustion engines - The 1986 Freeman Scholar Lecture  

Microsoft Academic Search

The flow field within the cylinder of internal combustion engines is the most important factor controlling the combustion process. Thus it has a major impact on engine operation. This paper reviews those aspects of gas motion into, within, and out of the engine cylinder that govern the combustion characteristics and breathing capabilities of spark-ignition engines and compression-ignition or diesel engines.

John B. Heywood

1987-01-01

152

Computational fluid dynamics analysis of Space Shuttle main engine multiple plume flows at high-altitude flight conditions  

Microsoft Academic Search

Computational fluid dynamics (CFD) analysis is providing verification of Space Shuttle flight performance details and is being applied to Space Shuttle Main Engine Multiple plume interaction flow field definition. Advancements in real-gas CFD methodology that are described have allowed definition of exhaust plume flow details at Mach 3.5 and 107,000 ft. The specific objective includes the estimate of flow properties

N. S. Dougherty; J. B. Holt; B. L. Liu; S. L. Johnson

1992-01-01

153

Overview of heat transfer and fluid flow problem areas encountered in Stirling engine modeling  

NASA Technical Reports Server (NTRS)

NASA Lewis Research Center has been managing Stirling engine development programs for over a decade. In addition to contractual programs, this work has included in-house engine testing and development of engine computer models. Attempts to validate Stirling engine computer models with test data have demonstrated that engine thermodynamic losses need better characterization. Various Stirling engine thermodynamic losses and efforts that are underway to characterize these losses are discussed.

Tew, Roy C., Jr.

1988-01-01

154

Modelling of a hydraulic engine mount with fluid-structure interaction finite element analysis  

NASA Astrophysics Data System (ADS)

Hydraulic engine mount (HEM) is now widely used as a highly effective vibration isolator in automotive powertrain. A lumped parameter (LP) model is a traditional model for modelling the dynamic characteristics of HEM, in which the system parameters are usually obtained by experiments. In this paper, a fluid-structure interaction (FSI) finite element analysis (FEA) method and a non-linear FEA technology are used to determine the system parameters, and a fully coupled FSI model is developed for modelling the static and lower-frequency performance of an HEM. A FSI FEA technique is used to estimate the parameters of volumetric compliances, equivalent piston area, inertia and resistance of the fluid in the inertia track and the decoupler of an HEM. A non-linear FEA method is applied to determine the dynamic stiffness of rubber spring of the HEM. The system parameters predicated by FEA are compared favorably with experimental data and/or analytical solutions. A numerical simulation for an HEM with an inertia track and a free decoupler is performed based on the FSI model and the LP model along with the estimated system parameters, and again the simulation results are compared with experimental data. The calculated time histories of some variables in the model, such as the pressure in the upper chamber, the displacement of the free decoupler and the volume flow through the inertia track and the decoupler, under different excitations, elucidate the working mechanism of the HEM. The pressure distribution calculated with the FSI model in the chambers of the HEM validates the assumption that the pressure distribution in the upper and lower chamber is uniform in the LP model. The work conducted in the paper demonstrates that the methods for estimating the system parameters in the LP model and the FSI model for modelling HEM are effective, with which the dynamic characteristic analysis and design optimization of an HEM can be performed before its prototype development, and this can ensure its low cost and high quality for development.

Shangguan, Wen-Bin; Lu, Zhen-Hua

2004-08-01

155

First Microbial Community Assessment of Borehole Fluids from the Deep Underground Science and Engineering Laboratory (DUSEL)  

NASA Astrophysics Data System (ADS)

Fluid and gas samples were collected from two flowing boreholes at the 4100 (1,250 m) and 4850 ft (1478 m) levels of the former Homestake Gold Mine in Lead, South Dakota. Service- and flood water samples were also collected as comparative benchmarks. With a maximum depth of 8,000 ft, (2,438 m), this mine currently hosts the Sanford Laboratory and is the proposed location for the US Deep Underground Science and Engineering Laboratory (DUSEL). The uncased 4100L hole is a legacy of mining; whereas, the cased 4850 hole was drilled in 2009 in support of large cavity construction. Both were packered or valved to exclude mine air and sampled anaerobically using aseptic technique. Physical measurements, aquatic and dissolved gas chemistry, cell counts, and microbial community assessments (SSU rRNA libraries) were performed on all samples. This study represents the first at Sanford Lab/DUSEL specifically focused on the deep biosphere rather than mine microbiology. Fluids from the two holes differed markedly, with that from 4100L being characterized by NaHCO3 and 4850 by Na2SO4. pH values of 8.2 vs. 7.5, conductivities (?S) of 1790 vs. 7667 and alkalinities (mg/L) of 767 vs. 187 were obtained from 4100L and 4850, respectively. As expected, the deeper 4850L hole had the higher temperature (38 vs. 30 oC). Neither had measureable nitrate, but both had similar dissolved organic C (DOC) concentrations (0.8 vs. 0.9 mg/L). Sulfate was present at 337 vs. 4,470 mg/L in 4100L and 4850L. Major dissolved gases were N2 (91 and 81 vol%), O2 (12 and 16 vol%) and CH4 (0.07 and 3.35 vol%) in 4100L and 4850L. The ?13C of CH4 was -51 and -56.7 permil in 4100L and 4850, respectively. The uncorrected 14C age of DIC was calculated at 25,310 (+/- 220) and 47,700 (+/-3,100) years for the two fluids. Cell counts were 5.9e3 and 2.01e5 in 4100L and 4850. Microbial community structure was diverse in both holes and distinct from that of service water. A large proportion of rRNA library clones were Proteobacteria and closely related to known or expected aerobes including: Thiobacillus, Siderooxidans, Leptothrix, Hydrogenophaga, Pseaudomonas, Methylomonas and Thiothrix, consistent with possible mine water or air contamination. Conversely, Deltaproteobacteria and Firmicute clones, often very closely related to others detected from deep mine or sediment habitats, suggests a deep subsurface component as well. Archaeal clones from 4100L were dominated by a deeply-branching clade with no cultivated representatives; whereas, those from 4850 were mostly related to known methanogens (e.g. Methanolobus). Collectively, this dataset suggests mixed end-member or deeply-sourced water partially overprinted by mine-related artifacts. However, until more is known concerning the deep hydrogeology of this system, it will be difficult to ascertain indigenous from impacted microbial communities in DUSEL.

Moser, D. P.; Anderson, C.; Bang, S.; Jones, T. L.; Boutt, D.; Kieft, T.; Sherwood Lollar, B.; Murdoch, L. C.; Pfiffner, S. M.; Bruckner, J.; Fisher, J. C.; Newburn, J.; Wheatley, A.; Onstott, T. C.

2010-12-01

156

Testing of the Engineering Model Electrical Power Control Unit for the Fluids and Combustion Facility  

NASA Technical Reports Server (NTRS)

The John H. Glenn Research Center at Lewis Field (GRC) in Cleveland, OH and the Sundstrand Corporation in Rockford, IL have designed and developed an Engineering Model (EM) Electrical Power Control Unit (EPCU) for the Fluids Combustion Facility, (FCF) experiments to be flown on the International Space Station (ISS). The EPCU will be used as the power interface to the ISS power distribution system for the FCF's space experiments'test and telemetry hardware. Furthermore. it is proposed to be the common power interface for all experiments. The EPCU is a three kilowatt 12OVdc-to-28Vdc converter utilizing three independent Power Converter Units (PCUs), each rated at 1kWe (36Adc @ 28Vdc) which are paralleled and synchronized. Each converter may be fed from one of two ISS power channels. The 28Vdc loads are connected to the EPCU output via 48 solid-state and current-limiting switches, rated at 4Adc each. These switches may be paralleled to supply any given load up to the 108Adc normal operational limit of the paralleled converters. The EPCU was designed in this manner to maximize allocated-power utilization. to shed loads autonomously, to provide fault tolerance. and to provide a flexible power converter and control module to meet various ISS load demands. Tests of the EPCU in the Power Systems Facility testbed at GRC reveal that the overall converted-power efficiency, is approximately 89% with a nominal-input voltage of 12OVdc and a total load in the range of 4O% to 110% rated 28Vdc load. (The PCUs alone have an efficiency of approximately 94.5%). Furthermore, the EM unit passed all flight-qualification level (and beyond) vibration tests, passed ISS EMI (conducted, radiated. and susceptibility) requirements. successfully operated for extended periods in a thermal/vacuum chamber, was integrated with a proto-flight experiment and passed all stability and functional requirements.

Kimnach, Greg L.; Lebron, Ramon C.; Fox, David A.

1999-01-01

157

MECHANICAL ENGINEERING What is Mechanical  

E-print Network

), the Society of Women Engineers (SWE), and the Society of Manufacturing Engineers (SME). Formula SAE and Baja Engineers (ASME), Pi Tau Sigma National Honor Society, the Society of Automotive Engineers (SAE SAE are international collegiate design competitions where students can design, build, and compete

158

Mechanics of granular-frictional-visco-plastic fluids in civil and mining engineering  

NASA Astrophysics Data System (ADS)

The shear stress generated in mine backfill slurries and fresh concrete contains both velocity gradient dependent and frictional terms, categorised as frictional viscous plastic fluids. This paper discusses application of the developed analytical solution for flow rate as a function of pressure and pressure gradient in discs, pipes and cones for such frictional Bingham-Herschel-Bulkley fluids. This paper discusses application of this continuum fluid model to industrial materials like mine and mineral slurries, backfills and fresh concrete tests.

Alehossein, H.; Qin, Z.

2013-10-01

159

Bronchodilatory and anti-inflammatory effects of ASM-024, a nicotinic receptor ligand, developed for the treatment of asthma.  

PubMed

Conventional asthma and COPD treatments include the use of bronchodilators, mainly ?2-adrenergic agonists, muscarinic receptor antagonists and corticosteroids or leukotriene antagonists as anti-inflammatory agents. These active drugs are administered either separately or given as a fixed-dose combination medication into a single inhaler. ASM-024, a homopiperazinium compound, derived from the structural modification of diphenylmethylpiperazinium (DMPP), has been developed to offer an alternative mechanism of action that could provide symptomatic control through combined anti-inflammatory and bronchodilator properties in a single entity. A dose-dependent inhibition of cellular inflammation in bronchoalveolar lavage fluid was observed in ovalbumin-sensitized mice, subsequently treated for 3 days by nose-only exposure with aerosolized ASM-024 at doses up to 3.8 mg/kg (ED50 = 0.03 mg/kg). The methacholine ED250 values indicated that airway hyperresponsivenness (AHR) to methacholine decreased following ASM-024 administration by inhalation at a dose of 1.5 mg/kg, with a value of 0.145 0.032 mg/kg for ASM 024-treated group as compared to 0.088 0.023 mg/kg for untreated mice. In in vitro isometric studies, ASM-024 elicited dose-dependent relaxation of isolated mouse tracheal, human, and dog bronchial preparations contracted with methacholine and guinea pig tracheas contracted with histamine. ASM-024 showed also a dose and time dependant protective effect on methacholine-induced contraction. Overall, with its combined anti-inflammatory, bronchodilating and bronchoprotective properties, ASM-024 may represent a new class of drugs with a novel pharmacological approach that could prove useful for the chronic maintenance treatment of asthma and, possibly, COPD. PMID:24465890

Assayag, Evelyne Isral; Beaulieu, Marie-Jose; Cormier, Yvon

2014-01-01

160

ASM Conference on Prokaryotic Development  

SciTech Connect

Support was provided by DOE for the 2nd ASM Conference on Prokaryotic Development. The final conference program and abstracts book is attached. The conference presentations are organized around topics that are central to the current research areas in prokaryotic development. The program starts with topics that involve relatively simple models systems and ends with systems that are more complex. The topics are: i) the cell cycle, ii) the cytoskeleton, iii) morphogenesis, iv) developmental transcription, v) signaling, vi) multicellularity, and vii) developmental diversity and symbiosis. The best-studied prokaryotic development model systems will be highlighted at the conference through research presentations by leaders in the field. Many of these systems are also model systems of relevance to the DOE mission including carbon sequestration (Bradyrizobium, Synechococcus), energy production (Anabaena, Rhodobacter) and bioremediation (Caulobacter, Mesorhizobium). In addition, many of the highlighted organisms have important practical applications; the actinomycetes and myxobacteria produce antimicrobials that are of commercial interest. It is certain that the cutting-edge science presented at the conference will be applicable to the large group of bacteria relevant to the DOE mission.

Kaplan, H. B.

2005-07-13

161

932 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 18, NO. 3, JUNE 2013 Model-Based Estimation of Flow Characteristics  

E-print Network

932 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 18, NO. 3, JUNE 2013 Model-Based Estimation- acteristics using an IPMC-beam-based sensor. A dynamic model is developed for the IPMC beam under the flow. INTRODUCTION IN order to improve engine fuel efficiency with reduced ex- haust emissions, advanced sensor

Tan, Xiaobo

162

A method for certification of FRP piping fabricators for ASME B31.3 systems  

SciTech Connect

Cost-effective FRP piping is often the material of choice for transport of corrosive chemicals. Plant Managers and Engineers have great concern about the integrity of FRP piping joints and the safety of these systems. A specification requirement, in the bid documents, that all fabricators be Certified by the FRP piping manufacturer is a method to promote successful fabrication. A method is proposed, which is in accordance with ASME B31.3 Piping Code, to train and certify fabricators.

Andersen, K.D. [Fibercast Co., Sand Springs, OK (United States)

1996-07-01

163

ASME Subsection ISTD recommendations based upon NPAR snubber aging research results  

SciTech Connect

As a result of information obtained during the US Nuclear Regulatory Commission`s (NRC) Nuclear Plant Aging Research(NPAR) Program, Snubber Task research, recommendations are made in the three following areas for the next revision of the American Society of Mechanical Engineers (ASME) Operations and Maintenance (OM) Code, Subsection ISTD: Service-Life Monitoring; Visual Examination Attributes; and Failure Grouping and Corrective Action.

Blahnik, D.E.; Brown, D.P.

1991-12-01

164

Globally Distributed Engineering Teams in Computational Fluid Dynamics and in Product Development  

E-print Network

Fluid Dynamics team shows that successful sequential processing of a problem is possible given technological support by different internet based technologies. Three succeeding studies researched the influence of space and time during idea generation...

Schmidt, Susanne R.

2010-10-12

165

Heat Transfer and Fluid Dynamics Measurements in the Expansion Space of a Stirling Cycle Engine  

NASA Technical Reports Server (NTRS)

The heater (or acceptor) of a Stirling engine, where most of the thermal energy is accepted into the engine by heat transfer, is the hottest part of the engine. Almost as hot is the adjacent expansion space of the engine. In the expansion space, the flow is oscillatory, impinging on a two-dimensional concavely-curved surface. Knowing the heat transfer on the inside surface of the engine head is critical to the engine design for efficiency and reliability. However, the flow in this region is not well understood and support is required to develop the CFD codes needed to design modern Stirling engines of high efficiency and power output. The present project is to experimentally investigate the flow and heat transfer in the heater head region. Flow fields and heat transfer coefficients are measured to characterize the oscillatory flow as well as to supply experimental validation for the CFD Stirling engine design codes. Presented also is a discussion of how these results might be used for heater head and acceptor region design calculations.

Jiang, Nan; Simon, Terrence W.

2006-01-01

166

Graduate Studies Environmental Fluid Mechanics  

E-print Network

Graduate Studies Environmental Fluid Mechanics and Water Resources Engineering GRADUATE COURSESResourcesManagement · IntermediateFluidMechanics · AdvancedFluidMechanics · EnvironmentalFluidMechanics · AdvancedEnvironmental FluidMechanics · FluidMechanicsofOrganisms · OpenChannelHydraulics · SedimentTransport · ComputationalFluidMechanics

Storici, Francesca

167

1 Copyright 2001 by ASME Proceedings of ASME FEDSM'01  

E-print Network

the jet to detach from the wall, move to the opposite sidewall, and re- attach there. A new disturbance. The fluidic oscillator device produces a jet that oscillates in a periodic fashion at frequencies on the order an oscillating jet when supplied with a pressurized fluid [1]. The fluidic oscillator has its roots based

Gregory, James W.

168

1 Copyright 2006 by ASME Proceedings of ASME ICNMM2006  

E-print Network

for electronics packaging. With the development in microelectronics technology, the need for power dissipation has, Rochester Institute of Technology, Rochester, NY 14623. 1 avb9689@rit.edu 2 sgkeme@rit.edu ABSTRACT Recent in microprocessor chip cooling. h m D Luf p 2 2 = (2) The conventional fluid flow theories in microchannel flows

Kandlikar, Satish

169

Viscous Fluids  

NSDL National Science Digital Library

Students are introduced to the similarities and differences in the behaviors of elastic solids and viscous fluids. Several types of fluid behaviors are describedBingham plastic, Newtonian, shear thinning and shear thickeningalong with their respective shear stress vs. rate of shearing strain diagrams. In addition, fluid material properties such as viscosity are introduced, along with the methods that engineers use to determine those physical properties.

Integrated Teaching And Learning Program

170

Fluid Mechanics  

Microsoft Academic Search

This text is intended for the study of fluid mechanics at an intermediate level. The presentation starts with basic concepts, in order to form a sound conceptual structure that can support engineering applications and encourage further learning. The presentation is exact, incorporating both the mathematics involved and the physics needed to understand the various phenomena in fluid mechanics. Where a

David Pnueli; Chaim Gutfinger

1997-01-01

171

Teaching Computer-Aided Design of Fluid Flow and Heat Transfer Engineering Equipment.  

ERIC Educational Resources Information Center

Describes a teaching program for fluid mechanics and heat transfer which contains both computer aided learning (CAL) and computer aided design (CAD) components and argues that the understanding of the physical and numerical modeling taught in the CAL course is essential to the proper implementation of CAD. (Author/CMV)

Gosman, A. D.; And Others

1979-01-01

172

Fluid flow control valve for gas turbine engine fuel control system  

Microsoft Academic Search

A fluid flow control valve includes a body having an inlet and two outlets. A metering control element is slidable in the body to regulate flow through one of the outlets. A combined spill and throttle control element is slidable within the metering element so as simultaneously to control metered flow between the inlet and the one outlet, and spill

1977-01-01

173

Department of Mechanical Engineering The Application of Fluid Power to Meet the Needs of Surgical Robotics  

E-print Network

Robotics Devin R. Berg1, Perry Y. Li1, Arthur G. Erdman1, Tianhong Cui1, and Timothy P. Kinney2 1Department of Minnesota, Minneapolis, MN Introduction Robotic surgery promises to produce continued development of a novel fluid powered robotic surgical platform. Unlike current robotic instruments in which a robot

Wu, Mingshen

174

Computational thermo-fluid dynamics contributions to advanced gas turbine engine design  

NASA Technical Reports Server (NTRS)

The design practices for the gas turbine are traced throughout history with particular emphasis on the calculational or analytical methods. Three principal components of the gas turbine engine will be considered: namely, the compressor, the combustor and the turbine.

Graham, R. W.; Adamczyk, J. J.; Rohlik, H. E.

1984-01-01

175

Engineering Resources  

NSDL National Science Digital Library

The American Society for Mechanical Engineers (ASME) was founded in 1880 by a small group of leading industrialists, and has grown since that time to include over 120,000 members in over 150 countries. This section of their website brings together a clutch of resources for those seeking to learn about career paths in the field. This page is a great way to get young people thinking about joining this noble profession.

176

A new cascade-less engine operated from subsonic to hypersonic conditions: designed by computational fluid dynamics of compressible turbulence with chemical reactions  

NASA Astrophysics Data System (ADS)

By using our computational fluid dynamic models, a new type of single engine capable of operating over a wide range of Mach numbers from subsonic to hypersonic regimes is proposed for airplanes, whereas traditional piston engines, turbojet engines, and scram engines work only under a narrower range of operating conditions. The new engine has no compressors or turbines such as those used in conventional turbojet engines. An important point is its system of super multijets that collide to compress gas for the transonic regime. Computational fluid dynamics is applied to clarify the potential of this engine. The peak pressure at the combustion center is over 2.5 MPa, while that just before ignition is over 1.0 MPa. The maximum power of this engine will be sufficient for actual use. Under the conditions of higher Mach numbers, the main intake passage located in front of the super multijet nozzles, takes in air more. That results in a ram or scramjet engine for supersonic and hypersonic conditions.

Naitoh, Ken; Nakamura, Kazushi; Emoto, Takehiro

2010-12-01

177

COPYRIGHT 2006 by ASME Proceedings of ASME TURBO EXPO 2006  

E-print Network

-11, 2006, Barcelona, Spain GT2006-91011 Influence of Casing Roughness on the Aerodynamic Structure of Tip 4 Turbomachinery Aero-Heat Transfer Laboratory Department of Aerospace Engineering The Pennsylvania State University 223 Hammond Building, University Park, PA 16802 ABSTRACT The aerodynamic influence

Camci, Cengiz

178

COPYRIGHT 2003 by ASME IGTI/ASME TURBO EXPO 2003  

E-print Network

and Levent Kavurmacioglu 3 Turbomachinery Heat Transfer Laboratory Department of Aerospace Engineering with an experimental investigation of aerodynamic characteristics of full and partial-length squealer rims in a turbine aerodynamic tip configuration. The optimal configuration in this cold turbine study is defined as the one

Camci, Cengiz

179

Computational Fluid Dynamics Modeling of a Supersonic Nozzle and Integration into a Variable Cycle Engine Model  

NASA Technical Reports Server (NTRS)

This paper covers the development of an integrated nonlinear dynamic simulation for a variable cycle turbofan engine and nozzle that can be integrated with an overall vehicle Aero-Propulso-Servo-Elastic (APSE) model. A previously developed variable cycle turbofan engine model is used for this study and is enhanced here to include variable guide vanes allowing for operation across the supersonic flight regime. The primary focus of this study is to improve the fidelity of the model's thrust response by replacing the simple choked flow equation convergent-divergent nozzle model with a MacCormack method based quasi-1D model. The dynamic response of the nozzle model using the MacCormack method is verified by comparing it against a model of the nozzle using the conservation element/solution element method. A methodology is also presented for the integration of the MacCormack nozzle model with the variable cycle engine.

Connolly, Joseph W.; Friedlander, David; Kopasakis, George

2014-01-01

180

Computational Fluid Dynamics Modelling of Residual Fuel Oil Combustion in the Context of Marine Diesel Engines  

Microsoft Academic Search

A simplified model is presented for vaporization and combustion of heavy residual based fuel oil in high-pressure sprays, in the context of marine diesel engines. The fuel is considered as a mix of residual base and cutter stock. The model accounts for multiple fuel components as well as limited diffusion rates and thermal decomposition rates within droplets by the use

L Goldsworthy

2006-01-01

181

NOVEL VISUALIZATION AND INTERACTION TECHNIQUES FOR GAINING INSIGHT INTO FLUID DYNAMICS IN INTERNAL COMBUSTION ENGINES  

Microsoft Academic Search

SUMMARY Future emission regulations and increased customer demands require the utilization of all available tools in developing engines of the next generation. 3D CFD simulation is one of these tools (1). Due to well-advanced and well- developed simulation technology and improved computing power, the generated pack of data becomes complex and difficult to evaluate. In principle, technical problems can be

Stephan Schmidt; Oliver Schgl; Roland Kirchberger; Helmut Doleisch; Philipp Muigg; Helwig Hauser; Markus Grabner; Alexander Bornik; Dieter Schmalstieg

182

Fluid dynamic analysis of the space shuttle main engine high pressure oxidizer turbopump slinger seal  

NASA Technical Reports Server (NTRS)

The details of the flow on the bladed side of a centrifugal type dynamic shaft seal utilized to contain liquid oxygen in the Space Shuttle Main Engine high pressure oxidizer turbopump were clarified. The governing equations are solved to predict the pressure and temperature gradients and to aid in investigating the nature of the liquid-vapor interface. Recommendations for design improvements are discussed.

Voss, J. S.

1980-01-01

183

The fluid dynamics of a miniature dilution tunnel for internal-combustion engine aerosol measurement  

SciTech Connect

This paper investigates the fluid dynamics of a particular mini-dilution tunnel using LDV, flow visualization, a tracer sample technique and CFD. The mini-dilution tunnel studied had a 3.175 mm inside diameter tube discharging on the centerline of the tunnel where the diameter increases in a single step to 7.62 cm. The large diameter portion of the tunnel was 75 cm long. Most of the testing was performed at a flow rate of 15 l/min. The experimental investigation indicates that the flow field in the particular dilution tunnel tested has a persistent jet throughout its length, and this confined jet creates eddy recirculation zones which may cause the temperature and dilution histories of particles trapped in these eddies to be significantly different than particles which remain in the jet until extracted by the sample probe. Similarly, the location of the sample probe could also affect measured size distribution profiles, particularly if it were moved in or out of the path of the persistent jet. In addition to the simple tunnel geometry with a single abrupt expansion, a conical diffuser and a perforated plate were separately tested to investigate their effects on the tunnel fluid dynamics. The particular diffuser tested appeared to cause the jet to stall and therefore led to an even more unpredictable path for the fluid within. Limited testing with the perforated plate indicated that it increased the jet deceleration and laminarization, and therefore could lead to a more predictable flow path for aerosol sampled from the tunnel. (author)

Kommer, Eric M. [Department of Mechanical Engineering, University of Maryland, College Park, MD (United States); Puzinauskas, Paulius V. [Department of Mechanical Engineering, University of Alabama, P.O. Box 870276, Tuscaloosa, AL 35487 (United States); Buckley, Steven G. [Department of Mechanical and Aerospace Engineering, University of California, San Diego, CA (United States)

2007-11-15

184

Sructure and dynamics of fluids in micropous and mesoporous earth and engineered materials  

SciTech Connect

The behavior of liquids in confined geometries (pores, fractures) typically differs, due to the effects of large internal surfaces and geometri-cal confinement, from their bulk behavior in many ways. Phase transitions (i.e., freezing and capillary condensation), sorption and wetting, and dy-namical properties, including diffusion and relaxation, may be modified, with the strongest changes observed for pores ranging in size from <2 nm to 50 nm the micro- and mesoporous regimes. Important factors influ-encing the structure and dynamics of confined liquids include the average pore size and pore size distribution, the degree of pore interconnection, and the character of the liquid-surface interaction. While confinement of liq-uids in hydrophobic matrices, such as carbon nanotubes, or near the sur-faces of mixed character, such as many proteins, has also been an area of rapidly growing interest, the confining matrices of interest to earth and ma-terials sciences usually contain oxide structural units and thus are hydro-philic. The pore size distribution and the degree of porosity and inter-connection vary greatly amongst porous matrices. Vycor, xerogels, aerogels, and rocks possess irregular porous structures, whereas mesopor-ous silicas (e.g., SBA-15, MCM-41, MCM-48), zeolites, and layered sys-tems, for instance clays, have high degrees of internal order. The pore type and size may be tailored by means of adjusting the synthesis regimen. In clays, the interlayer distance may depend on the level of hydration. Al-though studied less frequently, matrices such as artificial opals and chry-sotile asbestos represent other interesting examples of ordered porous structures. The properties of neutrons make them an ideal probe for com-paring the properties of bulk fluids with those in confined geometries. In this chapter, we provide a brief review of research performed on liquids confined in materials of interest to the earth and material sciences (silicas, aluminas, zeolites, clays, rocks, etc.), emphasizing those neutron scattering techniques which assess both structural modification and dynamical behav-ior. Quantitative understanding of the complex solid-fluid interactions under different thermodynamic situations will impact both the design of bet-ter substrates for technological applications (e.g., chromatography, fluid capture, storage and release, and heterogeneous catalysis) as well as our fundamental understanding of processes encountered in the environment (i.e., fluid and waste mitigation, carbon sequestration, etc.).

Cole, David R [ORNL; Mamontov, Eugene [ORNL; Rother, Gernot [ORNL

2009-01-01

185

A Design-Oriented Approach to the Integration of Thermodynamics, Fluid Mechanics, and Heat Transfer in the Undergraduate Mechanical Engineering Curriculum.  

ERIC Educational Resources Information Center

This paper describes two parallel efforts that attempt to implement a new approach to the teaching of thermal fluids engineering. In one setting, at the Massachusetts Institute of Technology (MIT), the subject matter is integrated into a single year-long subject at the introductory level. In the second setting, at Victoria (British Columbia,

Whale, MacMurray D.; Cravalho, Ernest G.

186

User Reactions to Search Engines Logos: Investigating Brand Knowledge of web Search Engines  

E-print Network

User Reactions to Search Engines Logos: Investigating Brand Knowledge of web Search Engines Bernard 16802-1307 asm6@psu.edu ABSTRACT In this work, we investigate consumer reaction to web search engine logos. Our research is motivated by a small number of search engines dominating a market in which

Jansen, James

187

Fluid dynamic modeling of a free piston engine with labyrinth seals  

NASA Astrophysics Data System (ADS)

Preliminary design and simulation of a free piston engine suitable for small-scale energy production in distributed energy systems is presented in this paper. The properties, particularly the properties of gas seals of the engine are simulated using a simulation program developed for this case, and the results are utilized in preliminary main design parameter selection. The engine simulation program was developed by combining and modifying the source codes of the simulation and calculation programs obtained from Helsinki University of Technology, Tampere University of Technology, and Lappeenranta University of Technology. Because of the contact-free labyrinth seal used in the piston, the efficiency of the motor is lower than the efficiency of a conventional motor with oil lubricated piston rings. On the other hand, the lack of bearing losses, and the lack of losses associated with a crankshaft system and a gearbox, as well as the lack of lubrication oil expenses, compensates this effect. As a net result, this new motor would perform slightly better than the conventional one. Being completely oil-free, it is very environmentally friendly, and its exhaust gases are completely free of oil residuals which are causing problems in normal gas motors.

Larjola, Jaakko; Honkatukia, Juha; Sallinen, Petri; Backman, Jari

2010-04-01

188

Mechanical & Aerospace Engineering Department of  

E-print Network

Mechanical & Aerospace Engineering Department of Summer 2010 www.mae.ufl.edu #12;2 Chair's Column held our Gator Mechanical & Aerospace Engineering (MAE) get together reception at the annual ASME aerospace program and in the emerging areas of energy, nano and biotechnology. In addition, the College

Roy, Subrata

189

1 Copyright 2006 by ASME Proceedings of GT2006  

E-print Network

1 Copyright © 2006 by ASME Proceedings of GT2006 ASME Turbo Expo: Power for Land, Sea and Air May 8 the aircraft is at cruise altitude. The sand-air mixture enters the compressor at moderate concentrations] and also by Batcho et al. [5]. The combustor bypass air supplies coolant to blades and vanes

Thole, Karen A.

190

PROCEEDINGS OF THE ASME/EPA (AMERICAN SOCIETY OF MECHANICAL ENGINEERS/ENVIRONMENTAL PROTECTION AGENCY) HAZARDOUS WASTE INCINERATION CONFERENCE HELD AT WILLIAMSBURG, VIRGINIA ON MAY 27-29, 1981  

EPA Science Inventory

This report is a proceedings of a 3-day conference among industry, government, professional engineers and scientists, and the general public concerning hazardous waste incineration which came at a time when EPA interim final rule incineration regulations had just been made public...

191

2014 GRADUATE STUDIES ENVIRONMENTAL FLUID MECHANICS  

E-print Network

2014 GRADUATE STUDIES ENVIRONMENTAL FLUID MECHANICS AND WATER RESOURCES ENGINEERING RESEARCH AREAS SELECTED COURSES FACILITIES The Environmental Fluid Mechanics and Water Resources program at the Georgia; and develop new technologies and tools that benefit engineering practice in fluid mechanics, hydraulics

Wang, Yuhang

192

FacultyofAerospaceEngineering Aerospace Masterweeks  

E-print Network

FacultyofAerospaceEngineering Aerospace Masterweeks Aerospace Engineering & European Wind Energy Faculty of Aerospace Engineering Kluyverweg 1 2629 HS Delft T +31 (0)15 27 87192 E voorlichting 13: Aerospace Structures and Materials 12.45 ­ 13.45 General presentation ASM and Q&A LR-A 17.30 ­ 20

Lindken, Ralph

193

Magnetic Fluids  

NSDL National Science Digital Library

In this fun, engaging activity, students are introduced to a unique type of fluidferrofluidswhose shape can be influenced by magnetic fields! Students act as materials engineers and create their own ferrofluids. They are challenged to make magnetic ink out of ferrofluids and test their creations to see if they work. Concurrently, they learn more about magnetism, surfactants and nanotechnology. As they observe fluid properties as a standalone-fluid and under an imposed magnetic field, they come to understand the components of ferrofluids and their functionality.

National Science Foundation GK-12 and Research Experience for Teachers (RET) Programs,

194

Application of the ASME code in the design of the GA-4 and GA-9 casks  

SciTech Connect

General Atomics (GA) is developing two spent fuel shipping casks for transport by legal weight truck (LWT). The casks are designed to the loading, environmental conditions and safety requirements defined in Title 10 of the Code of Federal Regulations, Part 71 (10CFR71). To ensure that all components of the cask meet the 10CFR71 rules, GA established structural design criteria for each component based on NRC Regulatory Guides and the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code). This paper discusses the criteria used for different cask components, how they were applied and the conservatism and safety margins built into the criteria and assumption.

Mings, W.J. [USDOE Idaho Field Office, Idaho Falls, ID (United States); Koploy, M.A. [General Atomics, San Diego, CA (United States)

1992-08-01

195

Application of the ASME code in the design of the GA-4 and GA-9 casks  

SciTech Connect

General Atomics (GA) is developing two spent fuel shipping casks for transport by legal weight truck (LWT). The casks are designed to the loading, environmental conditions and safety requirements defined in Title 10 of the Code of Federal Regulations, Part 71 (10CFR71). To ensure that all components of the cask meet the 10CFR71 rules, GA established structural design criteria for each component based on NRC Regulatory Guides and the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code). This paper discusses the criteria used for different cask components, how they were applied and the conservatism and safety margins built into the criteria and assumption.

Mings, W.J. (USDOE Idaho Field Office, Idaho Falls, ID (United States)); Koploy, M.A. (General Atomics, San Diego, CA (United States))

1992-01-01

196

Computational fluid dynamics analysis of Space Shuttle main engine multiple plume flows at high-altitude flight conditions  

NASA Technical Reports Server (NTRS)

Computational fluid dynamics (CFD) analysis is providing verification of Space Shuttle flight performance details and is being applied to Space Shuttle Main Engine Multiple plume interaction flow field definition. Advancements in real-gas CFD methodology that are described have allowed definition of exhaust plume flow details at Mach 3.5 and 107,000 ft. The specific objective includes the estimate of flow properties at oblique shocks between plumes and plume recirculation into the Space Shuttle Orbiter base so that base heating and base pressure can be modeled accurately. The approach utilizes the Rockwell USA Real Gas 3-D Navier-Stokes (USARG3D) Code for the analysis. The code has multi-zonal capability to detail the geometry of the plumes based region and utilizes finite-rate chemistry to compute the plume expansion angle and relevant flow properties at altitude correctly. Through an improved definition of the base recirculation flow properties, heating, and aerodynamic design environments of the Space Shuttle Vehicle can be further updated.

Dougherty, N. S.; Holt, J. B.; Liu, B. L.; Johnson, S. L.

1992-01-01

197

14 CFR 25.1182 - Nacelle areas behind firewalls, and engine pod attaching structures containing flammable fluid...  

Code of Federal Regulations, 2010 CFR

14 Aeronautics and Space 1...behind firewalls, and engine pod attaching structures containing...behind firewalls, and engine pod attaching structures containing...and each portion of any engine pod attaching structure...

2010-01-01

198

1 Copyright 2013 by ASME Proceedings of the ASME 2013 International Manufacturing Science and Engineering Conference  

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Ti) is receiving increasing use, especially in implantable medical devices. NiTi has good biocompatibility, which is of great interest for implantable biomedical applications. Formation of brittle intermetallic phases will focus on the joining of dissimilar metals. Due to some of its unique properties, nickel titanium (Ni

Yao, Y. Lawrence

199

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Mechanical Engineering Congress & Exposition  

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on renewable and sustainable energy sources, such as solar energy. In solar reactors and solar power plants efficiency and operating temperature of the system [2]. Particular applications involving solar energy heat transfer processes, including absorption of renewable and sustainable solar energy in a solar

Guo, Zhixiong "James"

200

1 Copyright 2014 by ASME Proceedings of the ASME 2014 International Design Engineering Technical Conference &  

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electronic control and safety-systems, such as Electronic Stability Program, Anti-lock Brake Systems in reliability and safety due to incorporation of intelligent systems such as Anti-lock Braking System (ABS with the INS sensing. This enable to use low-cost and high rate INS-based measurements while noise effects

Krovi, Venkat

201

1 Copyright 2010 by ASME Proceedings of the ASME International Mechanical Engineering Congress & Exposition  

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resistance (TCR), an interfacial phenomenon which occurs due to imperfect contact at GDL- bipolar plate resistance between the GDL and adjacent surfaces/layers. In the present study, a guarded-hot-plate apparatus

Bahrami, Majid

202

1 Copyright 2010 by ASME Proceedings of the ASME 2010 International Design Engineering Technical Conferences &  

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oil dependency and global warming within the U.S. transportation sector [2]. 1 We focus here on global, Quebec, Canada DETC2010/DAC-28064 A MINLP MODEL FOR GLOBAL OPTIMIZATION OF PLUG-IN HYBRID VEHICLE DESIGN electric vehicles (PHEVs) have potential to reduce greenhouse gas (GHG) emissions in the U.S. light

Michalek, Jeremy J.

203

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Mechanical Engineering Congress & Exposition  

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(CRI). For verification in a drilling operation application, this index is found to positively track dimensional values, indirect measurements include a host of techniques including: sonic and ultrasonic. Further, we establish tracking between these current measurements with corresponding force measurements

204

DE-Vol. 82, Volume 1, ASME 1995 Proceedings of the ASME Design Engineering Technical Conferences  

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dimensions of the components, and the assembly functions are not highly nonlinear. Sample size is shown, accuracy is related to the sample size, although the relationship of sample size and accuracy has not been the two methods are compared. A Monte Carlo simulation with a very large sample size is chosen

205

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generation with a via point. These new polynomials use a single function rather than two polynomial functions the widespread, use of discontinuous acceleration functions in joint-space trajectory generation methods, which), Sciavicco and Siciliano (1996), and Spong et al. (2005). A third-order polynomial approach is suggested

Williams II, Robert L.

206

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Manufacturing Science and Engineering Conferences  

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) 740-1120, Email: yongchen@usc.edu KEYWORDS Additive Manufacturing, Solid Freeform Fabrication a newly developed additive manufacturing (AM) process named CNC accumulation. In such an AM process) Ultrasound transducer arrays(a) Ultrasound machine (d) Ultrasound transducer horns (Sherrit, et al., 2008

Chen, Yong

207

1 Copyright 2012 by ASME Proceedings of the ASME 2012 International Manufacturing Science and Engineering Conferences  

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within minutes instead of hours that are typically required. KEYWORDS Additive manufacturing, rapid-based Additive Manufacturing (AM) processes such as Stereolithography Apparatus (SLA) and Selective Laser on developing the roadmap for AM [1], the development of higher throughput AM machines was identified

Chen, Yong

208

Copyright 2009 by ASME Proceedings of the ASME 2009 International Design Engineering Technical Conferences & Computers and  

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of this prediction algorithm does not need statistical data or rely on an underlying cinematic human model with pre algorithms only require data sampled before an occlusion. Other algorithms require statistical data combination of both, a prediction method is suggested and realized. The paper presents linear and circular

209

1 Copyright 2009 by ASME Proceedings of the ASME 2009 International Design Engineering Technical Conferences &  

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an innovative structure, such as a deployable tensegrity structure, and suppose that while doing so, we forces in a tensegrity structure thus determining which element would be a strut and which a cable. This paper deals with a situation in which a novel type of structure, adjustable, deployable tensegrity

Shai, Offer

210

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Design Engineering Technical Conferences &  

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DETC2011-47708 A MODEL OF CATERPILLAR LOCOMOTION BASED ON ASSUR TENSEGRITY STRUCTURES Orki Omer School aiming at building a robot composed of Assur tensegrity structures, which mimics caterpillar locomotion. In our model, each caterpillar segment is represented by a 2D tensegrity triad consisting of two bars

Shai, Offer

211

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SUBSYSTEMS Leng-Feng Lee Graduate Student Mechanical & Aerospace Eng. SUNY at Buffalo 318 Jarvis Hall, Buffalo NY 14260 E-mail: llee3 @buffalo.edu Web: www.eng.buffalo.edu/~llee3 Xiaobo Zhou Graduate Student Mechanical & Aerospace Eng. SUNY at Buffalo 318 Jarvis Hall, Buffalo NY 14260 E-mail: xzhou9@buffalo

Krovi, Venkat

212

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. & Aero. Engg. SUNY at Buffalo Buffalo, NY 14260 seungjun@buffalo.edu Xiaobo Zhou Mech. & Aero. Engg. SUNY at Buffalo Buffalo, NY 14260 xzhou9@buffalo.edu Daniel K. Ramsey Exer. & Nutri. Sci. SUNY at Buffalo Buffalo, NY 14260 dkramsey@buffalo.edu Venkat N. Krovi Mech. & Aero. Engg. SUNY at Buffalo Buffalo, NY 14260

Krovi, Venkat

213

1 Copyright 2010 by ASME Proceedings of the ASME 2010 International Design Engineering Technical Conferences &  

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ABET outcomes for our program. The course focuses on the kinematics and dynamics analysis of planar 1 and learning of mechanism kinematics and dynamics, robot kinematics, dynamics, and control-related courses. The old, well-developed topic of kinematics and dynamics analysis of mechanisms is taught largely

Williams II, Robert L.

214

1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Design Engineering Technical Conferences &  

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-driven robotic arm, implement kinematics and dynamics analysis, present different cable-driven designs and evaluate their merits and drawbacks. Since this is a redundant mechanism, kinematics optimization is used to avoid joint limits, singularities and obstacles. Cable kinematics analysis studies the relationships

Williams II, Robert L.

215

The First ASME Code Stamped Cryomodule at SNS  

SciTech Connect

The first spare cryomodule for the Spallation Neutron Source (SNS) has been designed, fabricated, and tested by SNS personnel. The approach to design for this cryomodule was to hold critical design features identical to the original design such as bayonet positions, coupler positions, cold mass assembly, and overall footprint. However, this is the first SNS cryomodule that meets the pressure requirements put forth in the 10 CFR 851: Worker Safety and Health Program. The most significant difference is that Section VIII of the ASME Boiler and Pressure Vessel Code was applied to the vacuum vessel of this cryomodule. Applying the pressure code to the helium vessels within the cryomodule was considered. However, it was determined to be schedule prohibitive because it required a code case for materials that are not currently covered by the code. Good engineering practice was applied to the internal components to verify the quality and integrity of the entire cryomodule. The design of the cryomodule, fabrication effort, and cryogenic test results will be reported in this paper.

Howell, M P; Crofford, M T; Douglas, D L; Kim, S -H; Steward, S T; Strong, W H; Afanador, R; Hannah, B S; Saunders, J

2012-07-01

216

Field Observations of Fluid Transport in a Complex Heterogeneous Vadose Zone at the Idaho National Engineering and Environmental Laboratory (INEEL)  

NASA Astrophysics Data System (ADS)

Predicting fluid and contaminant transport in the vadose zone near the Idaho Nuclear Technology and Engineering Center (INTEC) at the INEEL has been problematic due to the complex geology underlying the site. In an attempt to better understand the controlling mechanism of subsurface fluid transport, a system of monitoring instruments were installed in boreholes around the perimeter of newly constructed percolation ponds, consisting of 2 cells each approximately 160,000 ft2 in area. The instrumented region surrounding the ponds has been designated as the Vadose Zone Research Park (VZRP). Continuous discharge to the south cell began in October 2002 at an average flux rate of 1.5 million gallons per day and continued until July 2003 at which time the discharge was switched to the north cell. Hydraulic data were collected nearly continuously, monitoring hydraulic responses to discharge events to both cells. Discharge to the south cell resulted in rapid vertical percolation until reaching the surficial gravel/basalt interface (at about 60 ft below ground surface) at which time rapid lateral transport was observed in a southern direction. A near steady state of water levels was reached during this 10-month period. Switching discharge location only 100 feet to the north cell drastically altered hydrological conditions and flow paths within the subsurface. Recharge was observed in several new locations, while some locations ceased receiving water from the ponds entirely. Other locations temporarily drained, then received "new water" from alternate flow paths a few days later. Prior to switching discharge locations, 3 wells were installed in the north cell at depths of 7 ft, 12 ft, and 19 ft below ground surface. The wells were instrumented with electrical conductivity probes to monitor discharge from the INTEC facility, which receives a high conductivity spike every 12 hours from water softener regeneration. Field observations show that water reached the 7 ft well within a couple hours after the switch, while the other 2 wells remain dry even after one month. Based on these data, it appears that discharge to the north cell percolates vertically to a depth of approximately 10 ft before reaching a low permeability zone, which diverts flow laterally in a northern direction. Field observations of hydrological data indicate that initial water arrival times and locations appear to be controlled by low permeability zones and fast pathways. Arrival progression was neither vertically nor laterally sequential. Importantly, field observations indicate that minor transients in discharge flux and/or location resulted in extreme changes in fluid transport behavior. Based on these observations, it is apparent that our original steady-state conceptual model needs to be modified to incorporate not only lithologic complexities, but also temporal changes in discharge location and flux. Continued field monitoring combined with ongoing tracer testing at the VZRP is aimed at providing the information needed to improve predictive models designed specifically for complex heterogeneous subsurface environments.

Baker, K.; Hull, L.; Mattson, E.; McLing, T.

2003-12-01

217

Start Up Research Effort in Fluid Mechanics. Advanced Methods for Acoustic and Thrust Benefits for Aircraft Engine Nozzle  

NASA Technical Reports Server (NTRS)

In accordance with the project plan for the report period in the proposal titled above, HU and FML teams investigated two sets of concepts for reduction of noise and improvement in efficiency for jet exhaust nozzles of aircraft engines and screws for mixers, fans, propellers and boats. The main achievements in the report period are: (a) Publication of the paper in the AIAA Journal, which described our concepts and some results. (b) The Award in the Civil Research and Development Foundation (CRDF) competition. This 2 year grant for Hampton University (HU) and Central AeroHydrodynamic Institute (TSAGI, Moscow, Russia) supports the research implementation under the current NASA FAR grant. (c) Selection for funding by NASA HQ review panel of the Partnership Awards Concept Paper. This two year grant also will support our current FAR grant. (d) Publication of a Mobius Strip concept in NASA Technical Briefs, June, 1996, and a great interest of many industrial companies in this invention. Successful experimental results with the Mobius shaped screw for mixers, which save more than 30% of the electric power by comparison with the standard screws. Creation of the scientific-popular video-film which can be used for commercial and educational purposes. (e) Organization work, joint meetings and discussions of the NASA LARC JNL Team and HU professors and administration for the solution of actual problems and effective work of the Fluid Mechanics Laboratory at Hampton University. In this report the main designs are enumerated. It also contains for both concept sets: (1) the statement of the problem for each design, some results, publications, inventions, patents, our vision for continuation of this research, and (2) present and expected problems in the future.

White, Samuel G.; Gilinsky, Mikhail M.

1997-01-01

218

Fluid Power Technician  

ERIC Educational Resources Information Center

Fluid power technicians, sometimes called hydraulic and pneumatic technicians, work with equipment that utilizes the pressure of a liquid or gas in a closed container to transmit, multiply, or control power. Working under the supervision of an engineer or engineering staff, they assemble, install, maintain, and test fluid power equipment.

Moore, Pam

2008-01-01

219

An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept: LIPA  

NASA Astrophysics Data System (ADS)

Optical measurements on an axisymmetrical quartz component engine research model were made to evaluate the flow field encountered during induction. The measurement technique is LIPA (Laser Induced Photochemical Anemometry), a non-intrusive velocimetry concept that provides an investigator of fluid flow with a tool to attain planar information about three-dimensional velocity and vorticity vectors in a single measurement step. The goal of this investigation is to further develop this measurement technique and apply it to study the induction stroke of a water analog model of a four-stroke internal combustion engine. The research conducted in the water analog model is a fundamental scientific inquiry into the flow fields that develop in the induction stroke of an engine at idling engine speeds. As this is the first investigation of its kind using LIPA technique, our goal has been to quantify, in a preliminary manner, the flow field features that develop during the intake stroke. In the process a more comprehensive understanding of the flow field features was developed, and tied to the quantification. The study evaluated the flow field of the intake stroke by estimating fields of velocity and vorticity. On the basis of these data, information about fluid dynamics during induction at engine speeds of 10, 20, and 30 RPM (corresponding to 170, 340, and 510 RPM respectively, when air is the flowing medium) for three different valve lifts was obtained. The overall development of the flow field, its energy content (kinetic, fluctuation) for the different settings of the engine parameters, vorticity information, and cyclic variations have been quantified. These have been discussed in terms of mixing performance.

Stier, Bernd; Falco, R. E.

1994-08-01

220

An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept: LIPA  

NASA Technical Reports Server (NTRS)

Optical measurements on an axisymmetrical quartz component engine research model were made to evaluate the flow field encountered during induction. The measurement technique is LIPA (Laser Induced Photochemical Anemometry), a non-intrusive velocimetry concept that provides an investigator of fluid flow with a tool to attain planar information about three-dimensional velocity and vorticity vectors in a single measurement step. The goal of this investigation is to further develop this measurement technique and apply it to study the induction stroke of a water analog model of a four-stroke internal combustion engine. The research conducted in the water analog model is a fundamental scientific inquiry into the flow fields that develop in the induction stroke of an engine at idling engine speeds. As this is the first investigation of its kind using LIPA technique, our goal has been to quantify, in a preliminary manner, the flow field features that develop during the intake stroke. In the process a more comprehensive understanding of the flow field features was developed, and tied to the quantification. The study evaluated the flow field of the intake stroke by estimating fields of velocity and vorticity. On the basis of these data, information about fluid dynamics during induction at engine speeds of 10, 20, and 30 RPM (corresponding to 170, 340, and 510 RPM respectively, when air is the flowing medium) for three different valve lifts was obtained. The overall development of the flow field, its energy content (kinetic, fluctuation) for the different settings of the engine parameters, vorticity information, and cyclic variations have been quantified. These have been discussed in terms of mixing performance.

Stier, Bernd; Falco, R. E.

1994-01-01

221

M. P. Mignolet, C. Soize, K. Kim, D-H Lee, Nonparametric stochastic modeling of structural dynamic and aeroelastic systems: formulation and novel extensions, 9th Non-deterministic Approaches (NDA) Conference and 48th AIAA/ASME/ASCE/AHS/ASC Structures, Str  

E-print Network

and 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials (SDM) Conference, Waikiki Engineering, Associate Fellow, AIAA. Professor, Laboratoire de Mécanique Postdoctoral Fellow, Department of Mechanical and Aerospace Engineering. ** R&D Engineering Specialist, AIAA Member This approach, which has

Boyer, Edmond

222

GC-ASM: synergistic integration of active shape modeling and graph-cut methods  

NASA Astrophysics Data System (ADS)

Image segmentation methods may be classified into two categories: purely image based and model based. Each of these two classes has its own advantages and disadvantages. In this paper, we propose a novel synergistic combination of the image based graph-cut (GC) methods with the model based ASM methods to arrive at the GC-ASM method. GC-ASM effectively combines the rich statistical shape information embodied in ASM with the globally optimal delineation capability of the GC method. We propose a new GC cost function, which effectively integrates the specific image information with the ASM shape information. The ASM results are fully utilized to help GC in several ways: (1) For automatically selecting seeds to do GC segmentation, thus helping GC with object recognition; (2) For refining the parameters of the GC algorithm from the ASM result; (3) For bringing object shape information into the GC cost computation. (4) In turn, for using the cost of GC result to improve the ASM's object recognition process. The proposed methods are implemented to operate on 2D images and tested on a clinical abdominal CT data set. The results show: (1) GC-ASM becomes largely independent of initialization. (2) The number of landmarks can be reduced by a factor of 3 in GC-ASM over that in ASM. (3) The accuracy of segmentation via GC-ASM is considerably better than that of ASM.

Chen, Xinjian; Udupa, Jayaram K.; Torigian, Drew A.; Alavi, Abass

2009-02-01

223

New technology in large bore engines  

SciTech Connect

This book contains papers presented at the 12th Annual Fall Technical Conference of the ASME International Combustion Engine Division. Included are the following papers. Gaseous and particulate emissions from diesel locomotive engines, an integrated model of ring pack performance, optical alignment of reciprocating compressors.

Chrisman, B. (Cooper Industries, Ajax-Superior Division (US))

1990-01-01

224

Tensioned metastable fluids and nanoscale interactions with external stimuliTheoretical-cum-experimental assessments and nuclear engineering applications  

Microsoft Academic Search

The field of tensioned (sub-zero pressure) metastability of organic and inorganic fluids and their responses to external stimuli is under study at Purdue University. Unique properties related to energy storage and sub-nano scale response to external stimuli have been found that give rise to the capability for causing localized supercritical states leading to fluid boiling by visible light photons and

Rusi Taleyarkhan; J. Lapinskas; Y. Xu

2008-01-01

225

14 CFR 330.31 - What data must air carriers submit concerning ASMs or RTMs?  

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false What data must air carriers submit concerning ASMs or RTMs...REGULATIONS PROCEDURES FOR COMPENSATION OF AIR CARRIERS Application Procedures 330.31 What data must air carriers submit concerning ASMs or...

2010-01-01

226

Nickel-iron-chromium alloy seamless pipe and tubing (ASME SB-407 with additional requirements)  

SciTech Connect

This standard covers nickel-iron-chromium alloy seamless pipe and tubing for nuclear and associated applications. Material shall conform to the requirements of ASME SB-407; to the requirements of the ASME Boiler and Pressure Vessel Code (ASME Code), Section III, Article NB-2000; and to the additional requirements of this standard.

Not Available

1980-05-01

227

Fluid Mechanics  

NASA Astrophysics Data System (ADS)

This text is intended for the study of fluid mechanics at an intermediate level. The presentation starts with basic concepts, in order to form a sound conceptual structure that can support engineering applications and encourage further learning. The presentation is exact, incorporating both the mathematics involved and the physics needed to understand the various phenomena in fluid mechanics. Where a didactical choice must be made between the two, the physics prevails. Throughout the book the authors have tried to reach a balance between exact presentation, intuitive grasp of new ideas, and creative applications of concepts. This approach is reflected in the examples presented in the text and in the exercises given at the end of each chapter. Subjects treated are hydrostatics, viscous flow, similitude and order of magnitude, creeping flow, potential flow, boundary layer flow, turbulent flow, compressible flow, and non-Newtonian flows. This book is ideal for advanced undergraduate students in mechanical, chemical, aerospace, and civil engineering. Solutions manual available.

Pnueli, David; Gutfinger, Chaim

1997-01-01

228

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 54, NO. 2, FEBRUARY 2007 291 Cerebrospinal Fluid Flow in the Normal and  

E-print Network

. This paper presents a detailed analysis of pulsatile CSF flow and pressure dynamics in a normal and pathological conditions of communicating hydrocephalus. This paper predicts small transmantle pressure, computational fluid dy- namics, human brain, hydrocephalus, intracranial pressure, reconstruction tools. I

Linninger, Andreas A.

229

Fluid Mechanics and Homeland Security  

E-print Network

Fluid Mechanics and Homeland Security Gary S. Settles Mechanical and Nuclear Engineering Department. 2006. 38:87­110 The Annual Review of Fluid Mechanics is online at fluid.annualreviews.org doi: 10 security involves many applications of fluid mechanics and offers many opportunities for research

Settles, Gary S.

230

Proceedings of IMECE'06 2006 ASME International Mechanical Engineering Congress  

E-print Network

dimensionality increases the local density of states near the Fermi level, which increases the Seebeck S is the Seebeck coefficient, is the electrical conductivity and is the thermal conductivity. Research has been focused towards developing materials that have a high Seebeck coefficient as well as structures

Walker, D. Greg

231

Proceedings of IMECE04 2004 ASME International Mechanical Engineering Congress  

E-print Network

efficiency, the cooling water is kept at a high temperature, (inlet coolant temperature is 290-300 o C. The high temperature cooling water in which the fuel assemblies are immersed, promotes uniform corrosion uprates, which can involve increases in the coolant outlet temperatures and can cause boiling in the

Motta, Arthur T.

232

Proceedings of DETC 2005 2005 ASME Design Engineering Technical Conferences  

E-print Network

the software products MAC- SYMA and AUTO. Our motivation for studying this system comes from the presence by affecting the concentration of a substance (melatonin) in the bloodstream. Here the non-oscillatory bath

Rand, Richard H.

233

Proceedings of 2002 ASME IMECE: International Mechanical Engineering Conference & Exhibition  

E-print Network

design and manufacturing such as integrated design and manufacture and just in time fabrication depend on interaction with and among component supply companies which most often use very diverse technologies that form a sufficient set of queries to allow compositional modeling methods; the global query ontology

Radcliffe, Clark J.

234

Proceedings of 2001 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

(Yamada, 1995), laser tissue welding (Poppas et al., 2000) and ablation (Pettit and Sauerbrey, 1993. Previously, researchers in the biomedical field broadly used the transient diffusion equation of angle-independent photon flux (Flock et al., 1989; Yamada, 1995). Experiments have shown that such diffusion based

Guo, Zhixiong "James"

235

Proceedings of the ASME/JSME Joint Thermal Engineering Conference  

E-print Network

of coolant flow rate, pin-fin density and pin- fin height. A comparison with a similar jet-driven impingement, U. On the other hand, an increase in fin density results in the opposite effect, U decreases while

Wirtz, Richard A.

236

Proceedings of IMECE 2004 2004 ASME International Mechanical Engineering Congress  

E-print Network

], and insulators. The insulator packed beds are often immersed in a gas at reduced pressure. The thermal-19, 2004, Anaheim, California, USA DRAFT IMECE2004-60129 COMPACT ANALYTICAL MODELS FOR EFFECTIVE THERMAL, Canada N2L 3G1 Abstract New compact analytical models for predicting the effec- tive thermal conductivity

Bahrami, Majid

237

Proceedings of DETC 2000 2000 ASME Design Engineering Technical Conference  

E-print Network

- Baltimore, Maryland DETC2000/DFM-14002 DESIGN FOR PRODUCTION: A TOOL FOR REDUCING MANUFACTURING CYCLE TIME support tool that can help a product development team reduce manu- facturing cycle time during product the manufacturing cycle times. Perform- ing these tasks early in the product development process can reduce product

Herrmann, Jeffrey W.

238

Proceedings of DETC'01 2001 ASME Design Engineering Technical Conferences  

E-print Network

PROBLEMS Alexander V. Pesterev Institute for Systems Analysis Russian Academy of Sciences Moscow, 117312 applications related, for example, to the analysis and design of highway and railway bridges, cable-railways

Tsao, Tsu-Chin

239

Proceedings of IMECE2004 2004 ASME International Mechanical Engineering Congress  

E-print Network

the pelvis of a person during body weight sup- ported stepping on a treadmill. The device can be used with body weight support (BWS) and man- ual assistance of the legs and pelvis is a promising new ther- apy to record and re- play the pelvic motions that occur during normal walking. INTRODUCTION Gait training

Bobrow, James E.

240

Proceedings of DETC02 2002 ASME Design Engineering Technical Conferences  

E-print Network

the final part. The computer representation of the part plays a central role in this process. While a human can easily interpret a shaded 3D surface model or a display of a wire-frame model with dashed hidden contain errors such as cracks and penetrating or extrane- ous faces. Service bureaus that manufacture LM

McMains, Sara

241

Proceedings of DETC'2004: ASME 2004 Design Engineering Technical Conferences  

E-print Network

. However, uncertainty quantification of its effects on an end-product is a very challenging task are commonly regarded as the most important parameters of interest for characterizing a probabilistic system deterministic model is very costly. In an exact fashion, the variance is directly calculated by the integration

Chen, Wei

242

Proceedings of DETC'98 1998 ASME Design Engineering Technical Conferences  

E-print Network

de S BMW AG CAD/CAM Methods and Process Development 80788 Munich Federal Republic of Germany email: antonino.gomesdesa@bmw.de Gabriel Zachmann Fraunhofer Institute for Computer Graphics Rundeturmstra?e 6 of a user survey performed at BMW are presented, showing the acceptance and feasability of VP

Zachmann, Gabriel

243

Proceedings of DETC'99 1999 ASME Design Engineering Technical Conferences  

E-print Network

little attention so far. For exam- ple, one of the best known anomalies in ultrasonic percussive drilling, Las Vegas, Nevada, USA DETC99/VIB-8033 NONLINEAR DYNAMICS OF PERCUSSIVE DRILLING OF HARD MATERIALS- ment of material removal rate (MRR) in percussive drilling is associated with generating impact forces

Krivtsov, Anton M.

244

Proceedings of IMECE 2004 2004 ASME International Mechanical Engineering Congress  

E-print Network

, it is shown that the deformation mode of the polymer asperities is plastic. The required input parameters RMS surface roughness, m = non-dimensional parameter Rs/Rb = Poisson's ratio Subscripts 0- tion/spreading resistance of the microcontacts at the inter- face. Performing a deformation analysis

Bahrami, Majid

245

Proceedings of 2002 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

, transient discrete ordinates method and transient radiation element method are conducted. INTRODUCTION are that it is time-consuming and that the results are subject to statistical error due to practical finite samplings

Guo, Zhixiong "James"

246

Proceedings of 2001 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

-HYDRAULIC SYSTEM Hong Sun 500 McCarthy Blvd, Maxtor Inc. Milpitas, California 95003 George T.-C Chiu Ray W. Herrick as well as attempt to handle the parameter variation associated with the hydraulic systems. Chiu [1 different approaches to explicitly address the motion synchronization issue. Sun and Chiu [10][11] proposed

Chiu, George T.-C.

247

Numerical methods for fluid transient analysis; Proceedings of the Applied Mechanics, Bioengineering, and Fluids Engineering Conference, Houston, TX, June 20-22, 1983  

NASA Astrophysics Data System (ADS)

Among the topics discussed are implicit methods for the solution of the one-dimensional wave equation, second-order explicit methods for transient flow analysis, a generalized implicit finite difference method for transient analysis of compressible and incompressible fluid flows, the modeling of transient two-component flow with a four-point implicit method, one-dimensional transient gas flow with internal heating, transient pressure wave radial and axial variations, and vaporous and gaseous cavitation simulation. Also discussed are variable celerity modeling by the method of characteristics, a numerical model for transients in petroleum product pipelines, solid-liquid-gas mixture one-dimensional transient flows, hydraulic transients in tunnels with concurrent open channel and pressurized flow, and waterhammer transient control with dynamic programming of valve stoking. For individual items see A84-13235 to A84-13238

Martin, C. S.; Chaudhry, M. H.

248

A study on vortex flow control on inlet distortion in the re-engined 727-100 center inlet duct using computational fluid dynamics  

NASA Technical Reports Server (NTRS)

Computational fluid dynamics was used to investigate the management of inlet distortion by the introduction of discrete vorticity sources at selected locations in the inlet for the purpose of controlling secondary flow. These sources of vorticity were introduced by means of vortex generators. A series of design observations were made concerning the importance of various vortex generator design parameters in minimizing engine face circumferential distortion. The study showed that vortex strength, generator scale, and secondary flow field structure have a complicated and interrelated influence on the engine face distortion, over and above the initial geometry and arrangement of the generators. The installed vortex generator performance was found to be a function of three categories of variables: the inflow conditions, the aerodynamic characteristics associated with the inlet duct, and the design parameters related to the geometry, arrangement, and placement of the vortex generators within the outlet duct itself.

Anderson, Bernhard H.; Huang, Pao S.; Paschal, William A.; Cavatorta, Enrico

1992-01-01

249

A study on vortex flow control of inlet distortion in the re-engined 727-100 center inlet duct using computational fluid dynamics  

NASA Technical Reports Server (NTRS)

Computational fluid dynamics was used to investigate the management of inlet distortion by the introduction of discrete vorticity sources at selected locations in the inlet for the purpose of controlling secondary flow. These sources of vorticity were introduced by means of vortex generators. A series of design observations were made concerning the importance of various vortex generator design parameters in minimizing engine face circumferential distortion. The study showed that vortex strength, generator scale, and secondary flow field structure have a complicated and interrelated influence on the engine face distortion, over and above the initial geometry and arrangement of the generators. The installed vortex generator performance was found to be a function of three categories of variables: the inflow conditions, the aerodynamic characteristics associated with the inlet duct, and the design parameters related to the geometry, arrangement, and placement of the vortex generators within the outlet duct itself.

Anderson, Bernhard H.; Huang, Pao S.; Paschal, William A.; Cavatorta, Enrico

1992-01-01

250

Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint  

SciTech Connect

Hydrodynamic loads on the platforms of floating offshore wind turbines are often predicted with computer-aided engineering tools that employ Morison's equation and/or potential-flow theory. This work compares results from one such tool, FAST, NREL's wind turbine computer-aided engineering tool, and the computational fluid dynamics package, OpenFOAM, for the OC4-DeepCwind semi-submersible analyzed in the International Energy Agency Wind Task 30 project. Load predictions from HydroDyn, the offshore hydrodynamics module of FAST, are compared with high-fidelity results from OpenFOAM. HydroDyn uses a combination of Morison's equations and potential flow to predict the hydrodynamic forces on the structure. The implications of the assumptions in HydroDyn are evaluated based on this code-to-code comparison.

Benitz, M. A.; Schmidt, D. P.; Lackner, M. A.; Stewart, G. M.; Jonkman, J.; Robertson, A.

2014-09-01

251

Radiation-induced temperature shift of thhe ASME K/sub Ic/ curve  

SciTech Connect

The objective of this study was to determine the effects of neutron irradiation on the temperature shift and shape of the K/sub Ic/ curve described in Sect. XI of the ASME Boiler and pressure Vessel Code. Two submerged-arc welds with copper contents of 0.23 and 0.31 wt % were commercially fabricated in 215-mm-thick plate. Charpy impact, tensile, dropweight, and compact specimens up to 203.2 mm thick were fabricated and tested to provide a large data for unirradiated material. Similar specimens with compacts up to 101.6 mm thick, irradiated at about 288/degree/C to a mean fluence of about 1.6 /times/ 10/sup 19/ neutrons/cm/sup 2/ in the Oak Ridge Research Reactor, were tested to provide a similarly large data base with which to evaluate the temperature shift and shape of the ASME K/sub Ic/ curves. Testing was performed by both Oak Ridge National Laboratory and Materials Engineering Associates. Both linear-elastic and elastic-plastic fracture mechanics techniques were used to analyze test results. 3 refs., 4 figs., 1 tab.

Nanstad, R.K.; Haggag, F.M.; Iskander, S.K.

1989-01-01

252

Magnetically stimulated fluid flow patterns  

SciTech Connect

Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

Martin, Jim; Solis, Kyle

2014-03-06

253

Fundamentals of fluid lubrication  

NASA Technical Reports Server (NTRS)

The aim is to coordinate the topics of design, engineering dynamics, and fluid dynamics in order to aid researchers in the area of fluid film lubrication. The lubrication principles that are covered can serve as a basis for the engineering design of machine elements. The fundamentals of fluid film lubrication are presented clearly so that students that use the book will have confidence in their ability to apply these principles to a wide range of lubrication situations. Some guidance on applying these fundamentals to the solution of engineering problems is also provided.

Hamrock, Bernard J.

1991-01-01

254

Formulation and evaluation of C-Ether fluids as lubricants useful to 260 C. [air breathing engines  

NASA Technical Reports Server (NTRS)

Three base stocks were evaluated in bench and bearing tests to determine their suitability for use at bulk oil temperatures (BOT) from -40 C to +260 C. A polyol ester gave good bearing tests at a bulk temperature of 218 C, but only a partially successful run at 274 C. These results bracket the fluid's maximum operating temperature between these values. An extensive screening program selected lubrication additives for a C-ether (modified polyphenyl ether) base stock. One formulation lubricated a bearing for 111 hours at 274 C (BOT), but this fluid gave many deposit related problems. Other C-ether blends produced cage wear or fatigue failures. Studies of a third fluid, a C-ether/disiloxane blend, consisted of bench oxidation and lubrication tests. These showed that some additives react differently in the blend than in pure C-ethers.

Clark, F. S.; Miller, D. R.

1980-01-01

255

EXPERIMENTAL AND ENGINEERING SUPPORT FOR THE CAFB (CHEMICALLY ACTIVE FLUID-BED) DEMONSTRATION: RESIDUE DISPOSAL/UTILIZATION  

EPA Science Inventory

The report gives results of an investigation of the disposal and utilization of spent sulfur sorbent from the Chemically Active Fluid-bed (CAFB) process. Lignite ash with a minimum of 10% CaO can be used as a replacement for sand or medium aggregate or as a partial replacement fo...

256

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 52, NO. 4, APRIL 2005 557 Pulsatile Cerebrospinal Fluid Dynamics in the  

E-print Network

in communicating hydrocephalus. Further- more, Hakim's hypothesis cannot explain why the intracranial pressure (ICP) often returns to almost normal levels in patients with communicating hydrocephalus. An understanding of the basic underlying fluid mechanics in the normal brain and in hydrocephalus is needed to develop more

Linninger, Andreas A.

257

With faster processors and better numerical techniques, computational fluid dynamics (CFD) tools have revolutionized engineering design and optimization--  

E-print Network

with multimode heat transfer and phase change · Complex turbulent unsteady flow and acoustic analysis · Numerical encountered in heat exchangers and reactors. The figure shows the streamlines and vorticity surfaces solve complex fluid flow and heat transfer problems including: · Conjugate heat and flow analysis

Chapman, Clark R.

258

A design strategy for the use of vortex generators to manage inlet-engine distortion using computational fluid dynamics  

NASA Technical Reports Server (NTRS)

A reduced Navier-Stokes solution technique was successfully used to design vortex generator installations for the purpose of minimizing engine face distortion by restructuring the development of secondary flow that is induced in typical 3-D curved inlet ducts. The results indicate that there exists an optimum axial location for this installation of corotating vortex generators, and within this configuration, there exists a maximum spacing between generator blades above which the engine face distortion increases rapidly. Installed vortex generator performance, as measured by engine face circumferential distortion descriptors, is sensitive to Reynolds number and thereby the generator scale, i.e., the ratio of generator blade height to local boundary layer thickness. Installations of corotating vortex generators work well in terms of minimizing engine face distortion within a limited range of generator scales. Hence, the design of vortex generator installations is a point design, and all other conditions are off design. In general, the loss levels associated with a properly designed vortex generator installation are very small; thus, they represent a very good method to manage engine face distortion. This study also showed that the vortex strength, generator scale, and secondary flow field structure have a complicated and interrelated influence over engine face distortion, over and above the influence of the initial arrangement of generators.

Anderson, Bernhard H.; Levy, Ralph

1991-01-01

259

Estimating diesel engine performance by indirect methods  

E-print Network

ESTIMATING DIESEL ENGINE PERFORMANCE BY INDIRECT METHODS A Thesis by MICHAEL MCKIERNAN Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements of the degree of MASTER OF SCIENCE May 1987 Major... Subject: Agricultural Engineering ESTIMATING DIESEL ENGINE PERFORMANCE BY INDIRECT NETHODS A Thesis by NICHAEL MCKIERNAN Approved as to style and content by: i A. Stout (Chairman of Comittee) ephen W. Searcy (Member) Thomas R. La (Nember...

McKiernan, Michael

1987-01-01

260

1 Copyright ## by ASME Proceedings of ICEM `03  

E-print Network

in cement is the favoured method in the UK for disposal of intermediate and low level radioactive wastes and in particular, its associated radioactive properties. Within the UK there are three categories, Low Level Waste1 Copyright © ## by ASME Proceedings of ICEM `03: The 9th International Conference on Radioactive

Sheffield, University of

261

1 Copyright 2004 by ASME MICROCHANNEL EXPERIMENTAL STRUCTURE FOR MEASURING  

E-print Network

1 Copyright © 2004 by ASME MICROCHANNEL EXPERIMENTAL STRUCTURE FOR MEASURING TEMPERATURE FIELDS, Arizona 85226 ABSTRACT This work designs and fabricates a microchannel structure for measurement of wall temperature fields in two-phase flow. The microchannel with hydraulic diameter of 100 micrometers is etched

Hidrovo, Carlos H.

262

Copyright 2000 by ASME1 Proceedings of DETC'00  

E-print Network

Copyright © 2000 by ASME1 Proceedings of DETC'00: 26th Biennial Mechanisms and Robotics Conference WIRE BUNDLE ACTUATOR Michael J. Mosley1 and Constantinos Mavroidis2 Robotics and Mechatronics. A PID based controller with the addition of an input shaping function was developed for each loading

Mavroidis, Constantinos

263

1 Copyright 2009 by ASME ICNMM2009-82262  

E-print Network

1 Copyright © 2009 by ASME ICNMM2009-82262 COOLING OF MICROELECTRONIC DEVICES PACKAGED IN A SINGLE cooling devices. 1. INTRODUCTION The current trend in IC technology is to increase the packing density CHIP MODULE USING SINGLE PHASE REFRIGERANT R-123 Tushara Pasupuleti Rochester Institute of Technology

Kandlikar, Satish

264

ASME B31.3: Recent changes and future developments  

SciTech Connect

ASME B31.3 has undergone significant changes in recent years to better serve the industries that it supports. The Code has changed in response to changing technology, inquiries to the committee, technical needs, clarification of requirements and editorial considerations. This paper discusses those significant changes and planned future developments.

Koves, W.J. [UOP, Des Plaines, IL (United States); Frikken, D. [Monsanto, St. Louis, MO (United States)

1996-12-01

265

After-School Math PLUS (ASM+) Final Evaluation Report  

ERIC Educational Resources Information Center

This report summarizes findings from the Academy for Educational Development's (AED's) evaluation of After-School Math PLUS (ASM+). This program was designed to help students find the math in everyday experiences and create awareness about the importance of math skills for future career options. The evaluation was conducted by AED's Center for

Academy for Educational Development, 2007

2007-01-01

266

NIST Standard Reference Database 10 NIST/ASME Steam Properties  

E-print Network

#12;NIST Standard Reference Database 10 NIST/ASME Steam Properties Version 2.22 Users' Guide Allan of the Database and to verify that the data contained therein have been selected on the basis of sound scientific that may result from errors or omissions in the Database. ________________________ © 1987, 1996, 2008

Magee, Joseph W.

267

Cell sourcing for bone tissue engineering: Amniotic fluid stem cells have a delayed, robust differentiation compared to mesenchymal stem cells  

Microsoft Academic Search

Cell based therapies for bone regeneration are an exciting emerging technology, but the availability of osteogenic cells is limited and an ideal cell source has not been identified. Amniotic fluid-derived stem cells (AFS) and bone-marrow derived mesenchymal stem cells (MSCs) were compared to determine their osteogenic differentiation capacity in both 2D and 3D environments. In 2D culture, the AFS cells

Alexandra Peister; Maria A. Woodruff; Jarod J. Prince; Derwin P. Gray; Dietmar W. Hutmacher; Robert E. Guldberg

2011-01-01

268

Engine having multiple pumps driven by a single shaft  

DOEpatents

An engine comprises an engine housing. A first engine fluid sub-system that includes a first pump and the engine housing defining a first fluid passage is also included in the engine. The engine also includes at least one additional engine fluid sub-system that includes a second pump and the engine housing defining a second fluid passage. A rotating shaft is at least partially positioned in the engine housing, the first pump and the second pump.

Blass, James R. (Bloomington, IL)

2001-01-01

269

Applied Fluid Mechanics. Lecture Notes.  

ERIC Educational Resources Information Center

This set of lecture notes is used as a supplemental text for the teaching of fluid dynamics, as one component of a thermodynamics course for engineering technologists. The major text for the course covered basic fluids concepts such as pressure, mass flow, and specific weight. The objective of this document was to present additional fluids

Gregg, Newton D.

270

Fluid mass and thermal loading effects on the modal characteristics of space shuttle main engine liquid oxygen inlet splitter vanes  

NASA Technical Reports Server (NTRS)

An analysis and evaluation of experimental modal survey test data on the variations of modal characteristics induced by pressure and thermal loading events are presented. Extensive modal survey tests were carried out on a Space Shuttle Main Engine (SSME) test article using liquid nitrogen under cryogenic temperatures and high pressures. The results suggest that an increase of pressure under constant cryogenic temperature or a decrease of temperature under high pressure induces an upward shift of frequencies of various modes of the structures.

Panossian, H. V.; Boehnlein, J. J.

1987-01-01

271

Registration Form American Society of Materials UTA Summer Camp 2014 Materials Science and Engineering,  

E-print Network

Registration Form American Society of Materials UTA Summer Camp ­ 2014 Materials Science of Materials Science and Engineering 501 W. 1st Street, Room 231 ­ Engineering Laboratory Building PO Box 19031 Arlington, TX 76019 #12;ASM International Materials Science Camp at Materials Science and Engineering

Texas at Arlington, University of

272

YOUR Career in Fluid Power  

NSDL National Science Digital Library

This video is a high-energy, high-impact introduction to the fluid power industry that encourages high school and college students to consider the world of fluid power engineering and the exciting careers available in the field. The video offers a realistic look at the opportunities and challenges facing three young fluid power engineers. A Companion Resource web site has been developed for students interested in learning about fluid power through fun and interesting games and animation. The Companion Resource web site provides in-depth information about fluid power technology and the available career opportunities.

National Fluid Power Association

273

[Ca2+]i oscillations in ASM: Relationship with persistent airflow obstruction in asthma  

PubMed Central

The cause of airway smooth muscle (ASM) hypercontractility in asthma is not fully understood. The relationship of spontaneous intracellular calcium oscillation frequency in ASM to asthma severity was investigated. Oscillations were increased in subjects with impaired lung function abolished by extracellular calcium removal, attenuated by caffeine and unaffected by verapamil or nitrendipine. Whether modulation of increased spontaneous intracellular calcium oscillations in ASM from patients with impaired lung function represents a therapeutic target warrants further investigation. PMID:24850215

Sweeney, David; Hollins, Fay; Gomez, Edith; Saunders, Ruth; Challiss, RA John; Brightling, Christopher E

2014-01-01

274

Engineering Engineering  

E-print Network

Engineering Engineering Technology & A T P E N N S T A T E 2 0 1 0 ­ 2 0 1 1 #12;2 Join us at penn state! Since 1896, Penn State has been a leader in engineering and engineering technology education varieties of engineering and engineering technology majors found anywhere in the United States. This means

Maroncelli, Mark

275

The ASM Method for System Design and Analysis. A Tutorial Introduction  

E-print Network

application domain Verification Application Domain Knowledge Ground Model Informal Requirements Code Validation + Fig. 1. Models and methods in the ASM-based development process The integration potential

Börger, Egon

276

The role of computational fluid dynamics in aeronautical engineering (8): A mixed compression inlet for a supersonic airplane  

NASA Astrophysics Data System (ADS)

A numerical investigation of a supersonic mixed-compression inlet is carried out. The inlet is designed for Mach 2.5 by applying the Method of Characteristics. Realistic ramp bleed and throat bypass systems are simulated by a two-dimensional, finite volume, multiblock Total Variation Diminishing (TVD) Navier-Stokes code. From the calculations, the roles of ramp bleed and throat bypass systems are revealed. The mechanism for improving the pressure recovery ahead of an inlet upstart is found for the first time in detail. The results show that the throat gap, or slot, constructs an optimum equivalent wall configuration automatically by the flow conditions around the systems. This result can be obtained because of the great advantage of the computational fluid dynamics (CFD) approach.

Fujimoto, Akira; Niwa, Nobuo; Sawada, Keisuke

1990-11-01

277

1 Copyright 2004 by ASME Proceedings of  

E-print Network

called the coefficient of kinetic friction. Similarly the coefficient of static friction is the ratio. These friction laws can be summarized by defining the coefficient of friction m as F P m = (1) without OF CURVATURES IN A CONTACT AND FRICTION MODEL George G. Adams Mechanical and Industrial Engineering Department

Müftü, Sinan

278

Proceedings of the 1994 ASME/IEEE joint railroad conference  

SciTech Connect

The proceedings contains 22 papers from the IEEE/ASME Joint Railroad Conference. Topics discussed include flange bearing crossing frogs; rapid transit; vehicle on-board computer systems; total transport system control functions; automated train dispatching system; wheel thermal damage limits; AC propulsion; AC traction drives; electric power supplies; failure detection and identification; cargo transportation; and critical speed for railroad vehicles. Papers within the scope of the data base have been processed separately.

Hawthorne, K.L. [ed.; Hill, J.R. [ed.

1994-12-31

279

ASME code ductile failure criteria for impulsively loaded pressure vessels  

SciTech Connect

Ductile failure criteria suitable for application to impulsively loaded high pressure vessels that are designed to the rules of the ASME Code Section VI11 Division 3 are described and justified. The criteria are based upon prevention of load instability and the associated global failure mechanisms, and on protection against progressive distortion for multiple-use vessels. The criteria are demonstrated by the design and analysis of vessels that contain high explosive charges.

Nickell, Robert E.; Duffey, T. A. (Thomas A.); Rodriguez, E. A. (Edward A.)

2003-01-01

280

Recent changes to ASME B31.3  

SciTech Connect

The code for process piping, ASME B31.3 Chemical Plant and Petroleum Refinery Piping, has undergone significant changes and additions in recent years. This includes many aspects of design, materials, and fabrication. Included are substantial changes to material impact testing requirements, qualification procedures for unlisted components, coverage of bellows expansion joints, and safety relief set pressure requirements. This paper provides an update on some of these recent changes to the Code together with some background on reasons for the changes.

Becht, C. IV [Becht Engineering Co., Liberty Corner, NJ (United States); Frikken, D.R. [Monsanto Co., St. Louis, MO (United States); Bane, E.J.

1996-07-01

281

Recording fluid currents by holography  

NASA Technical Reports Server (NTRS)

Convection in fluids can be studied with aid of holographic apparatus that reveals three-dimensional motion of liquid. Apparatus eliminates images of fixed particles such as dust on windows and lenses, which might mask behavior of moving fluid particles. Holographic apparatus was developed for experiments on fluid convection cells under zero gravity. Principle is adaptable to study of fluid processes-for example, electrochemical plating and combustion in automotive engines.

Heflinger, L. O.; Wuerker, R. F.

1980-01-01

282

Fluid Power WWW Virtual Library  

NSDL National Science Digital Library

Providing links to sites about hydraulic and pneumatic power transmission and control, The WWW Virtual Library for Fluid Power is run in association with Fluid PowerNet (an international network of fluid power R&D laboratories). Academic and industrial research sites, discussion groups, and personal Websites dealing with fluid power can be accessed, along with a regularly updated listing of conferences and events. Simulation, conditions monitoring, control engineering, failure modes, and effects analysis are a few of the topics covered.

283

Fluid pressure is a magnitude-dependent modulator of early endothelial tubulogenic activity: implications related to a potential tissue-engineering control parameter.  

PubMed

A significant barrier to the success of engineered tissues is the inadequate transport of nutrients and gases to, and waste away from, cells within the constructs, after implantation. Generation of microtubular networks by endothelial cells in engineered constructs to mimic the in vivo transport scheme is essential for facilitating tissue survival by promoting the in vitro formation of microvessels that integrate with host microvasculature, after implantation. Previously, we reported that select pressures stimulate endothelial proliferation involving protubulogenic molecules such as fibroblast growth factor-2 (FGF-2) and vascular endothelial growth factor-C (VEGF-C). Based on this, we investigated fluid pressure as a selective modulator of early tubulogenic activity with the intent of assessing the potential utility of this mechanical stimulus as a tissue-engineering control parameter. For this purpose, we used a custom pressure system to expose two-dimensional (2D) and three-dimensional (3D) cultures of endothelial cells to static pressures of 0 (controls), 20, or 40?mmHg for 3 days. Compared to controls, 2D endothelial cultures exposed to 20, but not 40?mmHg, exhibited significantly (p<0.05) enhanced cell growth that depended on VEGF receptor-3 (VEGFR-3), a receptor for VEGF-C. Moreover, endothelial cells grown on microbeads and suspended in 3D collagen gels under 20?mmHg, but not 40?mmHg, displayed significantly (p<0.05) increased sprout formation. Interestingly, pressure-dependent proliferation and sprout formation occurred in parallel with pressure-sensitive upregulation of VEGF-C and VEGFR-3 expression and were sensitive to local FGF-2 levels. Collectively, the results of the present study provided evidence that early endothelial-related tubulogenic activity depends on local hydrostatic pressure levels in the context of local growth factor conditions. In addition to relevance to microvascular diseases associated with interstitial hypertension (e.g., cancer and glaucoma), these findings provided first insight into the potential utility of hydrostatic pressure as a fine-tune control parameter to optimize microvascularization of tissue-engineering constructs in the in vitro setting before their implantation. PMID:22793042

Shin, Hainsworth Y; Underwood, Ryan M; Fannon, Michael W

2012-12-01

284

Fluid Pressure Is a Magnitude-Dependent Modulator of Early Endothelial Tubulogenic Activity: Implications Related to a Potential Tissue-Engineering Control Parameter  

PubMed Central

A significant barrier to the success of engineered tissues is the inadequate transport of nutrients and gases to, and waste away from, cells within the constructs, after implantation. Generation of microtubular networks by endothelial cells in engineered constructs to mimic the in vivo transport scheme is essential for facilitating tissue survival by promoting the in vitro formation of microvessels that integrate with host microvasculature, after implantation. Previously, we reported that select pressures stimulate endothelial proliferation involving protubulogenic molecules such as fibroblast growth factor-2 (FGF-2) and vascular endothelial growth factor-C (VEGF-C). Based on this, we investigated fluid pressure as a selective modulator of early tubulogenic activity with the intent of assessing the potential utility of this mechanical stimulus as a tissue-engineering control parameter. For this purpose, we used a custom pressure system to expose two-dimensional (2D) and three-dimensional (3D) cultures of endothelial cells to static pressures of 0 (controls), 20, or 40?mmHg for 3 days. Compared to controls, 2D endothelial cultures exposed to 20, but not 40?mmHg, exhibited significantly (p<0.05) enhanced cell growth that depended on VEGF receptor-3 (VEGFR-3), a receptor for VEGF-C. Moreover, endothelial cells grown on microbeads and suspended in 3D collagen gels under 20?mmHg, but not 40?mmHg, displayed significantly (p<0.05) increased sprout formation. Interestingly, pressure-dependent proliferation and sprout formation occurred in parallel with pressure-sensitive upregulation of VEGF-C and VEGFR-3 expression and were sensitive to local FGF-2 levels. Collectively, the results of the present study provided evidence that early endothelial-related tubulogenic activity depends on local hydrostatic pressure levels in the context of local growth factor conditions. In addition to relevance to microvascular diseases associated with interstitial hypertension (e.g., cancer and glaucoma), these findings provided first insight into the potential utility of hydrostatic pressure as a fine-tune control parameter to optimize microvascularization of tissue-engineering constructs in the in vitro setting before their implantation. PMID:22793042

Underwood, Ryan M.; Fannon, Michael W.

2012-01-01

285

Enhanced osteogenesis of human alveolar bone-derived mesenchymal stem cells for tooth tissue engineering using fluid shear stress in a rocking culture method.  

PubMed

This study instituted a simple approach to stimulate alveolar bone regeneration for tooth tissue engineering by controlling effects of low fluid dynamic shear stress (LFDSS) on growth and differentiation in vitro. Human alveolar bone-derived mesenchymal stem cells (hABMSCs) harvested from human mandibular alveolar bone were cultured with LFDSS to generate cultures containing bone-like formations. To distinguish between osteodifferentiation and bone-like formation, cells were cultured either with or without fluid shear stress. The calcium content and alkaline phosphatase (ALP) activity of hABMSCs were used as indicators of osteogenesis. Cell viability and proliferation after stimulating with LFDSS for 10-60?min/day were higher than with longer stimulations. Mineralized nodules formed when osteoblasts were cultured with an induction medium, a marker of osteogenic differentiation. ALP activity tended to increase after 10 and 60?min/day of stimulation. In addition, LFDSS conditions also increased gene expression of IBSP, RUNX2, COL-I, ALP, OCN, and OPN, as shown by reverse transcriptase-polymerase chain reaction. From the results of a proteomics array, LFDSS groups were intensely expressed with several factors (EGF, HGF, IGF, TGF, and PDGF). Furthermore, CD146 and Stro-1 expression increased in cells treated with 30?min/day and decreased in cells treated with 120?min/day, as determined by cell surface antigen analysis by fluorescence-activated cell-sorting analysis. These results strongly showed that LFDSS at the proper intensity and time enhanced the differentiation and maturation of hABMSCs. In conclusion, an appropriate level of LFDSS can potently and positively modulate proliferation and differentiation in hABMSCs. PMID:23088630

Lim, Ki-Taek; Kim, Jangho; Seonwoo, Hoon; Chang, Jung Uk; Choi, Hwajung; Hexiu, Jin; Cho, Woo Jae; Choung, Pill-Hoon; Chung, Jong Hoon

2013-02-01

286

Bare carbon steel electrodes and fluxes for submerged arc welding (ASME SFA-5. 17 with additional requirements)  

SciTech Connect

This standard covers bare carbon steel electrodes and fluxes for submerged arc welding in nuclear and associated applications. Material shall conform to the requirements of ASME SFA-5.17; to the requirements of the ASME Boiler and Pressure Vessel Code (ASME Code), Section III, Article NB-2000; and to the additional requirements of this standard.

Not Available

1982-08-01

287

46 CFR 53.01-3 - Adoption of section IV of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2012 CFR

...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. 53.01-3 Section...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. (a) Heating boilers...with section IV of the ASME Boiler and Pressure Vessel Code (incorporated by...

2012-10-01

288

46 CFR 53.01-3 - Adoption of section IV of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2011 CFR

...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. 53.01-3 Section...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. (a) Heating boilers...with section IV of the ASME Boiler and Pressure Vessel Code (incorporated by...

2011-10-01

289

46 CFR 53.01-3 - Adoption of section IV of the ASME Boiler and Pressure Vessel Code.  

Code of Federal Regulations, 2010 CFR

...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. 53.01-3 Section...Adoption of section IV of the ASME Boiler and Pressure Vessel Code. (a) Heating boilers...with section IV of the ASME Boiler and Pressure Vessel Code (incorporated by...

2010-10-01

290

Fluid Mechanics and Hydrology  

NASA Astrophysics Data System (ADS)

Present day Engineers need to understand water, its properties, its distribution as well as its movement. Certain engineering disciplines may require a course in Hydraulics and Hydrology. However, most other disciplines require courses in Fluid Mechanics and Thermodynamics. The author believes Hydrology is an essential knowledge that most engineers should possess, regardless of their discipline. Water is consumed or circulated in huge quantities in certain types of industries and location of water resources / supply may play a key role in the selection of a future factory site. Pulp and Paper Manufacturing Industries, Chemical Industries, Heat Treatment Facilities are just a few that one can mention. A typical Engineering Fluid Mechanics Course normally covers the broad discipline of Engineering Mechanics that is concerned with the behavior of Liquids and gases at rest or in motion. Water, of course is one of the liquids discussed. Regardless, Engineers are totally ignorant of the subject matter of Hydrology or the Hydrologic Cycle and their importance in the twenty-first century Engineering Environment. In this short paper, the author outlines the methods of successfully incorporating Hydrology into an Engineering Fluid Mechanics Course.

Osterkamp, W. R.; Gray, J. R.; Narayanan, M.

2002-12-01

291

3D automatic anatomy recognition based on iterative graph-cut-ASM  

NASA Astrophysics Data System (ADS)

We call the computerized assistive process of recognizing, delineating, and quantifying organs and tissue regions in medical imaging, occurring automatically during clinical image interpretation, automatic anatomy recognition (AAR). The AAR system we are developing includes five main parts: model building, object recognition, object delineation, pathology detection, and organ system quantification. In this paper, we focus on the delineation part. For the modeling part, we employ the active shape model (ASM) strategy. For recognition and delineation, we integrate several hybrid strategies of combining purely image based methods with ASM. In this paper, an iterative Graph-Cut ASM (IGCASM) method is proposed for object delineation. An algorithm called GC-ASM was presented at this symposium last year for object delineation in 2D images which attempted to combine synergistically ASM and GC. Here, we extend this method to 3D medical image delineation. The IGCASM method effectively combines the rich statistical shape information embodied in ASM with the globally optimal delineation capability of the GC method. We propose a new GC cost function, which effectively integrates the specific image information with the ASM shape model information. The proposed methods are tested on a clinical abdominal CT data set. The preliminary results show that: (a) it is feasible to explicitly bring prior 3D statistical shape information into the GC framework; (b) the 3D IGCASM delineation method improves on ASM and GC and can provide practical operational time on clinical images.

Chen, Xinjian; Udupa, Jayaram K.; Bagci, Ulas; Alavi, Abass; Torigian, Drew A.

2010-02-01

292

History of the internal combustion engine  

SciTech Connect

The study of engineering history by the practioners of engineering is not well-developed. This is unfortunate, because if nothing else, it is the culture of our profession, but even more importantly, it provides us with a proper understanding of current and future engineering. Without an adequate historical background the engineer could, for example, respond incorrectly to problems that might arise in some device or make inappropriate changes in the design. History can also suggest the path that might be followed by a new product, and thereby guide the development and marketing. Because of the fuller appreciation of the art and science of engineering that is provided by an awareness of engineering history, it seems appropriate for the ASME to recognize the role in our profession. The papers in this volume, which deal and various aspects of the history of the internal combustion engine, were presented in a session at the Fall Technical Conference of the ASME Internal Combustion Engine Division held in Dearborn, Michigan on October 17, 1989. The session was jointly sponsored and arranged by the Internal Combustion Engine Division and by the History and Heritage Committee of ASME. It is the first in what the latter hopes will be a regular series of sessions at various Society meetings jointly sponsored with the different divisions of the Society. It is hoped in this way to raise the consciousness of the engineering community to its history and to encourage in particular the preparation of historical papers by engineer-historians, who are involved in the practice of engineering. An approximate chronological order has been chosen for the arrangement of the papers, with the first, by H.O. Hardenberg, being on the gunpowder engines, which were experimented with from the sixteenth century to the middle of the nineteenth century.

Somerscales, E.F.C. (Rensselaer Polytechnic Inst., Troy, NY (United States)); Zagotta, A.A. (Sealed Power Corp., Muskegon, MI (US))

1989-01-01

293

Fluid infusion system  

NASA Technical Reports Server (NTRS)

Performance testing carried out in the development of the prototype zero-g fluid infusion system is described and summarized. Engineering tests were performed in the course of development, both on the original breadboard device and on the prototype system. This testing was aimed at establishing baseline system performance parameters and facilitating improvements. Acceptance testing was then performed on the prototype system to verify functional performance. Acceptance testing included a demonstration of the fluid infusion system on a laboratory animal.

1974-01-01

294

Vaporizer design criteria for ethanol fueled internal combustion engines  

E-print Network

VAPORIZER DESIGN CRITERIA FOR ETHANOL FUELED INTERNAL COMBUSTION ENGINES A Thesis by ARACHCHI RALLAGE ARIYARATNE Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1985 Major Subject: Agricultural Engineering VAPORIZER DESIGN CRITERIA FOR ETHANOL FUELED INTERNAL COMBUSTION ENGINES A Thesis by ARACHCHI RALLAGE ARIYARATNE Approved as to style and content by: Wayne A. LePori (Chairman) Bill A...

Ariyaratne, Arachchi Rallage

1985-01-01

295

1 Copyright 2010 by ASME Proceedings of the ASME 2010 Eighth International Fuel Cell Science, Engineering and Technology Conference  

E-print Network

the biomimetic design method involves gathering liquid water with cavities and directing the liquid water out cell. INTRODUCTION The proton exchange membrane (PEM) fuel cell is a promising energy conversion device-33348 WATER MANAGEMENT CONCEPTS IN PEMFC WITH BIOMIMETIC AND TRIZ DESIGN METHODS Keith Fung J.S. Wallace L

Shu, Lily H.

296

1 Copyright 2007 by ASME Proceedings of the ASME 2007 International Design Engineering Technical Conferences & Computers and  

E-print Network

; Mixed Logit; Design Optimization 1. INTRODUCTION The laptop computer has become a mainstream product Vegas, Nevada, USA DETC2007/DAC-34883 DRAFT: DESIGN OPTIMIZATION OF A LAPTOP COMPUTER USING AGGREGATE@cmu.edu ABSTRACT Laptop computers are designed in a variety of shapes and sizes in order to satisfy diverse

Michalek, Jeremy J.

297

77 FR 3073 - American Society of Mechanical Engineers (ASME) Codes and New and Revised ASME Code Cases...  

Federal Register 2010, 2011, 2012, 2013

...the use of an alternative examination volume for welds mitigated by optimized weld overlays. This alternative examination volume was...Additional Examinations for PWR Pressure Retaining Welds in Class 1 Components Fabricated with Alloy...

2012-01-23

298

1 Copyright 2008 by ASME Proceedings of the 9th Biennial ASME Conference on Engineering Systems Design and Analysis  

E-print Network

Design and Analysis ESDA08 July 7-9, 2008, Haifa, Israel ESDA2008-59290 DESIGN AND CONTROL OF CAPSTAN-PULLEY. The selection of the motor and the design of the speed controller in the optical fiber draw capstan pulley

Nagurka, Mark L.

299

Suggested Courses for ME Students Interested in Thermal/Fluids Sciences: Required courses  

E-print Network

) Comprehensive first course in basic and applied fluid mechanics. Fluid properties, statics, kinematics, and dynamics. Euler's and Bernoulli's equations. Hydrodynamics. Dimensional analysis and similitude. Real ­ Intro Thermal Fluids Engineering (2 credits) Basics of thermodynamics, fluid mechanics, and heat

Virginia Tech

300

Viscosity of diesel engine fuel oil under pressure  

NASA Technical Reports Server (NTRS)

In the development of Diesel engine fuel injection systems it is necessary to have an approximate knowledge of the absolute viscosity of the fuel oil under high hydrostatic pressures. This report presents the results of experimental tests conducted by Mr. Jackson Newton Shore, utilizing the A.S.M.E. high pressure equipment.

Hersey, Mayo D

1929-01-01

301

Thermal conductivity of nanoparticle-fluid mixture  

Microsoft Academic Search

Effective thermal conductivity of mixtures of fluids and nanometer-size particles is measured by a steady-state parallel-plate method. The tested fluids contain two types of nanoparticles, AlO and CuO, dispersed in water, vacuum pump fluid, engine oil, and ethylene glycol. Experimental results show that the thermal conductivities of nanoparticle-fluid mixtures are higher than those of the base fluids. Using theoretical models

X. Wang; Xianfan Xu

1999-01-01

302

The Variety of Fluid Dynamics.  

ERIC Educational Resources Information Center

Discusses three research topics which are concerned with eminently practical problems and deal at the same time with fundamental fluid dynamical problems. These research topics come from the general areas of chemical and biological engineering, geophysics, and pure mathematics. (HM)

Barnes, Francis; And Others

1980-01-01

303

Engineering Engineering  

E-print Network

Semiconductor Technology Sandia National Laboratories EE External Advisory Council CURRENT MEMBERS #12;Contents Engineering, please visit us online at www.fulton.asu.edu. THE DEPARTMENT OF ELECTRICAL ENGINEERING ANNUAL REPORT This publication is written, designed, and produced by the Ira A. Fulton School of Engineering

Zhang, Junshan

304

D0 Silicon Upgrade: ASME Code and Pressure Calculations for Liquid Nitrogen Subcooler  

SciTech Connect

Included in this engineering note are three separate calculation divisions. The first calculations are the determination of the required thickness of the LN{sub 2} subcooler flat head according to ASME code. This section includes Appendix A-C. The minimum plate thickness determined was 0.563 in. The actual thickness chosen in fabrication was a 3/4-inch plate milled to 0.594-inch at the bolt circle. Along with the plate thickness, this section calculates the required reinforcement area at the top plate penetrations. It was found that a 1/4-inch fillet weld at each penetration was adequate. The next set of calculations were done to prove that the subcooler internal pressure will always be less than 15 psig and therefore will not be classified as a pressure vessel. The subcooler is always open to a vent pipe. Appendix D calculations show that the vent pipe has a capacity of 1042 lbs/hr if 15 psig is present at the subcooler. It goes on to show that the inlet piping would at that flow rate, see a pressure drop of 104 psig. The maximum supply pressure of the LN{sub 2} storage dewar is 50 psig. Appendix E addresses required flow rates for steady state, loss of vacuum, or fire conditions. Page E9 shows a summary which states the maximum pressure would be 1.50 psig at fire conditions and internal pressure.

Kuwazaki, Andrew; Leicht, Todd; /Fermilab

1995-10-04

305

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

was provided in [6]. Sleep is generally divided into two broad types: rapid eye movement (REM) and non progress in a cycle from Stage I to REM sleep, then the cycle starts over again. Stage I sleep is referred/47878 MULTIFRACTIONAL PROPERTY ANALYSIS OF HUMAN SLEEP EEG SIGNALS Hu Shenga,b, YangQuan Chenb a. School of Electrical

Chen, YangQuan

306

Proceedings of the ASME 2012 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

for effective, and yet, easy-to-follow assembly instructions for humans. Manual generation of such high quality to the instruction generation system. The output is a set of multimodal instructions comprising text, graphical-71266 INSTRUCTION GENERATION FOR ASSEMBLY OPERATIONS PERFORMED BY HUMANS Krishnanand Kaipa Carlos Morato Boxuan Zhao

Gupta, Satyandra K.

307

Proceedings of the ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

embedded in a matrix 2 Theory Vibration attenuation is commonly achieved by exploiting dissipative effects-87620 VIBRATION ISOLATION VIA LINEAR AND NONLINEAR PERIODIC DEVICES A. Spadoni GALCIT California Institute of passive mechanical filters for vibration attenuation a low frequencies. Traditionally, this has been

Lausanne, Ecole Polytechnique Fédérale de

308

Proceedings of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

orthogonal decomposition [2­4]. Proper or- thogonal decomposition (POD), or similary Karhunen-Loeve de, Michigan 48864 Email: feeny@egr.msu.edu ABSTRACT A method of complex orthogonal decomposition is applied a method of complex orthogonal de- composition (COD) to the analysis of wave motions in one- dimensional

Feeny, Brian

309

Proceedings of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

of a method of complex orthogonal decomposition (COD) to the analysis of wave mo- tions in one orthogonal decomposition [2­4]. Proper or- thogonal decomposition (POD) is a standard tool that has been-28919 COMPLEX MODAL DECOMPOSITION FOR ESTIMATING WAVE PROPERTIES IN ONE-DIMENSIONAL MEDIA B. F. Feeny

Feeny, Brian

310

Proceedings of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

- eralization of proper orthogonal decomposition [8]. The purpose is to demonstrate how the analysis method can-48204 COMPLEX MODAL ANALYSIS OF THE SWIMMING MOTION OF A WHITING B. F. Feeny and A. K. Feeny Department, we perform complex modal analysis to further analyze and quantify the motion of the fish. The fish

Feeny, Brian

311

Proceedings of the ASME 2013 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

of ordinary differential equations (ODEs) while also reviewing optimization algorithms which have been derived Differential Equation SDM Steepest Descent Method 1 INTRODUCTION There currently exist a number of studies the power and scope of our differential geometry framework, we provide new tools for analyzing MDO systems

Crilly, Nathan

312

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

theory of creativity must be consistent with a modern understanding of brain function (Pfenninger has seen concepts from cognitive psychology applied to enhance the creative design process through attention. Understanding the mechanisms that allow the brain to change in response to experience may have

Shu, Lily H.

313

Proceedings of the ASME 2013 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

extremely limited buying power, the sheer size of the market makes these opportunities at- tractive a day represent approximately 5 trillion in purchasing power parity [4]. Non- governmental Organizations to create these products, including customer value chain analysis [8], design for the base of the pyramid

de Weck, Olivier L.

314

Proceedings of the ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

multi-body systems is of great interest in many different research areas, especially the optimal control of the motion of the human body itself. For several reasons it is important to under- stand the muscle is described in terms of redundant coordi- nates subject to holonomic constraints. For multi-body systems

Ober-Blöbaum, Sina

315

Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

is on efficient microstructural topology optimization for 3d-printing. In particular, the computational bottle-specifications into optimal, but perhaps complex, topologies, and then directly fabricate these through 3d-printing (see-level geometry, and localized micro-level structure to meet a desired objective. Current 3d-printing processes

Suresh, Krishnan

316

Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

biology. The two major processes involved in protein production are transcription and translation. During, through translation, protein is produced from mRNA. Some pro- teins (called transcription factors) can, transcription and translation processes com- prise of many steps that take significant time to be completed

Awtar, Shorya

317

Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

vary significantly during operations. Previous findings show that the optimal architecture can. For ex- ample, the Toyota Prius powertrain has one driving mode repre- sented by a lever analogy. FIGURE 1. The Toyota Prius Hybrid System in the lever representa- tion; four powertrain components (the

Papalambros, Panos

318

Proceedings of the ASME 2010 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

-28687 EMPLOYING ASSUR TENSEGRITY STRUCTURES METHODS FOR SIMULATING A CATERPILLAR LOCOMOTION Omer Orki School tensegrity structures, that mimics the caterpillar locomotion. Caterpillars are soft bodied animals capable is represented as a 2D tensegrity triad, consists of two cables and a linear actuator which are connected between

Shai, Offer

319

Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

-34686 DOCUMENTATION IN PROGRESS: CHALLENGES WITH REPRESENTING DESIGN PROCESS ONLINE Tiffany Tseng Department of Media and documented their process using Build in Progress over the course of three weeks. We examined students and knowledge with an audience beyond their immediate peers. Prior research on documenting design processes

Yang, Maria

320

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

-47867 IMPULSE RESPONSE OF A GENERALIZED FRACTIONAL SECOND ORDER FILTER Zhuang Jiao Department of Automation, Tsinghua University Beijing 100084, P.R. China CSOIS, ECE Department, Utah State University Logan, UT 84322, USA jiaoz07@ mails.tsinghua.edu.cn YangQuan Chen CSOIS, ECE Department Utah State University Logan, UT

Chen, YangQuan

321

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

or the synchronization of multi-agent systems [1­10]. A typical continuous-time consen- sus model was presented by Olfati consensus problems of continuous-time multi-agent systems with discon- tinuous information transmission [2-48151 MULTI-GROUP CONSENSUS OF HETEROGENEOUS FRACTIONAL-ORDER NONLINEAR AGENTS VIA PINNING CONTROL Wei Sun

Chen, YangQuan

322

Proceedings of the ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference  

E-print Network

to implement a game-theoretic formulation of producer behavior where pro- ducers choose the products an objective such as profit. Economic theory of produc- Address all correspondence to this author. ers they will produce, the attributes of the products, and the prices they will charge in order to maxi- mize

Papalambros, Panos

323

1 Copyright 2012 by ASME Proceedings of the ASME 2012 Summer Heat Transfer Conference  

E-print Network

, a growing interest exists to reduce the diesel engine idling time due to cabin air conditioning (A filtered air; internal and external AC power for hotel loads, block heating, and chilled or frozen of a standard compressor air conditioner. Fuel cell powered systems (FCS) are investigated to replace batteries

Bahrami, Majid

324

115-year-old society knows how to reach young scientists: ASM Young Ambassador Program.  

PubMed

With around 40,000 members in more than 150 countries, American Society for Microbiology (ASM) faces the challenge of meeting very diverse needs of its increasingly international members base. The newly launched ASM Young Ambassador Program seeks to aid the Society in this effort. Equipped with ASM conceptual support and financing, Young Ambassadors (YAs) design and pursue country-tailored approaches to strengthen the Society's ties with local microbiological communities. In a trans-national setting, the active presence of YAs at important scientific events, such as 16th European Congress on Biotechnology, forges new interactions between ASM and sister societies. The paper presents an overview of the Young Ambassadors-driven initiatives at both global and country levels, and explores the topic of how early-career scientists can contribute to science diplomacy and international relations. PMID:25449541

Karczewska-Golec, Joanna

2014-11-10

325

Harmonic engine  

DOEpatents

A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine preferably includes harmonic oscillator valves capable of oscillating at a resonant frequency for controlling the flow of working fluid into and out of the expander, and also preferably includes a shunt line connecting an expansion chamber of the expander to a buffer chamber of the expander for minimizing pressure variations in the fluidic circuit of the engine. The engine is especially designed to operate with very high temperature input to the expander and very low temperature input to the compressor, to produce very high thermal conversion efficiency.

Bennett, Charles L. (Livermore, CA)

2009-10-20

326

ASM: scaled down active segmented mirror developed to simulate a segmented primary mirror  

NASA Astrophysics Data System (ADS)

The Active Segmented Mirror is a key subsystem of the Active Phasing Experiment. The size of the ASM is 154 mm in diameter. It will be used to test new types of phasing sensors recently developed within the ELT design study supported by the European Union. To our knowledge it is the first time that such miniature active optics composed of hexagonal segments having 3 degrees of freedom with a resolution of the order of a few nanometers and a range of several micrometers is manufactured. The ASM is composed of 61 hexagonal segments called "modules". Each module is assembled, glued and integrated from standard (piezo-actuators) and custom-made (mirrors, mechanics) parts procured from industries. The ASM has been designed and integrated at the European Southern Observatory. Specifications, designs, assembly tools, hand work skills, electronics, software, control algorithms and test procedures are the field of competences required to obtain in the end a "plug and play" product. The concept of the ASM is tested and validated by a prototype version composed of 7 modules equivalent of the central area of the ASM itself. The design, integration and results of the ASM tests are presented.

Dupuy, Christophe; Frank, Christoph; Gont, Frdric; Araujo Hauck, Constanza; Brast, Roland; Esteves, Regina; Nylund, Matti; Sedghi, Babak; Derie, Frdric

2006-06-01

327

Engineering Engineering  

E-print Network

Director, MESA Fabrication Sandia National Laboratories EE External Advisory Council CURRENT MEMBERS #12. Section Manager National Systems Division General Dynamics C4 Systems Bernadette Buddington Manager Radar Engineering, please visit us online at www.fulton.asu.edu. THE DEPARTMENT OF ELECTRICAL ENGINEERING ANNUAL

Zhang, Junshan

328

Integrated use of design aspects of new ASME pressure vessel code with requalification aspects of the ASME High Pressure Systems Standard  

SciTech Connect

This paper implements various procedures in the design articles of the proposed ASME BPV Section VIII, Division 3 to re-evaluate the compound shell of a 15 year old large hot isostatic high pressure vessel. The analysis then is subjected to the requalification procedures of the ASME High Pressure Systems Standard (HPS-1994) to create an updated periodic examination program. The purpose of the paper is to show how the two codes mesh for either new or existing vessels to provide rational guidance for obtaining optimum cyclic service performance.

Fryer, D.M. [High Pressure Engineering and Safety, Fairview, PA (United States); Aggarwal, M.C. [Gannon Univ., Erie, PA (United States). Mechanical Engineering Dept.

1996-12-01

329

1 Copyright 2007 by ASME Proceedings of ICEF07  

E-print Network

-TIME, SELF-LEARNING OPTIMIZATION OF DIESEL ENGINE CALIBRATION Andreas A. Malikopoulos Dennis N. Assanis time. This paper examines real-time, self-learning calibration of a diesel engine with respect to two promising simulation-based results are included. Keywords: diesel engine calibration, engine management

Papalambros, Panos

330

Compressor bleed cooling fluid feed system  

DOEpatents

A compressor bleed cooling fluid feed system for a turbine engine for directing cooling fluids from a compressor to a turbine airfoil cooling system to supply cooling fluids to one or more airfoils of a rotor assembly is disclosed. The compressor bleed cooling fluid feed system may enable cooling fluids to be exhausted from a compressor exhaust plenum through a downstream compressor bleed collection chamber and into the turbine airfoil cooling system. As such, the suction created in the compressor exhaust plenum mitigates boundary layer growth along the inner surface while providing flow of cooling fluids to the turbine airfoils.

Donahoo, Eric E; Ross, Christopher W

2014-11-25

331

Intrinsically irreversible heat engine  

DOEpatents

A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

Wheatley, J.C.; Swift, G.W.; Migliori, A.

1984-01-01

332

Intrinsically irreversible heat engine  

DOEpatents

A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat. 11 figs.

Wheatley, J.C.; Swift, G.W.; Migliori, A.

1984-12-25

333

Intrinsically irreversible heat engine  

DOEpatents

A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. the second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Los Alamos, NM); Migliori, Albert (Santa Fe, NM)

1984-01-01

334

MECHANICAL ENGINEERING GRADUATE PROGRAM Listing of Faculty  

E-print Network

(519) 253-3000 ext. 3886 asobies@uwindsor.ca Research Areas: Internal Combustion Engines, Alternate Fluid Mechanics; Heat Transfer; Combustion; Fuel Cell; Internal Combustion Engine; Environmental Issues; Combustion; Alternative Fuel Engines; Thermal/Fluid Systems; IC Engine Modeling, Emission Measurements #12;

335

Operating temperature effects on nozzle coking in a cottonseed oil fueled diesel engine  

E-print Network

OPERATING TEMPERATURE EFFECTS ON NOZZLE COKING IN A COTTONSEED OIL FUELED DIESEL ENGINE A Thesis CHARLES MICHAEL YARBROUGH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree cf... MASTER OF SCIENCE December 1984 Major Subject: Agricultural Engineering OPERATING TEMPERATURE EFFECTS ON NOZZLE CORING IN A COTTONSEED OIL FUELED DIESEL ENGINE A Thesis by CHARLES MICHAEL YARBROUGH Approved as to style and content by: ayne A. Le...

Yarbrough, Charles Michael

2012-06-07

336

A cycle simulation of coal particle fueled reciprocating internal-combustion engines  

E-print Network

A CYCLE SIMULATION OF COAL PARTICLE FUELED RECIPROCATING INTERNAL-COMBUSTION ENGINES A Thesis by KENNETH HAROLD ROSEGAY Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1982 Major Subject: Mechanical Engineering A CYCLE SIMULATION OF COAL PARTICLE FUELED RECIPROCATING INTERNAL-COMBUSTION ENGINES A Thesis by KENNETH HAROLD ROSEGAY Approved as to style and content by; J. A. Caton...

Rosegay, Kenneth Harold

1982-01-01

337

Stochastic interpenetration of fluids  

SciTech Connect

We describe a spectral approach to the investigation of fluid instability, generalized turbulence, and the interpenetration of fluids across an interface. The technique also applies to a single fluid with large variations in density. Departures of fluctuating velocity components from the local mean are far subsonic, but the mean Mach number can be large. Validity of the description is demonstrated by comparisons with experiments on turbulent mixing due to the late stages of Rayleigh-Taylor instability, when the dynamics become approximately self-similar in response to a constant body force. Generic forms for anisotropic spectral structure are described and used as a basis for deriving spectrally integrated moment equations that can be incorporated into computer codes for scientific and engineering analyses.

Steinkamp, M.J.; Clark, T.T.; Harlow, F.H.

1995-11-01

338

Spacer fluids  

SciTech Connect

This patent describes a method for cementing a wellbore penetrating an earth formation into which a conduit extends, the wellbore having a space occupied by a drilling fluid. It comprises displacing the drilling fluid from the space with a spacer fluid comprising: sulfonated styrene-maleic anhydride copolymer, bentonite, welan gum, surfactant and a weighting agent; and displacing the spacer composition and filling the wellbore space with a settable cement composition.

Wilson, W.N.; Bradshaw, R.D.; Wilton, B.S.; Carpenter, R.B.

1992-05-19

339

Living fluids  

NASA Astrophysics Data System (ADS)

One of the major emerging fields of research of the beginning of this century concerns living fluids. By "living fluids", we mean two major categories of complex fluids: (i) fluids which are essential to life, like blood, and (ii) active fluids made of particles that are able to propel themselves in the suspending fluid by converting a form of their energy into mechanical motion. Studies on active fluids have known a considerable interest since the last decade. Blood might be viewed as an old topic, but the progresses in experimental techniques, analytical concepts and numerics, have contributed nowadays to a dramatic renewal of the interest in this field, with a great potential towards understanding physical and mechanical factors in cardiovascular diseases. These fields have considerably strengthened interdisciplinary research. The series of reviews of this dossier focus on the tremendous recent progress achieved in research on living fluids both from the experimental and theoretical points of views. These reviews present also the major open issues, making of this dossier a unique guide for future research in these fields. This project grew up thanks to the international summer school that we organized on the topic "living fluids" at the IES (Institut d'tudes scientifiques) of Cargse (Corsica) in 2012.

Misbah, Chaouqi; Wagner, Christian

2013-06-01

340

Tension in Fluttering Flags P.M. Moretti, Ph.D., P.E., Mem.ASME  

E-print Network

Tension in Fluttering Flags P.M. Moretti, Ph.D., P.E., Mem.ASME 23rd Oklahoma AIAA/ASME Symposium-dimensional vibratory motion of a fluttering flag is obtained by approximate analysis, using a Computer Algebra System for a typical flag flutter motion, consisting of a traveling wave, growing in amplitude as it progresses towards

341

198 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 12, NO. 2, APRIL 2007 A Globally Stable High-Performance Adaptive  

E-print Network

IEEE/ASME International Con- ference on Advanced Intelligent Mechatronics (AIM'05), Monterey, CA, July198 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 12, NO. 2, APRIL 2007 A Globally Stable High that are designed based on a set of transformed coordinates, the pro- posed saturated controller is carried out

Yao, Bin

342

IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 11, NO. 4, AUGUST 2006 381 Automated Onboard Modeling of Cartridge  

E-print Network

was presented in part at the 2005 IEEE/ASME Conference on Advanced Intelligent Mechatronics (AIM'05). S. LiuIEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 11, NO. 4, AUGUST 2006 381 Automated Onboard Modeling is based on the pressure dynamics of the hydraulic cylinder with the consideration of effects of some un

Yao, Bin

343

Materials Science and Engineering B 117 (2005) 5361 Finite element analysis-based design of a fluid-flow control nano-valve  

E-print Network

of a fluid-flow control nano-valve M. Grujicica,, G. Caoa, B. Pandurangana, W.N. Royb a Department A finite element method-based procedure is developed for the design of molecularly functionalized nano-size devices. The procedure is aimed at the single-walled carbon nano-tubes (SWCNTs) used in the construction

Grujicic, Mica

344

Engineering Engineering  

E-print Network

-sponsored competition to have an autonomous vehicle race through the desert in Oct. 2005. Vision and AI are crucial and constructs autonomous robot soccer teams and competes in national and inter- national competitions under pride in us- ing a systems engineering approach. Contributions from students in CS, ECE, and MAE

Keinan, Alon

345

College of Engineering & Computer Science Civil Engineering Name  

E-print Network

College of Engineering & Computer Science Civil Engineering Name Fall 2010 SUID LaGuardia Community. Fundamentals I (3 or 4) MAE213 MAE251 Thermodynamics (4) MAE251 CIVIL ENGINEERING (41) D=16.00 CIE272 Civil Engineering Analysis 3 CIE274 Civil & Environmental Engr. Syst 3 CIE327/MAE341 Fluid Mechanics 4 CIE331

Mather, Patrick T.

346

College of Engineering & Computer Science Civil Engineering Name  

E-print Network

College of Engineering & Computer Science Civil Engineering Name Fall 2010 SUID Oakton Community 212 ELE231 Elec. Engr. Fundamentals I (3 or 4) MAE251 Thermodynamics (4) CIVIL ENGINEERING (41) D=16.00 CIE272 Civil Engineering Analysis 3 CIE274 Civil & Environmental Engr. Syst 3 CIE327/MAE341 Fluid

Mather, Patrick T.

347

Proceedings of the 1998 ASME energy sources technology conference (ETCE`98)  

SciTech Connect

The approximately 160 papers in these proceedings have been arranged under the following topical sections: (1) Computers in engineering -- Technical databases and applied computing; Workgroup computing; Software process models; Internet computing; (2) Drilling technology -- Coiled tubing technology; Drilling dynamics and drilling systems; Advances in drill bits; Advances in percussion drilling; Testing field and laboratory; Novel/scientific drilling; Advances in drilling fluids; (3) Emerging energy technology -- Spray and combustion; Fuel cells; Flammability and flames; Fuels and engines; Miscellaneous combustion topics; (4) Composite materials design and analysis -- Interaction of cracks, notched strength, and free edge effects in laminated composites; Stress analysis of composites; Material response identification, property alteration, damage detection, and environmental effects; Wave propagation in elastic medium, numerical methods for composites; Process and property characterization of advanced materials; Fatigue degradation, viscoplasticity in composites, and numerical simulation of reinforced concrete structures; Aging, creep, plastic anisotropy, joining of different materials, and time history analysis; Shock fronts in compressible medium; Numerical simulation of propagating fronts and shocks in compressible medium; Computational methods and numerical simulation; Analysis and modeling techniques; (5) Manufacturing and services -- Drilling equipment; Process equipment; Patents and intellectual property; Computational methods in manufacturing; (6) Non-destructive evaluation engineering -- NDE applications: Visual inspections; Material property determination/flaw sizing; (7) Offshore engineering and operations -- Environmental and safety issues in offshore operations; Floating production system; Offshore topside facilities; Offshore facility infrastructure; Offshore structures and pipelines; (8) Pipeline engineering and operations -- Pipeline risk management; Pipeline integrity; Evaluation and rehabilitation; Multiphase flow; Pipeline simulation; Pipeline design and operations; New technology; Erosion and corrosion; (9) Plant engineering and reliability -- Reliability methods; Reliability techniques; (10) Petroleum production technology -- Pipeline risk management; Multiphase flow; Multiphase flow equipment; Drilling fluids and completions; Erosion and corrosion; Multiphase pumping; (11) Tribology -- Manufacturing processes; Land-based gas turbine research; Lubrication, tribo-physics and tribo-chemistry. Papers within scope have been processed separately for inclusion on the database.

NONE

1998-12-31

348

A Survey of Variable Extragalactic Sources with XTE's All Sky Monitor (ASM)  

NASA Technical Reports Server (NTRS)

The original goal of the project was the near real-time detection of AGN utilizing the SSC 3 of the ASM on XTE which does a deep integration on one 100 square degree region of the sky. While the SSC never performed sufficiently well to allow the success of this goal, the work on the project has led to the development of a new analysis method for coded aperture systems which has now been applied to ASM data for mapping regions near clusters of galaxies such as the Perseus Cluster and the Coma Cluster. Publications are in preparation that describe both the new method and the results from mapping clusters of galaxies.

Jernigan, Garrett

1998-01-01

349

Fluid inflation  

SciTech Connect

In this work we present an inflationary mechanism based on fluid dynamics. Starting with the action for a single barotropic perfect fluid, we outline the procedure to calculate the power spectrum and the bispectrum of the curvature perturbation. It is shown that a perfect barotropic fluid naturally gives rise to a non-attractor inflationary universe in which the curvature perturbation is not frozen on super-horizon scales. We show that a scale-invariant power spectrum can be obtained with the local non-Gaussianity parameter f{sub NL} = 5/2.

Chen, X. [Centre for Theoretical Cosmology, DAMTP, University of Cambridge, Cambridge CB3 0WA (United Kingdom); Firouzjahi, H. [School of Astronomy, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Namjoo, M.H. [School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Sasaki, M., E-mail: x.chen@damtp.cam.ac.uk, E-mail: firouz@ipm.ir, E-mail: mh.namjoo@ipm.ir, E-mail: misao@yukawa.kyoto-u.ac.jp [Yukawa Institute for theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

2013-09-01

350

Ocean Engineering Development Team  

E-print Network

the same conditions). 3) To demonstrate a working knowledge of fluid mechanics, naval architecture Focus: Naval Architecture and Submersible Systems Mirela Dalanaj Specialization: Design/Drafting Major: Ocean Engineering, Junior Focus: Naval Architecture and Small Craft Design Jason Gray Specialization

Wood, Stephen L.

351

Fluid Power: A Force for Change  

NSDL National Science Digital Library

Fluid Power: A Force for Change is a 30-minute exploration of the fluid power industry and its positive effects on our current and future society. This program emphasizes current research in fluid power as well as the promise it holds for a rising generation of young engineers looking for exciting and socially-responsible careers. This documentary was produced by the Minnesota Channel of Twin Cities Public Television in cooperation with the National Fluid Power Association (NFPA) and the Center for Compact and Efficient Fluid Power (CCEFP).

Television, Minnesota C.

352

Determination of performance characteristics of a one-cylinder diesel engine modified to burn low-Btu (lignite) gas  

E-print Network

-Btu (Lignite) Gas. (August 1979) James Richard Blacksmith, B. S. , Texas ASM University Chairman of Advisory Committee: Dr. Francis W. Holm An experimental investigation was conducted to deter- mine the dual-fuel performance characteristics of a one...- cylinder diesel engine modified to burn low-Btu gas, such as would be obtained from the underground gasification of lignite. Conventional diesel and dual-fuel engine performance tests were conducted with the engine coupled to a station- ary water...

Blacksmith, James Richard

2012-06-07

353

Fluid Shifts  

NASA Technical Reports Server (NTRS)

INTRODUCTION: Mechanisms responsible for the ocular structural and functional changes that characterize the visual impairment and intracranial pressure (ICP) syndrome (VIIP) are unclear, but hypothesized to be secondary to the cephalad fluid shift experienced in spaceflight. This study will relate the fluid distribution and compartmentalization associated with long-duration spaceflight with VIIP symptoms. We also seek to determine whether the magnitude of fluid shifts during spaceflight, as well as the VIIP-related effects of those shifts, can be predicted preflight with acute hemodynamic manipulations, and also if lower body negative pressure (LBNP) can reverse the VIIP effects. METHODS: Physiologic variables will be examined pre-, in- and post-flight in 10 International Space Station crewmembers including: fluid compartmentalization (D2O and NaBr dilution); interstitial tissue thickness (ultrasound); vascular dimensions and dynamics (ultrasound and MRI (including cerebrospinal fluid pulsatility)); ocular measures (optical coherence tomography, intraocular pressure, ultrasound); and ICP measures (tympanic membrane displacement, otoacoustic emissions). Pre- and post-flight measures will be assessed while upright, supine and during 15 deg head-down tilt (HDT). In-flight measures will occur early and late during 6 or 12 month missions. LBNP will be evaluated as a countermeasure during HDT and during spaceflight. RESULTS: The first two crewmembers are in the preflight testing phase. Preliminary results characterize the acute fluid shifts experienced from upright, to supine and HDT postures (increased stroke volume, jugular dimensions and measures of ICP) which are reversed with 25 millimeters Hg LBNP. DISCUSSION: Initial results indicate that acute cephalad fluid shifts may be related to VIIP symptoms, but also may be reversible by LBNP. The effect of a chronic fluid shift has yet to be evaluated. Learning Objectives: Current spaceflight VIIP research is described, including novel hardware and countermeasures.

Stenger, M. B.; Hargens, A.; Dulchavsky, S.; Ebert, D.; Lee, S.; Laurie, S.; Garcia, K.; Sargsyan, A.; Martin, D.; Lui, J.; Macias, B.; Arbeille, P.; Danielson, R.; Chang, D.; Gunga, H.; Johnston, S.; Westby, C.; Ribeiro, L.; Ploutz-Snyder, R.; Smith, S.

2015-01-01

354

Nonlinear dynamics of three dimensional fluid flow separation  

E-print Network

Flow separation (the detachment of fluid from a no-slip boundary) is a major cause of performance loss in engineering devices, including diffusers, airfoils and jet engines. The systematic study of flow separation dates ...

Surana, Amit

2007-01-01

355

Geothermal Reservoir Evaluation Considering Fluid Adsorption  

E-print Network

SGP-"R- 68 Geothermal Reservoir Evaluation Considering Fluid Adsorption and Composition Michael J. Economides September, 1983 Financial support was provided through the Stanford Geothermal Program Contract No Geothermal Program Interdisciplinary Research in Engineering and Earth Sciences STANFORD UNIVERSITY Stanford

Stanford University

356

Rotary engine  

Microsoft Academic Search

The rotary engine has a circumferential main chamber and at least one smaller combustion chamber spaced from the main chamber. The rotor includes a plurality of radially-projecting sealing members in spaced relationship thereabout for maintaining a fluid-sealed condition along a single fixed transverse strip area on the interior surface of the main chamber. A single radially-oriented axially-parallel piston vane is

1985-01-01

357

ITER's Tokamak Cooling Water System and the the Use of ASME Codes to Comply with French Regulations of Nuclear Pressure Equipment  

SciTech Connect

During inductive plasma operation of ITER, fusion power will reach 500 MW with an energy multiplication factor of 10. The heat will be transferred by the Tokamak Cooling Water System (TCWS) to the environment using the secondary cooling system. Plasma operations are inherently safe even under the most severe postulated accident condition a large, in-vessel break that results in a loss-of-coolant accident. A functioning cooling water system is not required to ensure safe shutdown. Even though ITER is inherently safe, TCWS equipment (e.g., heat exchangers, piping, pressurizers) are classified as safety important components. This is because the water is predicted to contain low-levels of radionuclides (e.g., activated corrosion products, tritium) with activity levels high enough to require the design of components to be in accordance with French regulations for nuclear pressure equipment, i.e., the French Order dated 12 December 2005 (ESPN). ESPN has extended the practical application of the methodology established by the Pressure Equipment Directive (97/23/EC) to nuclear pressure equipment, under French Decree 99-1046 dated 13 December 1999, and Order dated 21 December 1999 (ESP). ASME codes and supplementary analyses (e.g., Failure Modes and Effects Analysis) will be used to demonstrate that the TCWS equipment meets these essential safety requirements. TCWS is being designed to provide not only cooling, with a capacity of approximately 1 GW energy removal, but also elevated temperature baking of first-wall/blanket, vacuum vessel, and divertor. Additional TCWS functions include chemical control of water, draining and drying for maintenance, and facilitation of leak detection/localization. The TCWS interfaces with the majority of ITER systems, including the secondary cooling system. U.S. ITER is responsible for design, engineering, and procurement of the TCWS with industry support from an Engineering Services Organization (ESO) (AREVA Federal Services, with support from Northrop Grumman, and OneCIS). ITER International Organization (ITER-IO) is responsible for design oversight and equipment installation in Cadarache, France. TCWS equipment will be fabricated using ASME design codes with quality assurance and oversight by an Agreed Notified Body (approved by the French regulator) that will ensure regulatory compliance. This paper describes the TCWS design and how U.S. ITER and fabricators will use ASME codes to comply with EU Directives and French Orders and Decrees.

Berry, Jan [ORNL] [ORNL; Ferrada, Juan J [ORNL] [ORNL; Curd, Warren [ITER Organization, Saint Paul Lez Durance, France] [ITER Organization, Saint Paul Lez Durance, France; Dell Orco, Dr. Giovanni [ITER Organization, Saint Paul Lez Durance, France] [ITER Organization, Saint Paul Lez Durance, France; Barabash, Vladimir [ITER Organization, Saint Paul Lez Durance, France] [ITER Organization, Saint Paul Lez Durance, France; Kim, Seokho H [ORNL] [ORNL

2011-01-01

358

Engine end for a downhole hydraulically actuated pump assembly  

Microsoft Academic Search

This patent describes a hydraulically actuated downhole pump assembly for producing a well when power fluid is pumped thereto whereupon produced fluid admixed with spent power fluid is returned therefrom. It comprises: the engine end has an engine piston connected to actuate the pump end; the engine end has an annular outer housing, the annular valve element moves axially between

Roeder

1992-01-01

359

ACC03-ASME0018 Controller Design for Flexible Systems with Friction  

E-print Network

ACC03-ASME0018 Controller Design for Flexible Systems with Friction: Linear Programming Approach of friction is presented. A linear program- ming technique for finding an optimal control of linear flexible systems is extended to frictional systems. A floating oscillator is used in the development, where

Singh, Tarunraj

360

PHASE I MATERIALS PROPERTY DATABASE DEVELOPMENT FOR ASME CODES AND STANDARDS  

SciTech Connect

To support the ASME Boiler and Pressure Vessel Codes and Standard (BPVC) in modern information era, development of a web-based materials property database is initiated under the supervision of ASME Committee on Materials. To achieve efficiency, the project heavily draws upon experience from development of the Gen IV Materials Handbook and the Nuclear System Materials Handbook. The effort is divided into two phases. Phase I is planned to deliver a materials data file warehouse that offers a depository for various files containing raw data and background information, and Phase II will provide a relational digital database that provides advanced features facilitating digital data processing and management. Population of the database will start with materials property data for nuclear applications and expand to data covering the entire ASME Code and Standards including the piping codes as the database structure is continuously optimized. The ultimate goal of the effort is to establish a sound cyber infrastructure that support ASME Codes and Standards development and maintenance.

Ren, Weiju [ORNL; Lin, Lianshan [ORNL

2013-01-01

361

1 Copyright 2003 by ASME IMPROVING LIFE CYCLE ASSESSMENT BY INCLUDING SPATIAL, DYNAMIC AND PLACE-  

E-print Network

1 Copyright © 2003 by ASME IMPROVING LIFE CYCLE ASSESSMENT BY INCLUDING SPATIAL, DYNAMIC AND PLACE Drawing from the substantial body of literature on life cycle assessment / analysis (LCA), the article models is suggested as a means of improving the impact assessment phase of LCA. Keywords: Life Cycle

362

An ASM semantics for the communication layer in Rational Rose Real-Time  

E-print Network

-RT capsule signature in ASM static domain Capsule static interface: Capsule P(Port) static stateMachine: Capsule StateMachine currMessage: Capsule Message static domain Port static capsule: Port Capsule static controller: Capsule Controller internalQueue: Controller ? Priority Message incoming

Leue, Stefan

363

An ASM Specification of C# Threads and the .NET Memory Model  

Microsoft Academic Search

We present a high-level ASM model of C# threads and the .NET memory model. We focus on purely managed, fully portable threading features of C#. The sequential model interleaves the compu- tation steps of the currently running threads and is suitable for unipro- cessors. The parallel model addresses problems of true concurrency on multiprocessor systems. The models provide a sound

Robert F. Strk; Egon Brger

2004-01-01

364

1 Copyright 1999 by ASME MULTI-PHASE CFD ANALYSIS OF NATURAL AND VENTILATED CAVITATION  

E-print Network

1 Copyright © 1999 by ASME MULTI-PHASE CFD ANALYSIS OF NATURAL AND VENTILATED CAVITATION ABOUT and ventilated cavitation. The method employs an implicit, dual-time, pre-conditioned, multi-phase Navier. Results are presented for steady-state and transient axisymmetric flows with natural and ventilated

Kunz, Robert Francis

365

2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM)  

E-print Network

2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) Wollongong, Australia, July 9-12, 2013 Stochastic ant agent for priority-based coverage John Oyekanl, Dongbing Gu2, Huosheng Hu 2 Ahstract- In this paper, we present a stochastic ant agent algorithm that provides priority-based

Hu, Huosheng

366

2009 ASME WIND ENERGY SYMPOSIUM Static and Fatigue Testing of Thick Adhesive Joints for  

E-print Network

1 2009 ASME WIND ENERGY SYMPOSIUM Static and Fatigue Testing of Thick Adhesive Joints for Wind for the static and fatigue strengths of thick adhesive joint specimens which are representative of blade joints conditions include both tension and reversed loading. The four geometries are compared as to static strength

367

1 Copyright 2001 by ASME Enzyme based biosensors suffer from loss of activity and sen-  

E-print Network

1 Copyright 2001 by ASME ABSTRACT Enzyme based biosensors suffer from loss of activity and sen of the sensor. These proteins affect sensor signal stability and disrupt enzyme function. Thus, one fruitful way in contact with the enzyme based biosensor. Further, the removal of free protein from biological solution

Liepmann, Dorian

368

1 Copyright 2007 by ASME A ROLE OF UNSUPERVISED CLUSTERING FOR INTELLIGENT FAULT DIAGNOSIS  

E-print Network

1 Copyright © 2007 by ASME A ROLE OF UNSUPERVISED CLUSTERING FOR INTELLIGENT FAULT DIAGNOSIS Datta, we have taken the example of an intelligent decision making process in the field of fault diagnosis attempt to use these models in the field of health monitoring as tool for fault diagnosis and state

Mavroidis, Constantinos

369

AN IBM 7090 FORTRAN PROGRAM FOR ASME UNFIRED PRESSURE VESSEL DESIGN AND PRELIMINARY COST ESTIMATION  

Microsoft Academic Search

An IBM 7090 FORTRAN program was written for the preliminary design and ; cost estimation of unfired pressure vessels with or without a jacket. Both ; vessel and jacket designs conform to the 1959 ASME Boiler and Pressure Vessel ; Code, Section VIII, Unfired Pressure Vessels. Vessels and jackets from 5 in. ; pipe through 84 in. o.d. and 1\\/4

C. E. Prince; R. P. Milford

1962-01-01

370

1 Copyright 2014 by ASME A SPATIAL GEOMETRY APPROACH TO VARIABLE CROSS-SECTION RAIL  

E-print Network

1 Copyright © 2014 by ASME A SPATIAL GEOMETRY APPROACH TO VARIABLE CROSS-SECTION RAIL MODELING ABSTRACT Contact between the wheel and rail can have a significant effect on the dynamics of vehicle/track interaction models. Many existing rail surface models rely on curve based geometry which may lead to some

Barkan, Christopher P.L.

371

1 Copyright 2014 by ASME Proceedings of the 2014 Joint Rail Conference  

E-print Network

1 Copyright © 2014 by ASME Proceedings of the 2014 Joint Rail Conference JRC2014 April 2-4, 2014, Colorado Springs, CO, USA JRC2014-3787 ANALYSIS OF TRENDS IN COMMUTER RAIL ENERGY EFFICIENCY Giovanni C. Di at Urbana-Champaign Urbana, Illinois, USA ABSTRACT Commuter rail systems are widely regarded as an effective

Barkan, Christopher P.L.

372

1 Copyright 2014 by ASME LABORATORY AND FIELD INVESTIGATION OF THE RAIL PAD ASSEMBLY  

E-print Network

1 Copyright © 2014 by ASME LABORATORY AND FIELD INVESTIGATION OF THE RAIL PAD ASSEMBLY MECHANISTIC-speed rail service worldwide, advancements in concrete crosstie fastening systems are required. A mechanistic reducing unscheduled maintenance, track outages, and unplanned additional costs. Improvements on the rail

Barkan, Christopher P.L.

373

1 Copyright 2004 by ASME ANALYTICAL MODEL DEVELOPMENT AND MODEL REDUCTION FOR  

E-print Network

1 Copyright © 2004 by ASME ANALYTICAL MODEL DEVELOPMENT AND MODEL REDUCTION FOR ELECTROMECHANICAL) and includes essential nonlinearities such as gear backlashes, Coulomb frictions, and disk gap clearance in the development of the BBW system consisting of brushless DC motor, planetary gear train, roller screw drive

Yao, Bin

374

1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED.  

E-print Network

NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2. ALL WELDS SHALL BE DYE PENETRANT INSPECTED. NO RADIOGRAPHY REQUIRED. 3. MATERIAL CERTIFICATIONS HOSE W/TUBING ENDS, 13.5 FACE-TO-FACE N/A 3 1 swagelok 1.0 pipe weld connector SS - 316L SWAGELOK PIPE

McDonald, Kirk

375

1 Copyright 2007 by ASME SIMULATION OF OFFSHORE WIND TURBINE RESPONSE FOR  

E-print Network

in the design of offshore wind turbines against ultimate limit states, and a recent draft [1] of design1 Copyright © 2007 by ASME SIMULATION OF OFFSHORE WIND TURBINE RESPONSE FOR EXTREME LIMIT STATES P loads for an offshore wind turbine using simulation, statistical extrapolation is the method of choice

Manuel, Lance

376

1 Copyright 2001 by ASME Planar Cable-Direct-Driven Robots,  

E-print Network

1 Copyright © 2001 by ASME Planar Cable-Direct-Driven Robots, Part II: Dynamics and Control Paolo Conferences September 9-12, 2001, Pittsburgh, PA DETC2001/DAC-21146 PLANAR CABLE-DIRECT-DRIVEN ROBOTS, PART II) and the rotational freedoms are provided by a serial wrist mechanism. While the companion paper presents kinematics

Williams II, Robert L.

377

GUIDELINE FOR FLUID MODELING OF ATMOSPHERIC DIFFUSION  

EPA Science Inventory

The fundamental principles for fluid modeling of flow and dispersion of pollutants in the atmospheric boundary layer are reviewed. The usefulness of fluid models are evaluated from both scientific and engineering viewpoints. Because many detailed decisions must be made during the...

378

1 Copyright 2005 by ASME Proceedings of IMECE2005  

E-print Network

. Cameron Department of Mechanical and Nuclear Engineering The Pennsylvania State University 318 Leonhard Building University Park, PA 16802 Sean Brennan Department of Mechanical and Nuclear Engineering, and most often strike when a person is at the peak of both their professional and personal/family life

Brennan, Sean

379

1 Copyright 2003 by ASME Proceedings of DETC'03  

E-print Network

to efficiently evaluate the performance robustness and percentile performance in the proposed formulation paradigm, mean and variance of system performance are evaluated for assessing the design objective Sudjianto V-Engine Engineering Analytical Powertrain Ford Motor Company POEE Bld., FK143 (Pillar M13), MD 65

Chen, Wei

380

1 Copyright 2005 by ASME Proceedings of ICMM2005  

E-print Network

) Reduction in required DNA sample to that of the genomic material in a single cell, (c) To localize OF NANOCHANNELS FOR SINGLE PHASE LIQUID FLOW Jeffrey L. Perry, jlp2389@rit.edu Microsystems Engineering Rochester Engineering Rochester Institute of Technology Rochester, NY 14623 ABSTRACT The topic of single phase liquid

Kandlikar, Satish

381

1 Copyright 2005 by ASME Proceedings of WTC2005  

E-print Network

PLASTICITY Y.F. Gao Division of Engineering, Brown University, Providence, RI 02912 ABSTRACT Rough surface engineering materials are unavoidably rough, and contain geometric irregularities (asperities) with feature sizes ranging from micrometers to nanometers.1 Starting from a fractal description of surface roughness

Gao, Yanfei

382

SURGICAL ROBOTICS UNDER FLUID POWER  

E-print Network

SURGICAL ROBOTICS UNDER FLUID POWER Devin R. Berg Mechanical Engineering, University of Minnesota less invasive and more complicated. 2 #12;Use of robotics in surgery is continuing to become more prominent. 3 #12;Use of robotics in surgery is continuing to become more prominent. 4 Vanderbilt University

Wu, Mingshen

383

Geophysical fluid dynamics  

NASA Technical Reports Server (NTRS)

Systematic scaling or dimensional analysis reveals that certain scales of geophysical fluid flows (such as stellar, ocean, and planetary atmosphere circulations) can be accurately modeled in the laboratory using a procedure which differs from conventional engineering modeling. Rather than building a model to obtain numbers for a specific design problem, the relative effects of the significant forces are systematically varied in an attempt to deepen understanding of the effects of these forces. Topics covered include: (1) modeling a large-scale planetary atmospheric flow in a rotating cylindrical annulus; (2) achieving a radial dielectric body force; (3) spherical geophysical fluid dynamics experiments for Spacelab flights; (4) measuring flow and temperature; and (5) the possible effect of rotational or precessional disturbances on the flow in the rotating spherical containers.

Fowlis, W. W.

1981-01-01

384

Fluid Shifts  

NASA Technical Reports Server (NTRS)

NASA is focusing on long-duration missions on the International Space Station (ISS) and future exploration-class missions beyond low Earth orbit. Visual acuity changes observed after short-duration missions were largely transient, but more than 30% of ISS astronauts experience more profound, chronic changes with objective structural and functional findings such as papilledema and choroidal folds. Globe flattening, optic nerve sheath dilation, and optic nerve tortuosity also are apparent. This pattern is referred to as the visual impairment and intracranial pressure (VIIP) syndrome. VIIP signs and symptoms, as well as postflight lumbar puncture data, suggest that elevated intracranial pressure (ICP) may be associated with the space flight-induced cephalad fluid shifts, but this hypothesis has not been tested. The purpose of this study is to characterize fluid distribution and compartmentalization associated with long-duration space flight, and to correlate these findings with vision changes and other elements of the VIIP syndrome. We also seek to determine whether the magnitude of fluid shifts during space flight, as well as the VIIP-related effects of those shifts, is predicted by the crewmember's pre-flight condition and responses to acute hemodynamic manipulations (such as head-down tilt). Lastly, we will evaluate the patterns of fluid distribution in ISS astronauts during acute reversal of fluid shifts through application of lower body negative pressure (LBNP) interventions to characterize and explain general and individual responses. We will examine a variety of physiologic variables in 10 long-duration ISS crewmembers using the test conditions and timeline presented in the Figure below. Measures include: (1) fluid compartmentalization (total body water by D2O, extracellular fluid by NaBr, intracellular fluid by calculation, plasma volume by CO rebreathe, interstitial fluid by calculation); (2) forehead/eyelids, tibia, calcaneus tissue thickness (by ultrasound); (3) vascular dimensions by ultrasound (jugular veins, cerebral and carotid arteries, vertebral arteries and veins, portal vein); (4) vascular dynamics by MRI (head/neck blood flow, cerebrospinal fluid pulsatility); (5) ocular measures (optical coherence tomography, intraocular pressure, 2-dimensional ultrasound including optic nerve sheath diameter, globe flattening, and retina-choroid thickness, Doppler ultrasound of ophthalmic and retinal arteries, and veins); (6) cardiac variables by ultrasound (inferior vena cava, tricuspid flow and tissue Doppler, pulmonic valve, stroke volume, right heart dimensions and function, four-chamber views); and (7) ICP measures (tympanic membrane displacement, distortion-product otoacoustic emissions, and ICP calculated by MRI). On the ground, acute head-down tilt will induce cephalad fluid shifts, whereas LBNP will oppose these shifts. Controlled Mueller maneuvers will manipulate cardiovascular variables. Through interventions applied before, during, and after flight, we intend to fully evaluate the relationship between fluid shifts and the VIIP syndrome. This study has been selected for flight implementation and is one of the candidate investigations being considered for the one year mission.

Stenger, Michael; Hargens, A.; Dulchavsky, S.; Ebert, D.; Lee, S.; Sargsyan, A.; Martin, D.; Lui, J.; Macias, B.; Arbeille, P.; Platts, S.

2014-01-01

385

Effect of thin condensate films of a metal working fluid of an electric propulsion engine on the integral optical coefficients of a spacecraft's thermal control coating  

NASA Astrophysics Data System (ADS)

Materials on experimental studies to determine the effect of thin condensate films of cesium (used as a model working medium for electric propulsion engines and some spacecraft power sources) on integral optical coefficients of spacecraft thermal control coatings are presented. A technique modified by the author and employing the regular thermal regime of a thin metal plate is used. Measurement results demonstrate that films with thicknesses of 100-1000 can seriously degrade the integral optical coefficients of thermal control coatings and thus disturb the heat balance of some spacecraft systems.

Chirov, A. A.

2014-05-01

386

Harmonic engine  

DOEpatents

An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into of the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. Upon releasing the inlet valve the inlet valve head undergoes a single oscillation past the equilibrium positio to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. Protrusions carried either by the inlet valve head or piston head are used to bump open the inlet valve from the closed position and initiate the single oscillation of the inlet valve head, and protrusions carried either by the outlet valve head or piston head are used to close the outlet valve ahead of the bump opening of the inlet valve.

Bennett, Charles L.; Sewall, Noel; Boroa, Carl

2014-08-19

387

Rotary engine and method  

Microsoft Academic Search

This paper describes a rotary engine. It comprises: an engine block, the block defining an internal rotor cavity, a rotor, the rotor eccentrically positioned within the cavity, the block defining a combustion chamber, the combustion chamber positioned exteriorly of the rotor cavity and in fluid communication therewith, a pair of pistons, the pistons affixed to each other and slidably mounted

Overman

1991-01-01

388

Engineering Electrical &  

E-print Network

Computer Engineering Electrical & Electronic Engineering Mechatronics Engineering Mechanical Engineering Civil Engineering Natural Resources Engineering Forest Engineering Chemical & Process Engineering ELECTIVE 2 Required Engineering Intermediate Year 2011 Eight Required Courses Chart: 120 points College

Hickman, Mark

389

Engineering Electrical &  

E-print Network

Computer Engineering Electrical & Electronic Engineering Mechatronics Engineering Mechanical Engineering Civil Engineering Natural Resources Engineering Forest Engineering Chemical & Process Engineering ELECTIVE 2 Required Engineering Intermediate Year 2012 Eight Required Courses Chart: 120 points College

Hickman, Mark

390

1 Copyright 2002 by ASME Proceedings of DETC'02  

E-print Network

. Keywords: biomimicry, analogy, function, remanufacture NOMENCLATURE Biomimetic design: Design that, fully). While many cases of biomimicry exist, several started with an interesting biological phenomenon analogies given an engineering problem as the starting point. Several other instances of biomimicry copy

Shu, Lily H.

391

Copyright 2003 by ASME1 Proceedings of IMECE2003  

E-print Network

Gowrisankaran Department of Mechanical Engineering University of Maryland College Park, MD ABSTRACT The use% and the total impulse can be increased by 73% using a gradient architecture that varies linearly from

Maryland at College Park, University of

392

Magnetorheological fluids  

Microsoft Academic Search

Magnetorheological fluids have a viscosity which can be controlled by the application of a magnetic field. Usually they are dispersions of micronic magnetic particles in a carrier liquid. We shall present the basic phenomena related to the interplay between interparticle magnetic forces which are responsible for the gelation of the suspension and hydrodynamic forces which will break this gel and

G. Bossis; S. Lacis; A. Meunier; O. Volkova

2002-01-01

393

R fluids  

E-print Network

A theory of collisionless fluids is developed in a unified picture, where nonrotating figures with anisotropic random velocity component distributions and rotating figures with isotropic random velocity component distributions, make adjoints configurations to the same system. R fluids are defined and mean and rms angular velocities and mean and rms tangential velocity components are expressed, by weighting on the moment of inertia and the mass, respectively. The definition of figure rotation is extended to R fluids. The generalized tensor virial equations are formulated for R fluids and further attention is devoted to axisymmetric configurations where, for selected coordinate axes, a variation in figure rotation has to be counterbalanced by a variation in anisotropy excess and vice versa. A microscopical analysis of systematic and random motions is performed under a few general hypotheses, by reversing the sign of tangential or axial velocity components of an assigned fraction of particles, leaving the distribution function and other parameters unchanged (Meza 2002). The application of the reversion process to tangential velocity components, implies the conversion of random motion rotation kinetic energy into systematic motion rotation kinetic energy. The application of the reversion process to axial velocity components, implies the conversion of random motion translation kinetic energy into systematic motion translation kinetic energy, and the loss related to a change of reference frame is expressed in terms of systematic (imaginary) motion rotation kinetic energy. A procedure is sketched for deriving the spin parameter distribution (including imaginary rotation) from a sample of observed or simulated large-scale collisionless fluids i.e. galaxies and galaxy clusters.

R. Caimmi

2007-10-20

394

IDENTIFICATION OF FLUID SYSTEMS USING GENETIC PROGRAMMING  

E-print Network

], for engineering design [3]. This paper illustrates the effectiveness of the genetic programming paradigmIDENTIFICATION OF FLUID SYSTEMS USING GENETIC PROGRAMMING Andrew H. Watson and Ian C. Parmee Plymouth Engineering Design Centre, University of Plymouth, PL4 8AA, UK email: awatson

Fernandez, Thomas

395

Engineering Engineering Education  

E-print Network

E School of Engineering Engineering Education in a University Setting 292 Degree Programs in Engineering 294 Special Programs 296 Honors 298 Academic Regulations 300 Courses of Study 305 Engineering of Engineering is the largest and oldest private engineering school in the South. Classes offering engineering

Simaan, Nabil

396

1 Copyright 2012 by ASME Proceedings of the 2012 3rd ASME Micro/Nanoscale Heat & Mass Transfer International Conference  

E-print Network

and optical sensor in a single microchannel, in which the fluid acts as a medium which carries analytes International Conference MNHMT1012 March 3-6, 2012, Atlanta, Georgia, USA MNHMT2012-75174 NANO FILTRATION functions in sensing and nano filtration was proposed. Aminoglycosides were considered as the analyte

Guo, Zhixiong "James"

397

1 Copyright 2012 by ASME Proceedings of the ASME 2012 6th International Conference on Energy Sustainability &  

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Sustainability & 10th Fuel Cell Science, Engineering and Technology Conference ESFuelCell2012 July 23-26, 2012 industrial processes, boilers in hospitals and hotels, commercial kitchens, etc., can be used as the input

Bahrami, Majid

398

Three-Dimensional Computational Fluid Dynamics  

SciTech Connect

Computational fluid dynamics (CFD) is one discipline falling under the broad heading of computer-aided engineering (CAE). CAE, together with computer-aided design (CAD) and computer-aided manufacturing (CAM), comprise a mathematical-based approach to engineering product and process design, analysis and fabrication. In this overview of CFD for the design engineer, our purposes are three-fold: (1) to define the scope of CFD and motivate its utility for engineering, (2) to provide a basic technical foundation for CFD, and (3) to convey how CFD is incorporated into engineering product and process design.

Haworth, D.C.; O'Rourke, P.J.; Ranganathan, R.

1998-09-01

399

Proceedings of IMECE'03 2003 ASME International Mechanical Engineering Congress & Exposition  

E-print Network

constant, 8.314 J/molK T temperature, K q" waste heat per unit active area, W/cm2 k thermal conductivity, W to provide adequate moisture to maintain electrolyte conductivity. For a review of PEFC operation and water, if there is excess water not completely removed by cathode reactant flow, it accumulates as liquid, blocking pores

400

Proceedings of IMECE 2006 2006 ASME International Mechanical Engineering Congress and Expo  

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enhance- ments (up to 40%) in thermal conductivity compared with the base liquid [5], strong temperature of the important phys- ical phenomena necessary for the determination of effective thermal conductivity bounds. Nomenclature a = basic cell half side, m dp = particle diameter, m k = thermal conductivity, W

Bahrami, Majid

401

Proceedings of IMECE: 2004 ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND RD&D EXPO  

E-print Network

]. On the macroscale, titanium's biocompatibility has been well exploited in the biomedical field for dental implants for bioMEMS applications. Titanium is chosen mainly for its excellent biocompatibility and mechanical, California, USA, November 13-19, 2004 IMECE 2004-62136 TITANIUM BULK MICROMACHINING FOR BIOMEMS APPLICATIONS

MacDonald, Noel C.

402

1 Copyright 2011 by ASME Proceedings of the 2011 International Design Engineering Technical Conferences and  

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, Washington, DC, USA DETC2011-47664 USING ECONOMIC INPUT-OUTPUT LIFE CYCLE ASSESSMENT TO GUIDE SUSTAINABLE cycle implications of design choices using traditional process-based life cycle assessment (LCA of economic input-output life cycle assessment (EIO-LCA) as a tool to support sustainable design by helping

Michalek, Jeremy J.

403

Proceedings of IMECE2007 2007 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

for various thermal therapy of tumors for applications like Laser Induced Hyperthermia [1], Laser Interstitial are recently being preferred for these applications [4]. The ability to produce highly localized heating be sufficient to kill cancer cells. Thus there is no general consensus in the literature about the exact extent

Guo, Zhixiong "James"

404

Exploiting the ASM method within the Model-driven Engineering paradigm  

Microsoft Academic Search

an abstract notation, so separating the abstract syntax and semantics of the language constructs from their dierent,concrete notations. Although the foundation constituents of the MDE approach are still evolving, some implementations of the MDE principles can be found in environments like the OMG MDA (Model Driven Architecture) [6], Model-integrated Computing (MIC) [7], Software Factories and their Microsoft DSL Tools [1],

Angelo Gargantini; Elvinia Riccobene; Patrizia Scandurra

2007-01-01

405

Proceedings of IDETC/CIE 2006 ASME 2006 International Design Engineering Technical Conferences &  

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Realization Laboratory & Microelectronics and Emerging Technologies Thermal Laboratory The G.W. Woodruff and materials. Corresponding Author: janet.allen@me.gatech.edu 1 Flanders, L.C., http://www.lcv.be/nl/nieuwe_ontw.asp

406

Proceedings of IMECE 2004 2004 ASME International Mechanical Engineering Congress and RD&D Expo  

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. The telerobotic system acts as an extended tool, leveraging the human's skill set and decision- Figure 1. TOOL-MEDIATED FORCE FEEDBACK. making ability into an environment that humans normally cannot reach. In order. The human explores the environment by moving the tool around, using his or her highly developed sense

Kuchenbecker, Katherine J.

407

Proceedings of IMECE2005 2005 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

coupler with frustrated TIR, coupler devices include side-polished fiber couplers9 and fiber tapers.10. The advances in micro/nano-fabrication techniques have made it feasible to consider WGM optical resonators

Guo, Zhixiong "James"

408

Proceedings of IMECE2005 2005 ASME International Mechanical Engineering Congress and Exposition  

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in the exposure process, thermal lithography is limited by thermal diffusion. A traditional metal-glass photomask-micron fea- tures. Contact thermal lithography is a new method of pattern aarons@mit.edu Oxide Buffer Layer Silicon Wafer Glass Mask Substrate Thermoresist Metal Feature Crosslinked Region Visible Radiation Figure

Chen, Gang

409

1 Copyright 2011 by ASME Proceedings of the 2011 International Mechanical Engineering Congress and Exposition  

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in gas turbine systems. Unsteady oscillations and turbulent flow characteristics especially near the endwall surfaces generate the much needed heat transfer enhancement that is usually from the walls regarding many flow characteristics, including particle streamlines, as well as total pressure, turbulent

Camci, Cengiz

410

Presented at: 4th ASM International Surface Engineering Congress & 19th  

E-print Network

), protective clothing, space mirrors, and precursor platforms or scaffolds for the nanotube/ nanowire synthesis, such as MEMs, lab-on-a-chip sensors/detectors, structural elements in artificial organs and arteries

Azad, Abdul-Majeed

411

Proceedings of IMECE 2007 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

on the operational limits of heat pipes. 1 Background For aerodynamic reasons hypersonic vehicles require sharp November 11-15, 2007, Seattle, USA IMECE2007-42397 METALLIC STRUCTURAL HEAT PIPES AS SHARP LEADING EDGES edges on hypersonic vehicles experience very large heating loads and consequent high temperatures. One

Wadley, Haydn

412

Proceedings of IMECE'03 2003 ASME International Mechanical Engineering Congress & Exposition  

E-print Network

, such as the T-type [1], L-shaped [2], £ Address all correspondence to this author. serpentine pipe [3], flow-change liquid micropumps. Pressure distur- bances from side channels have also been added to microchannel flows

MacDonald, Noel C.

413

Proceedings of The ASME 2012 11th Biennial Conference On Engineering Systems& Design And Analysis  

E-print Network

properties. Compared with other oxide refrac- tories, SiC based refractories exhibit a high abrasion-carbide-based refractories (SiC) are materials that are extensively used in extreme conditions, thanks to their physico-chemical-resistant strength, a high thermal shock resistance, a high thermal con- ductivity and a better resistance

414

Proceedings of IMECE 2005 2005 ASME International Mechanical Engineering Congress and Exposition  

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stress-dependence in- herent to magnetic transducer materials operating in high drive regimes. The model char- acterizing the stress-dependent dynamics of high performance actuators and sensors. The direct on the fixed input stress. Figure 2 illustrates the manner through which application of an applied compressive

415

Proceedings of MSEC2006 2006 ASME International Conference on Manufacturing Science and Engineering  

E-print Network

process LSP can produce high magnitude compressive residual stresses of more than 1 mm in depth, four) is an innovative process which imparts compressive residual stresses in the processed surface of metallic parts residual stresses beneath the treated surface of metallic materials, mechanically produced by high

Yao, Y. Lawrence

416

Proceedings of IMECE2006 2006 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

with thin films. Compressive stresses may initiate film buckling while highly tensile stresses can result drastically from highly compressive to highly tensile and back to highly compressive stress within of polysilicon at 625°C and 588°C the stress in the wafers is 230 MPa compressive (stdev = 1.2 MPa) and 340 MPa

White, Robert D.

417

Proceedings of IMECE2006 2006 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

management of the linearized system. This controller has been simulated with the nonlinear plant for charging as the auxiliary energy storage has several advantages over battery-only or ultracapacitor-only system as discussed system by letting the designer size the battery for the energy storage rather than peak-power requirement

Yao, Bin

418

Proceedings of IMECE2007 2007 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

INTRODUCTION As a result of CFCs and HFCs being phased out, the search for alternatives to vapor-compression- mal and chemical stability. We propose its use as an absorbent in an absorption refrigeration cycle. A dynamic model of a single- effect absorption refrigeration cycle using ionic liquids as ab- sorbent

Sen, Mihir

419

Proceedings of IMECE 2001 2001 ASME International Mechanical Engineering Congress & Exposition  

E-print Network

% of the water from pulp is sequentially removed through gravity, vacuum dewatering, pressing, and thermal drying- rogate measurements, and the pressure settings in the multiple vacuum dewatering boxes are adjusted- ity, vacuum dewatering, mechanical press, and thermal drying in a paper machine, to form end product

Li, Perry Y.

420

Proceedings of IMECE2007 2007 ASME International Mechanical Engineering Congress and Exposition  

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diaphragms, thus providing perfect blow-by sealing and near zero friction, while adequately presenting, and the source of electrical energy is typically NIMH batteries. From a design and controls perspective of the batteries (180 kJ/kg), in terms of their active duration between charges. A state of the art example

Barth, Eric J.

421

Proceedings of DETC'04 2004 ASME Design Engineering Technical Conferences and  

E-print Network

. INTRODUCTION Cable-suspended robots (CSRs) are a type of parallel manipulator wherein the end-effector link to an upside-down six-degrees-of-freedom (dof) Stewart platform, with six cables instead of hydraulic weight only. Shen et al. (1994) adapt manipulability measures to CSRs. Choe et al. (1996) present

Williams II, Robert L.

422

Proceedings of IMECE'01 2001 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

ROBUST CONTROL OF ELECTRO-HYDRAULIC ROBOTIC MANIPULATORS: METHODS AND COMPARATIVE STUDIES £ Fanping Bu@ecn.purdue.edu ABSTRACT Compared to conventional robot manipulators driven by electrical motors, hydraulic robot arms have and drawbacks of each method. 1 Introduction Robotic manipulators driven by electro-hydraulic cylinders have

Yao, Bin

423

Proceedings of IMECE'06 2006 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

(DIARC) OF HYDRAULIC ROBOTICS ARM WITH ACCURATE PARAMETER ESTIMATES Amit Mohanty Bin Yao Graduate Student for a hydraulic robotic arm. The newly developed IARC design is first applied to the tra- jectory tracking in the controller design. Address all correspondence to this author. INTRODUCTION Robotic manipulators driven

Yao, Bin

424

Proceedings of DETC'03: ASME 2003 Design Engineering Technical Conferences and  

E-print Network

-based additive manufacturing system, gives a designer the power to build almost any conceivable geometry machine, the number of machines, the batch size, and other process parameters (layer thickness, road width into layers via software, and then sent to the machine, which constructs each cross-section until the part

425

Proceedings of IMECE2008 2008 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

Transcription and translation are the main processes by which a cell expresses the instructions encoded in its role in the system's dynamics [18,23,33,34]. These delays arise nat- urally from transcription, translation, degradation, and other cel- lular processes. If the time delays are of the order of the system

Rand, Richard H.

426

Proceedings of IDETC/CIE 2005 ASME International Design Engineering Technical Conferences &  

E-print Network

2005-85597 CVODES, THE SENSITIVITY-ENABLED ODE SOLVER IN SUNDIALS Radu Serban Alan C. Hindmash Center, California, 94551 Email: radu@llnl.gov, alanh@llnl.gov ABSTRACT CVODES, which is part of the SUNDIALS [4], later merged under the suite SUNDIALS [5] into one solver, CVODE, which runs on both serial

427

Proceedings of IDETC/CIE 2006 ASME 2006 International Design Engineering Technical Conferences &  

E-print Network

DETC2006-99727 DESIGN OF A STATICALLY BALANCED TENSEGRITY MECHANISM Mark Schenk, Just L. Herder Bio The combination of static balancing and tensegrity struc- tures has resulted in a new class of mechanisms: Statically Bal- anced Tensegrity Mechanisms. These are prestressed structures that are in equilibrium

Guest, Simon

428

Proceedings of IMECE2009 2009 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

November 13-19, Lake Buena Vista, Florida, USA IMECE2009- 11301 ADJUSTABLE TENSEGRITY ROBOT BASED ON ASSUR, Israel Uri Ben-Hanan ORT Braude College Karmiel, Israel ABSTRACT The paper introduces a tensegrity robot, there is a great interest in developing Deployable Tensegrity Structures due to its great potential for practical

Shai, Offer

429

Proceedings of IMECE '03 2003 ASME International Mechanical Engineering Congress and Exposition  

E-print Network

ranging from increased thermal effi- ciency to significantly reduced NOx emissions, Homogeneous Charge by rein- ducting exhaust gas with a variable valve actuation (VVA) sys- tem, however, HCCI possesses; constant volume combustion; isentropic expansion of product gases; isentropic exhaust of product gases

Shaver, Gregory M.

430

Proceedings of IMECE 2004 2004 ASME International Mechanical Engineering Congress & Exposition  

E-print Network

-rings to ensure uniform thermal expansion and contraction. To thermally isolate the DC motor, a PEEK motor mount. The valve incorporates a pressure- balanced rotary spool coupled to a servomotor/gearbox/encoder combination is used to connect the motor housing with the valve manifold. Additionally, the motor shaft is coupled

Barth, Eric J.

431

The 6th ASME-JSME Thermal Engineering Joint Conference March 16-20, 2003  

E-print Network

;fabricated with integrated metallic heaters and temperature sensors. The thermal resistances of the test of semiconductor lasers, however, is limited by the temperature rise in the active region [3,4]. The self. The size effect of these heat spreaders is experimentally demonstrated through comparison with reference

432

Proceedings of IMECE'05 2005 ASME International Mechanical Engineering Conference and Expo  

E-print Network

polymers comprise the active layer in Ionic Polymer- Metal Composites (IPMCs), which were first identified the electromechanical transduction mechanisms of the ionic poly- mer layer and the global IPMC stiffness. Most models Cluster ~200 µm Electrode Electrode Ionic Polymer Figure 1. CROSS-SECTIONAL VIEW OF A TYPICAL IPMC WITH IL

433

Proceedings of the ASME 2013 International Design Engineering Technical Conferences & Conference on Mechanical Vibration and Noise  

E-print Network

of quadratic nonlinearity. Compar- isons with the linear and cubical nonlinear cases are presented, amplitude-dependent dis- persion, nonlinear waveguides, metamaterials, acoustic filters 1 Introduction discrete periodic systems characterized by cubic nonlinearities by Narisetti et al. [10], where

Feeny, Brian

434

Proceedings of DETC'02 ASME 2002 Design Engineering Technical Conferences and  

E-print Network

indicate that superEGO is able to create experimental designs that yield more accurate models using fewer points than the original testing pro- cedure. NOMENCLATURE DOE Design of Experiments ISC Infill Sampling model Kriging model parameter to be fit p Kriging model parameter to be fit nugget Kriging model

Papalambros, Panos

435

1 Copyright 2009 by MSU Proceedings of the ASME 2009 International Mechanical Engineering Congress & Exposition  

E-print Network

material thermal decomposition. The long term goal of the research will be to impact structural fire safety a serious threat to structures, property, and human life. The general goal of this research is to develop in examining which gases are produced during combustion, there has been little work quantifying

Ghosh, Ruby N.

436

Proceedings of IMECE2006 2006 ASME International Mechanical Engineering Conference and Exposition  

E-print Network

and Exposition November 5-10, 2006, Chicago, Illinois, USA IMECE2006-14151 #12;fan Cooling fan fc Fuel cell ha November 5-10, 2006, Chicago, Illinois, USA IMECE2006-14151 CONTROL OF A PEM FUEL CELL COOLING SYSTEM such control, using a Multiple Input Single Output (MISO) fuel cell cooling system to regulate the internal

Yao, Bin

437

Proceedings of DETC/CIE'02 2002 ASME Design Engineering Technical Conferences  

E-print Network

´eal, Qu´ebec, Canada, H3A 2K6 Email: paul@cim.mcgill.ca ABSTRACT Planar kinematic mapping is applied. The planar kinematic mapping was introduced independently by Blaschke and Gr¨unwald in 1911 (Blaschke, 1911

Hayes, John

438

Pericardial Fluid Analysis  

MedlinePLUS

... website will be limited. Search Help? Pericardial Fluid Analysis Share this page: Was this page helpful? Formal name: Pericardial Fluid Analysis Related tests: Pleural Fluid Analysis , Peritoneal Fluid Analysis , ...

439

The transformation of heat in an engine  

NASA Technical Reports Server (NTRS)

This report presents a thermodynamic basis for rating heat engines. The production of work by a heat engine rests on the operation of supplying heat, under favorable conditions, to a working fluid and then taking it away.

Neumann, Kurt

1929-01-01

440

Fluid behavior in microgravity environment  

NASA Technical Reports Server (NTRS)

The instability of liquid and gas interface can be induced by the presence of longitudinal and lateral accelerations, vehicle vibration, and rotational fields of spacecraft in a microgravity environment. In a spacecraft design, the requirements of settled propellant are different for tank pressurization, engine restart, venting, or propellent transfer. In this paper, the dynamical behavior of liquid propellant, fluid reorientation, and propellent resettling have been carried out through the execution of a CRAY X-MP super computer to simulate fluid management in a microgravity environment. Characteristics of slosh waves excited by the restoring force field of gravity jitters have also been investigated.

Hung, R. J.; Lee, C. C.; Tsao, Y. D.

1990-01-01

441

The effect of ascorbic acid and fluid flow stimulation on the mechanical properties of a tissue engineered pelvic floor repair material.  

PubMed

Synthetic non-degradable meshes used in pelvic floor surgery can cause serious complications such as tissue erosion. A repair material composed of an autologous oral fibroblast seeded degradable polylactic acid scaffold may be a viable alternative. The aims of this study were to investigate the effects of media supplementation with additives (ascorbic acid-2-phosphate, glycolic acid and 17-?-oestradiol) on the mechanical properties of these scaffolds. Oral fibroblasts were isolated from buccal mucosa. The effects of the three additives were initially compared in two-dimensional culture to select the most promising collagen stimulating additive. Sterile electrospun scaffolds were seeded with 500,000 oral fibroblasts and fixed in 6-well plates and subjected to ascorbic acid-2-phosphate (the best performing additive) and/or mechanical stimulation. Mechanical stimulation by fluid shear stress was induced by rocking scaffolds on a platform shaker for 1?h/day for 10 of 14?days of culture. In two-dimensional culture, ascorbic acid-2-phosphate (concentrations from 0.02?mM to 0.04?M) and glycolic acid (10?M) led to significantly greater total collagen production, but ascorbic acid-2-phosphate at 0.03?mM produced the greatest stimulation (of the order of >100%). In three-dimensional culture, mechanical stimulation alone gave non-significant increases in stiffness and strength. Ascorbic acid-2-phosphate (0.03?mM) significantly increased collagen production in the order 280% in both static and mechanically stimulated scaffolds (p?

Osman, Nadir I; Roman, Sabiniano; Bullock, Anthony J; Chapple, Christopher R; MacNeil, Sheila

2014-09-01

442

Fluid flow control device  

Microsoft Academic Search

This patent describes a fluid flow control device operable in a gas purge mode, liquid flow mode or backflow restriction mode for use with a fluid circulating system including a pump to selectively control the direction of fluid flow through the fluid circulating system. The fluid flow control device comprises: a valve body including a lower fluid chamber and an

D. F. Bailey; W. F. Jr. Morrison

1991-01-01

443

ASM Specialty Handbook{reg_sign}: Carbon and alloy steels  

Microsoft Academic Search

Carbon and alloy steels are the workhorse of structural materials in modern engineering because of their very reasonable costs coupled with their many and varied properties that allow their use in such a large array of applications. it`s very easy to take steel for granted and forget how much it`s relied upon in critical uses such as cars, bridges, buildings,

1995-01-01

444

1 Copyright 2004 by ASME Proceedings of DETC'04  

E-print Network

for production, platform design for reducing time-to-market, design for system quality, design for life cycle engineering, life cycle considerations. INTRODUCTION Developing successful new products requires the ability to predict, early in the product development process, the life cycle impact of design decisions. Downstream

Herrmann, Jeffrey W.

445

1 Copyright 2005 by ASME Proceedings of IMECE2005  

E-print Network

Conference and Exposition Orlando, FL, USA, November 5-11, 2005 IMECE2005-81343 HOLISM, BIOMIMICRY Engineering Georgia Institute of Technology Atlanta, GA 30332-0405 USA Dayna Baumeister Biomimicry Guild P. In this article, one learns, however, that current approaches to biomimicry do not necessarily lead to such ends

446

1 Copyright 2009 by ASME Proceedings of FEDSM09  

E-print Network

and to reveal the unsteady heat transfer, mass transfer and phase changing process inside micro-sized water devices such as such as micro-total-analysis systems (-TAS) and micro-heat exchangers has created a need FOR MICRO-FLOW AND MICRO-SCALE HEAT TRANSFER STUDIES Hu, Hui Department of Aerospace Engineering Iowa State

Hu, Hui

447

1 Copyright 2004 by ASME HT-FED 2004  

E-print Network

-DIMENSIONAL HORIZONTAL BACKWARD FACING STEP J.G. Barbosa Saldana Department of Mechanical Engineering Texas A a three-dimensional horizontal backward-facing step heated from below at a constant temperature aspect of the separated flow and the backward-facing step has been the main target of several researchers

Sarin, Vivek

448

1 Copyright 2003 by ASME Proceedings of IMECE'03  

E-print Network

RANKINE CYCLE STEAM TURBINE FOR POWER GENERATION Luc G. Fréchette* , Changgu Lee, Selin Arslan, and Yuan-level and component design of a micro steam turbine power plant-on-a-chip which implements the Rankine cycle for micro. This micro heat engine implements a closed Rankine power cycle using a high speed microturbine

Frechette, Luc G.

449

In vitro osteogenic differentiation of human amniotic fluid-derived stem cells on a poly(lactide-co-glycolide) (PLGA)-bladder submucosa matrix (BSM) composite scaffold for bone tissue engineering.  

PubMed

Stem cells have become an important component of tissue regeneration, as they are able to differentiate into various cell types if guided appropriately. It is well known that cellular differentiation is greatly influenced by the surrounding microenvironment. We have developed a composite scaffold system using a collagen matrix derived from porcine bladder submucosa matrix (BSM) and poly(lactide-co-glycolide) (PLGA). In this study, we investigated whether a composite scaffold composed of naturally derived matrix combined with synthetic polymers would provide a microenvironment to facilitate the induction of osteogenic differentiation. We first showed that human amniotic fluid-derived stem cells (hAFSCs) adhered to the composite scaffolds and proliferated over time. We also showed that the composite scaffolds facilitated the differentiation of hAFSCs into an osteogenic lineage. The expression of osteogenic genes, including RUNX2, osteopontin (OPN) and osteocalcin (OCN) was upregulated in cells cultured on the composite scaffolds incubated in the osteogenic medium compared with ones without. Increased alkaline phosphatase (ALP) activity and calcium content indicates that hAFSCs seeded on 3D porous BSM-PLGA composite scaffolds resulted in higher mineralization rates as the duration of induction increased. This was also evidenced by the mineralized matrix within the scaffolds. The composite scaffold system provides a propermicroenvironment that can facilitate osteogenic differentiation of AFSCs. This scaffold system may be a good candidate material for bone tissue engineering. PMID:23353783

Kim, Jaehyun; Jeong, Seon Yeong; Ju, Young Min; Yoo, James J; Smith, Thomas L; Khang, Gilson; Lee, Sang Jin; Atala, Anthony

2013-02-01

450

MEMS fluid viscosity sensor.  

PubMed

Quartz shear resonators are employed widely as sensors to measure Newtonian viscosities of liquids. Perturbation of the electrical equivalent circuit parameters of the plate resonator by the fluid loading permits calculation of the mass density-shear viscosity product. Use of doubly rotated resonators does permit additional information to be obtained, but in no case can the viscosity and mass density values be separated. In these measurements, the resonator surface is exposed to a measurand bath whose extent greatly exceeds the penetration depth of the evanescent shear mode excited by the active element. Here we briefly review past techniques and current art, and sketch a proposal involving the interesting situation in which the separation between the resonator and a confining wall is less than the penetration depth of the fluid occupying the intervening region. To highlight the salient features of this novel case, the discussion is limited to the very idealized circumstance of a strictly 1-D problem, unencumbered by the vicissitudes inevitably encountered in practice. An appendix mentions some of these functional impedimenta and indicates how deviations from ideality might be approached in engineering embodiments. When the fluid confinement is of the order of the penetration depth, the resonator perturbation becomes a sensitive function of the separation, and it is found that viscosity and density may be separately and uniquely determined. Moreover, extreme miniaturization is a natural consequence because the penetration depth generally is on the order of micrometers for frequencies around 1 MHz at temperatures and pressures ordinarily encountered with gases and liquids. Micro-electro-mechanical (MEMS) versions of viscometers and associated types of fluid sensors are thereby enabled. PMID:20211786

Ballato, Arthur

2010-03-01

451

Acoustic energy-driven fluid pump and method  

SciTech Connect

Bulk fluid motion is promoted in a gaseous fluid contained within a conduit system provided with a diffuser without the need for a mean pressure differential across the conduit system. The contacting of the gaseous fluid with unsteady energy at a selected frequency and pressure amplitude induces fluid flow through the conical diffuser. The unsteady energy can be provided by pulse combustors, thermoacoustic engines, or acoustic energy generators such as acoustic speakers.

Janus, Michael C.; Richards, George A.; Robey, Edward H.

1997-12-01

452

ASME AG-1 Section FC Qualified HEPA Filters; a Particle Loading Comparison - 13435  

SciTech Connect

High Efficiency Particulate Air (HEPA) Filters used to protect personnel, the public and the environment from airborne radioactive materials are designed, manufactured and qualified in accordance with ASME AG-1 Code section FC (HEPA Filters) [1]. The qualification process requires that filters manufactured in accordance with this ASME AG-1 code section must meet several performance requirements. These requirements include performance specifications for resistance to airflow, aerosol penetration, resistance to rough handling, resistance to pressure (includes high humidity and water droplet exposure), resistance to heated air, spot flame resistance and a visual/dimensional inspection. None of these requirements evaluate the particle loading capacity of a HEPA filter design. Concerns, over the particle loading capacity, of the different designs included within the ASME AG-1 section FC code[1], have been voiced in the recent past. Additionally, the ability of a filter to maintain its integrity, if subjected to severe operating conditions such as elevated relative humidity, fog conditions or elevated temperature, after loading in use over long service intervals is also a major concern. Although currently qualified HEPA filter media are likely to have similar loading characteristics when evaluated independently, filter pleat geometry can have a significant impact on the in-situ particle loading capacity of filter packs. Aerosol particle characteristics, such as size and composition, may also have a significant impact on filter loading capacity. Test results comparing filter loading capacities for three different aerosol particles and three different filter pack configurations are reviewed. The information presented represents an empirical performance comparison among the filter designs tested. The results may serve as a basis for further discussion toward the possible development of a particle loading test to be included in the qualification requirements of ASME AG-1 Code sections FC and FK[1]. (authors)

Stillo, Andrew [Camfil Farr, 1 North Corporate Drive, Riverdale, NJ 07457 (United States)] [Camfil Farr, 1 North Corporate Drive, Riverdale, NJ 07457 (United States); Ricketts, Craig I. [New Mexico State University, Department of Engineering Technology and Surveying Engineering, P.O. Box 30001 MSC 3566, Las Cruces, NM 88003-8001 (United States)] [New Mexico State University, Department of Engineering Technology and Surveying Engineering, P.O. Box 30001 MSC 3566, Las Cruces, NM 88003-8001 (United States)

2013-07-01

453

Faculty of Engineering Mechanical, Automotive and  

E-print Network

Faculty of Engineering Mechanical, Automotive and Materials Engineering The field of Mechanical, Automotive and Materials Engineering offers a multi-faceted program where you tackle real-world problems in the engineering disciplines · Thermodynamics, fluids and heat transfer #12;Mechanical, Automotive and Materials

454

Diesel engine waste-heat power cycle  

Microsoft Academic Search

This article demonstrates a possibility for increasing the power output from diesel engines and improving the fuel economy for such engines. This is achieved by employing a power cycle which is driven solely by the engine waste-heat in the cooling water and, also, the exhaust gases. For road engines an organic fluid Rankine cycle is employed. R-12 is evaporated in

S. E. Aly

1988-01-01

455

Experimental investigation of gasoline compression ignition combustion in a light-duty diesel engine  

NASA Astrophysics Data System (ADS)

Due to increased ignition delay and volatility, low temperature combustion (LTC) research utilizing gasoline fuel has experienced recent interest [1-3]. These characteristics improve air-fuel mixing prior to ignition allowing for reduced emissions of nitrogen oxides (NOx) and soot (or particulate matter, PM). Computational fluid dynamics (CFD) results at the University of Wisconsin-Madison's Engine Research Center (Ra et al. [4, 5]) have validated these attributes and established baseline operating parameters for a gasoline compression ignition (GCI) concept in a light-duty diesel engine over a large load range (3-16 bar net IMEP). In addition to validating these computational results, subsequent experiments at the Engine Research Center utilizing a single cylinder research engine based on a GM 1.9-liter diesel engine have progressed fundamental understanding of gasoline autoignition processes, and established the capability of critical controlling input parameters to better control GCI operation. The focus of this thesis can be divided into three segments: 1) establishment of operating requirements in the low-load operating limit, including operation sensitivities with respect to inlet temperature, and the capabilities of injection strategy to minimize NOx emissions while maintaining good cycle-to-cycle combustion stability; 2) development of novel three-injection strategies to extend the high load limit; and 3) having developed fundamental understanding of gasoline autoignition kinetics, and how changes in physical processes (e.g. engine speed effects, inlet pressure variation, and air-fuel mixture processes) affects operation, develop operating strategies to maintain robust engine operation. Collectively, experimental results have demonstrated the ability of GCI strategies to operate over a large load-speed range (3 bar to 17.8 bar net IMEP and 1300-2500 RPM, respectively) with low emissions (NOx and PM less than 1 g/kg-FI and 0.2 g/kg-FI, respectively), and low fuel consumption (gross indicated fuel consumption <200 g/kWh). [1] Dec, J. E., Yang, Y., and Dronniou, N., 2011, "Boosted HCCI - Controlling Pressure- Rise Rates for Performance Improvements using Partial Fuel Stratification with Conventional Gasoline," SAE Int. J. Engines, 4(1), pp. 1169-1189. [2] Kalghatgi, G., Hildingsson, L., and Johansson, B., 2010, "Low NO(x) and Low Smoke Operation of a Diesel Engine Using Gasolinelike Fuels," Journal of Engineering for Gas Turbines and Power-Transactions of the Asme, 132(9), p. 9. [3] Manente, V., Zander, C.-G., Johansson, B., Tunestal, P., and Cannella, W., 2010, "An Advanced Internal Combustion Engine Concept for Low Emissions and High Efficiency from Idle to Max Load Using Gasoline Partially Premixed Combustion," SAE International, 2010-01-2198. [4] Ra, Y., Loeper, P., Reitz, R., Andrie, M., Krieger, R., Foster, D., Durrett, R., Gopalakrishnan, V., Plazas, A., Peterson, R., and Szymkowicz, P., 2011, "Study of High Speed Gasoline Direct Injection Compression Ignition (GDICI) Engine Operation in the LTC Regime," SAE Int. J. Engines, 4(1), pp. 1412-1430. [5] Ra, Y., Loeper, P., Andrie, M., Krieger, R., Foster, D., Reitz, R., and Durrett, R., 2012, "Gasoline DICI Engine Operation in the LTC Regime Using Triple- Pulse Injection," SAE Int. J. Engines, 5(3), pp. 1109-1132.

Loeper, C. Paul

456

Advanced working fluids: Thermodynamic properties  

NASA Astrophysics Data System (ADS)

Electrolytes are used as working fluids in gas fired heat pump chiller engine cycles. To find out which molecular parameters of the electrolytes impact on cycle performance, a molecular theory is developed for calculating solution properties, enthalpies, vapor-liquid equilibria, and engine cycle performance. Aqueous and ammoniac single and mixed salt solutions in single and multisolvent systems are investigated. An accurate correlation is developed to evaluate properties for concentrated electrolyte solutions. Sensitivity analysis is used to determine the impact of molecular parameters on the thermodynamic properties and cycle performance. The preferred electrolytes are of 1-1 valence type, small ion size, high molecular weight, and in strongly colligative cosolvent. The operating windows are determined for a number of absorption fluids of industrial importance.

Lee, Lloyd L.; Gering, Kevin L.

1990-10-01

457

Understanding the Long-Term Spectral Variability of Cygnus X-1 from BATSE and ASM Observations  

NASA Technical Reports Server (NTRS)

We present a spectral analysis of observations of Cygnus X-1 by the RXTE/ASM (1.5-12 keV) and CGRO/BATSE (20-300 keV), including about 1200 days of simultaneous data. We find a number of correlations between intensities and hardnesses in different energy bands from 1.5 keV to 300 keV. In the hard (low) spectral state, there is a negative correlation between the ASM 1.5-12 keV flux and the hardness at any energy. In the soft (high) spectral state, the ASM flux is positively correlated with the ASM hardness (as previously reported) but uncorrelated with the BATSE hardness. In both spectral states, the BATSE hardness correlates with the flux above 100 keV, while it shows no correlation with the flux in the 20-100 keV range. At the same time, there is clear correlation between the BATSE fluxes below and above 100 keV. In the hard state, most of the variability can be explained by softening the overall spectrum with a pivot at approximately 50 keV. The observations show that there has to be another, independent variability pattern of lower amplitude where the spectral shape does not change when the luminosity changes. In the soft state, the variability is mostly caused by a variable hard (Comptonized) spectral component of a constant shape superimposed on a constant soft blackbody component. These variability patterns are in agreement with the dependence of the rms variability on the photon energy in the two states. We interpret the observed correlations in terms of theoretical Comptonization models. In the hard state, the variability appears to be driven mostly by changing flux in seed photons Comptonized in a hot thermal plasma cloud with an approximately constant power supply. In the soft state, the variability is consistent with flares of hybrid, thermal/nonthermal, plasma with variable power above a stable cold disk. Also, based on broadband pointed observations simultaneous with those of the ASM and BATSE, we find the intrinsic bolometric luminosity increases by a factor of approximately 3-4 from the hard state to the soft one, which supports models of the state transition based on a change of the accretion rate.

Zdziarski, Andrzej A.; Poutanen, Juri; Paciesas, William S.; Wen, Linqing; Six, N. Frank (Technical Monitor)

2002-01-01

458

CSU Engine Web Pages  

NSDL National Science Digital Library

This resource on internal combustion engines comes from a mechanical engineering professor at Colorado State University. It is essentially an online textbook with three main chapters, which cover the topics of thermodynamics, heat transfer, and fluid mechanics involved in engine operation. Users should have an understanding of basic engine components, and a background in calculus would be helpful. Some of the material is fairly conceptual, while other parts involve analytical derivations. Many sections of the site have Java applets that effectively illustrate physical properties and dynamic processes.

459

Verification strategies for fluid-based plasma simulation models  

NASA Astrophysics Data System (ADS)

Verification is an essential aspect of computational code development for models based on partial differential equations. However, verification of plasma models is often conducted internally by authors of these programs and not openly discussed. Several professional research bodies including the IEEE, AIAA, ASME and others have formulated standards for verification and validation (V&V) of computational software. This work focuses on verification, defined succinctly as determining whether the mathematical model is solved correctly. As plasma fluid models share several aspects with the Navier-Stokes equations used in Computational Fluid Dynamics (CFD), the CFD verification process is used as a guide. Steps in the verification process: consistency checks, examination of iterative, spatial and temporal convergence, and comparison with exact solutions, are described with examples from plasma modeling. The Method of Manufactured Solutions (MMS), which has been used to verify complex systems of PDEs in solid and fluid mechanics, is introduced. An example of the application of MMS to a self-consistent plasma fluid model using the local mean energy approximation is presented. The strengths and weaknesses of the techniques presented in this work are discussed.

Mahadevan, Shankar

2012-10-01

460

Engine Oil and Its Viscosity  

NSDL National Science Digital Library

Practical example of how the viscosity of fluids impacts us everyday as we drive our cars; explains why viscosity of engine oil is important. The site also features other information about different aspects of automotive care and safety.

2008-10-07

461

BIOLOGICAL ENGINEERING Program of Study  

E-print Network

Pulp and Paper Foundation Professor. Fluid mechanics, rheology, numerical methods, coating processesBIOLOGICAL ENGINEERING Program of Study Financial Aid Research Facilities Applying Correspondence Medical Center Research Institute, increase research opportunities related to genetics and biomedical

Thomas, Andrew

462

Design and performance of a gas-turbine engine from an automobile turbocharger  

E-print Network

The Massachusetts Institute of Technology Department of Mechanical Engineering teaches thermodynamics and fluid mechanics through a pair of classes, Thermal Fluids Engineering I & II. The purpose of this project was to ...

Tsai, Lauren (Lauren Elizabeth)

2004-01-01

463

Interaction between endoplasmic/sarcoplasmic reticulum stress (ER/SR stress), mitochondrial signaling and Ca(2+) regulation in airway smooth muscle (ASM).  

PubMed

Airway inflammation is a key aspect of diseases such as asthma. Several inflammatory cytokines (e.g., TNF? and IL-13) increase cytosolic Ca(2+) ([Ca(2+)]cyt) responses to agonist stimulation and Ca(2+) sensitivity of force generation, thereby enhancing airway smooth muscle (ASM) contractility (hyper-reactive state). Inflammation also induces ASM proliferation and remodeling (synthetic state). In normal ASM, the transient elevation of [Ca(2+)]cyt induced by agonists leads to a transient increase in mitochondrial Ca(2+) ([Ca(2+)]mito) that may be important in matching ATP production with ATP consumption. In human ASM (hASM) exposed to TNF? and IL-13, the transient increase in [Ca(2+)]mito is blunted despite enhanced [Ca(2+)]cyt responses. We also found that TNF? and IL-13 induce reactive oxidant species (ROS) formation and endoplasmic/sarcoplasmic reticulum (ER/SR) stress (unfolded protein response) in hASM. ER/SR stress in hASM is associated with disruption of mitochondrial coupling with the ER/SR membrane, which relates to reduced mitofusin 2 (Mfn2) expression. Thus, in hASM it appears that TNF? and IL-13 result in ROS formation leading to ER/SR stress, reduced Mfn2 expression, disruption of mitochondrion-ER/SR coupling, decreased mitochondrial Ca(2+) buffering, mitochondrial fragmentation, and increased cell proliferation. PMID:25506723

Delmotte, Philippe; Sieck, Gary C

2015-02-01

464

* Corresponding author, johnjohn@umich.edu 1 Copyright 2011 by ASME Proceedings of the ASME 2011 International Design Engineering Technical Conferences &  

E-print Network

AND FORWARD-LOOKING DISPATCH OF AN ELECTRICAL MICROGRID FOR ENERGY STORAGE PLANNING John W. Whitefoot* Optimal-looking optimal dispatch for future energy storage planning. We present a case study of an `islanded' military-in vehicles with electrical export power capability. The optimal design and forward-looking dispatch strategy

Papalambros, Panos

465

Civil Engineering Environmental Engineering  

E-print Network

Civil Engineering Environmental Engineering Dr Derek Clarke Admissions Tutor #12;2 What is Civil) ­ Water Hydraulics (Dams & rivers) ­ Engineering Mathematics Civil Engineering Core Subjects #12;11 Core. Renovation of old canals and tunnels Design of new storage reservoirs #12;17 Civil Engineering

Anderson, Jim

466

Gyroelastic fluids  

SciTech Connect

A study is made of a scale model in three dimensions of a guiding center plasma within the purview of gyroelastic (also known as finite gyroradius-near theta pinch) magnetohydrodynamics. The (nonlinear) system sustains a particular symmetry called isorrhopy which permits the decoupling of fluid modes from drift modes. Isorrhopic equilibria are analyzed within the framework of geometrical optics resulting in (local) dispersion relations and ray constants. A general scheme is developed to evolve an arbitrary linear perturbation of a screwpinch equilibrium as an invertible integral transform (over the complete set of generalized eigenfunctions defined naturally by the equilibrium). Details of the structure of the function space and the associated spectra are elucidated. Features of the (global) dispersion relation owing to the presence of gyroelastic stabilization are revealed. An energy principle is developed to study the stability of the tubular screwpinch.

Kerbel, G.D.

1981-01-20

467

46 CFR 61.30-5 - Preparation of thermal fluid heater for inspection and test.  

Code of Federal Regulations, 2010 CFR

...CONTINUED) MARINE ENGINEERING PERIODIC TESTS AND INSPECTIONS Tests and Inspections of Fired Thermal Fluid Heaters...Preparation of thermal fluid heater for inspection and test. For visual inspection, access plates and manholes...

2010-10-01

468

46 CFR 52.01-35 - Auxiliary, donkey, fired thermal fluid heater, and heating boilers.  

Code of Federal Regulations, 2010 CFR

...fired thermal fluid heater, and heating boilers. 52.01-35 Section 52.01-35...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-35...fired thermal fluid heater, and heating boilers. (a) To determine the...

2010-10-01

469

46 CFR 52.01-35 - Auxiliary, donkey, fired thermal fluid heater, and heating boilers.  

Code of Federal Regulations, 2013 CFR

...fired thermal fluid heater, and heating boilers. 52.01-35 Section 52.01-35...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-35...fired thermal fluid heater, and heating boilers. (a) To determine the...

2013-10-01

470

46 CFR 52.01-35 - Auxiliary, donkey, fired thermal fluid heater, and heating boilers.  

Code of Federal Regulations, 2012 CFR

...fired thermal fluid heater, and heating boilers. 52.01-35 Section 52.01-35...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-35...fired thermal fluid heater, and heating boilers. (a) To determine the...

2012-10-01

471

46 CFR 52.01-35 - Auxiliary, donkey, fired thermal fluid heater, and heating boilers.  

Code of Federal Regulations, 2011 CFR

...fired thermal fluid heater, and heating boilers. 52.01-35 Section 52.01-35...CONTINUED) MARINE ENGINEERING POWER BOILERS General Requirements 52.01-35...fired thermal fluid heater, and heating boilers. (a) To determine the...

2011-10-01

472

Automatic fluid dispenser  

NASA Technical Reports Server (NTRS)

Fluid automatically flows to individual dispensing units at predetermined times from a fluid supply and is available only for a predetermined interval of time after which an automatic control causes the fluid to drain from the individual dispensing units. Fluid deprivation continues until the beginning of a new cycle when the fluid is once again automatically made available at the individual dispensing units.

Sakellaris, P. C. (inventor)

1977-01-01

473

Fluid sampling tool  

DOEpatents

A fluid-sampling tool for obtaining a fluid sample from a container. When used in combination with a rotatable drill, the tool bores a hole into a container wall, withdraws a fluid sample from the container, and seals the borehole. The tool collects fluid sample without exposing the operator or the environment to the fluid or to wall shavings from the container.

Garcia, Anthony R. (Espanola, NM); Johnston, Roger G. (Las Alamos, NM); Martinez, Ronald K. (Santa Cruz, NM)

2000-01-01

474

Thermophysical Properties of Fluids and Fluid Mixtures  

SciTech Connect

The major goal of the project was to study the effect of critical fluctuations on the thermophysical properties and phase behavior of fluids and fluid mixtures. Long-range fluctuations appear because of the presence of critical phase transitions. A global theory of critical fluctuations was developed and applied to represent thermodynamic properties and transport properties of molecular fluids and fluid mixtures. In the second phase of the project, the theory was extended to deal with critical fluctuations in complex fluids such as polymer solutions and electrolyte solutions. The theoretical predictions have been confirmed by computer simulations and by light-scattering experiments. Fluctuations in fluids in nonequilibrium states have also been investigated.

Sengers, Jan V.; Anisimov, Mikhail A.

2004-05-03

475

Synovial fluid analysis  

MedlinePLUS

Joint fluid analysis; Joint fluid aspiration ... El-Gabalawy HS. Synovial fluid analysis, synovial biopsy, and synovial pathology. In: Firestein GS, Budd RC, Gabriel SE, et al., eds. Kellys Textbook of Rheumotology . 9th ed. ...

476

Fluid Inclusion Gas Analysis  

DOE Data Explorer

Fluid inclusion gas analysis for wells in various geothermal areas. Analyses used in developing fluid inclusion stratigraphy for wells and defining fluids across the geothermal fields. Each sample has mass spectrum counts for 180 chemical species.

Dilley, Lorie

477

Fluid Inclusion Gas Analysis  

SciTech Connect

Fluid inclusion gas analysis for wells in various geothermal areas. Analyses used in developing fluid inclusion stratigraphy for wells and defining fluids across the geothermal fields. Each sample has mass spectrum counts for 180 chemical species.

Dilley, Lorie

2013-01-01

478

33engineering EnginEEring and  

E-print Network

33engineering EnginEEring and ThE builT EnvironmEnT www.wits.ac.za/ebe #12;34 guide for applicants 2015 The study of Engineering Career opportunities for engineers are limitless and extend beyond the formal engineering sector. A career in engineering requires special talents ­ engineers need

Wagner, Stephan

479

ASM Specialty Handbook{reg_sign}: Carbon and alloy steels  

SciTech Connect

Carbon and alloy steels are the workhorse of structural materials in modern engineering because of their very reasonable costs coupled with their many and varied properties that allow their use in such a large array of applications. it`s very easy to take steel for granted and forget how much it`s relied upon in critical uses such as cars, bridges, buildings, landing gear assemblies, and more. There are in-depth reviews on formability weldability, machineability, and hardenability of the various steel grades. One can also discover how adding certain alloys can significantly improve steel processing. The strength and toughness section has been greatly expanded with more coverage than ever before of corrosion fatigue. One has access to extensive reports detailing which steels are more susceptible to environmental damage such as stress-corrosion and hydrogen embrittlement. Temperature effects relating to mechanical properties and corrosion are also discussed.

Davis, J.R. [ed.

1995-12-31

480

Particle-based fluid-fluid interaction  

Microsoft Academic Search

The interesting and complex behavior of fluids emerges mainly from interaction processes. While interactions of fluids with static or dynamic solids has caught some attention in computer graphics lately, the mutual interaction of different types of fluids such as air and water or water and wax has received much less attention although these types of interaction are the basis for

Matthias Mller; Barbara Solenthaler; Richard Keiser; Markus H. Gross

2005-01-01

481

Information sources in engineering  

SciTech Connect

This book was designed to serve as a guide to the wide range of sources of information used by engineers. The first part of this research tool describes the major primary and secondary sources for information (including online systems) that are relevant to all engineering disciplines. The second part provides the same information for each of the 19 specific engineering disciplines, with each chapter being written by an expert in the particular branch of engineering. This new edition of a work previously published under the title Use of Engineering Literature has been completely re-written with a new team of contributors. There is greater emphasis on disciplines basic to all engineering areas, e.g., fluid mechanics, thermodynamics, and materials science. Recent developments covered include robotics, CAD/CAM systems, renewable energy sources, and the use of online systems for information retrieval.

Anthony, L.J.

1985-01-01

482

electrical, engineering  

E-print Network

engineering materials science and engineering mechanical engineering solar energy engineering and Sustainable Solar Technologies (QESST), works with students building solar cars in Fulton Engineering's BESTschool of electrical, computer and energy engineering Annual Report 2012-2013 Breaking the final

Zhang, Junshan

483

Engineered Multifunctional Surfaces for Fluid Handling  

NASA Technical Reports Server (NTRS)

Designs incorporating variations in capillary geometry and hydrophilic and/or antibacterial surface properties have been developed that are capable of passive gas/liquid separation and passive water flow. These designs can incorporate capillary grooves and/or surfaces arranged to create linear and circumferential capillary geometry at the micro and macro scale, radial fin configurations, micro holes and patterns, and combinations of the above. The antibacterial property of this design inhibits the growth of bacteria or the development of biofilm. The hydrophilic property reduces the water contact angle with a treated substrate such that water spreads into a thin layer atop the treated surface. These antibacterial and hydrophilic properties applied to a thermally conductive surface, combined with capillary geometry, create a novel heat exchanger capable of condensing water from a humid, two-phase water and gas flow onto the treated heat exchanger surfaces, and passively separating the condensed water from the gas flow in a reduced gravity application. The overall process to generate the antibacterial and hydrophilic properties includes multiple steps to generate the two different surface properties, and can be divided into two major steps. Step 1 uses a magnetron-based sputtering technique to implant the silver atoms into the base material. A layer of silver is built up on top of the base material. Completion of this step provides the antibacterial property. Step 2 uses a cold-plasma technique to generate the hydrophilic surface property on top of the silver layer generated in Step 1. Completion of this step provides the hydrophilic property in addition to the antibacterial property. Thermally conductive materials are fabricated and then treated to create the antibacterial and hydrophilic surface properties. The individual parts are assembled to create a condensing heat exchanger with antibacterial and hydrophilic surface properties and capillary geometry, which is capable of passive phase separation in a reduced gravity application. The plasma processes for creating antibacterial and hydrophilic surface properties are suitable for applications where water is present on an exposed surface for an extended time, such that bacteria or biofilms could form, and where there is a need to manage the water on the surface. The processes are also suitable for applications where only the hydrophilic property is needed. In particular, the processes are applicable to condensing heat exchangers (CHXs), which benefit from the antibacterial properties as well as the hydrophilic properties. Water condensing onto the control surfaces of the CHX will provide the moist conditions necessary for the growth of bacteria and the formation of biofilms. The antibacterial properties of the base layer (silver) will mitigate and prevent the growth of bacteria and formation of biofilms that would otherwise reduce the CHX performance. In addition, the hydrophilic properties reduce the water contact angle and prevent water droplets from bridging between control surfaces. Overall, the hydrophilic properties reduce the pressure drop across the CHX.

Thomas, Chris; Ma, Yonghui; Weislogel, Mark

2012-01-01

484

Materials and design bases issues in ASME Code Case N-47  

SciTech Connect

A preliminary evaluation of the design bases (principally ASME Code Case N-47) was conducted for design and operation of reactors at elevated temperatures where the time-dependent effects of creep, creep-fatigue, and creep ratcheting are significant. Areas where Code rules or regulatory guides may be lacking or inadequate to ensure the operation over the expected life cycles for the next-generation advanced high-temperature reactor systems, with designs to be certified by the US Nuclear Regulatory Commission, have been identified as unresolved issues. Twenty-two unresolved issues were identified and brief scoping plans developed for resolving these issues.

Huddleston, R.L.; Swindeman, R.W. [Oak Ridge National Lab., TN (United States)

1993-04-01

485

Quartz resonator fluid monitors for vehicle applications  

SciTech Connect

Thickness shear mode (TSM) quartz resonators operating in a new {open_quotes}Lever oscillator{close_quotes} circuit are used as monitors for critical automotive fluids. These monitors respond to the density and viscosity of liquids contacting the quartz surface. Sensors have been developed for determining the viscosity characteristics of engine lubricating oil, the state-of-charge of lead-acid storage batteries, and the concentration variations in engine coolant.

Cernosek, R.W.; Martin, S.J.; Wessendorf, K.O.; Terry, M.D. [Sandia National Labs., Albuquerque, NM (United States); Rumpf, A.N. [Ktech Corp., Albuquerque, NM (United States)

1994-09-01

486

The Basics of Design Engineering  

NSDL National Science Digital Library

A product of Penton Publishing, The Basics of Design Engineering is a wonderful introduction to this field of engineering. The site is divided into eight chapters--Motion Control, CAD/CAM, Materials, Mechanical Systems and Components, Fluid Power, Electrical and Electronic, Fastening and Joining, and Training/Outsourcing. Each chapter is further broken into multiple sections, making information easy to access.

2000-01-01

487

286 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 13, NO. 3, JUNE 2008 Evaluation of Electrorheological Fluid Dampers  

E-print Network

/torque of the actuator. In this paper, an ERF damper/brake is introduced and its magnetic resonance (MR) compatibility within the MRI is almost the same as that in normal operation. The signal-to-noise investiga- tion presented in this paper can facilitate the choice of ERF brake actuation principle to various applications

Mavroidis, Constantinos

488

Magnetorheological fluids for extreme environments : stronger, lighter, hotter  

E-print Network

The controllable properties of magnetorheological (MR) fluids offer reliable and efficient actuation means to a number of far-ranging engineering applications. In this thesis we are motivated by the applications of MR ...

Ocalan, Murat

2011-01-01

489

46 CFR 58.30-30 - Fluid power cylinders.  

Code of Federal Regulations, 2010 CFR

...GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS Fluid...less than 4 times the maximum allowable working pressure. Drawings and calculations or a certified burst test report shall...

2010-10-01

490

Research in Applied Mathematics, Fluid Mechanics and Computer Science  

NASA Technical Reports Server (NTRS)

This report summarizes research conducted at the Institute for Computer Applications in Science and Engineering in applied mathematics, fluid mechanics, and computer science during the period October 1, 1998 through March 31, 1999.

1999-01-01

491

Engine emission control device  

Microsoft Academic Search

An air pollution control device is described for use with automobile engines for filtering crankcase and exhaust emissions. The device comprises a filtering chamber containing fluid coated filtering material having an inlet of a first diameter, an outlet of a second, larger diameter to cause a decrease in internal pressure of the air-pollutant mixture entering through the inlet, a controlled

1980-01-01

492

College of Engineering College of Engineering  

E-print Network

College of Engineering College of Engineering Office in Engineering Building, Room 202 (970) 491 UNDERGRADUATE MAJORS Biomedical Engineering Chemical and Biological Engineering Civil Engineering Computer Engineering Electrical Engineering Engineering Science Environmental Engineering Mechanical Engineering

Collett Jr., Jeffrey L.

493

Fluid blade disablement tool  

Microsoft Academic Search

A fluid blade disablement (FBD) tool that forms both a focused fluid projectile that resembles a blade, which can provide precision penetration of a barrier wall, and a broad fluid projectile that functions substantially like a hammer, which can produce general disruption of structures behind the barrier wall. Embodiments of the FBD tool comprise a container capable of holding fluid,

Juan-Carlos Jakaboski; Chance G. Hughs; Steven N. Todd

2012-01-01

494

Calibration of denitrifying activity of polyphosphate accumulating organisms in an extended ASM2d model.  

PubMed

This paper presents the results of an experimental study for the modelling and calibration of denitrifying activity of polyphosphate accumulating organisms (PAOs) in full-scale WWTPs that incorporate simultaneous nitrogen and phosphorus removal. The convenience of using different yields under aerobic and anoxic conditions for modelling biological phosphorus removal processes with the ASM2d has been demonstrated. Thus, parameter ?(PAO) in the model is given a physical meaning and represents the fraction of PAOs that are able to follow the DPAO metabolism. Using stoichiometric relationships, which are based on assumed biochemical pathways, the anoxic yields considered in the extended ASM2d can be obtained as a function of their respective aerobic yields. Thus, this modification does not mean an extra calibration effort to obtain the new parameters. In this work, an off-line calibration methodology has been applied to validate the model, where general relationships among stoichiometric parameters are proposed to avoid increasing the number of parameters to calibrate. The results have been validated through a UCT scheme pilot plant that is fed with municipal wastewater. The good concordance obtained between experimental and simulated values validates the use of anoxic yields as well as the calibration methodology. Deterministic modelling approaches, together with off-line calibration methodologies, are proposed to assist in decision-making about further process optimization in biological phosphate removal, since parameter values obtained by off-line calibration give valuable information about the activated sludge process such as the amount of DPAOs in the system. PMID:20638698

Garca-Usach, F; Ribes, J; Ferrer, J; Seco, A

2010-10-01

495

Results from Evaluation of Proposed ASME AG-1 Section FI Metal Media Filters - 13063  

SciTech Connect

High efficiency particulate air (HEPA) filtration technology is commonly used in Department of Energy (DOE) facilities that require control of radioactive particulate matter (PM) emissions due to treatment or management of radioactive materials. Although HEPA technology typically makes use of glass fiber media, metal and ceramic media filters are also capable of filtering efficiencies beyond the required 99.97%. Sintered metal fiber filters are good candidates for use in DOE facilities due to their resistance to corrosive environments and resilience at high temperature and elevated levels of relative humidity. Their strength can protect them from high differential pressure or pressure spikes and allow for back pulse cleaning, extending filter lifetime. Use of these filters has the potential to reduce the cost of filtration in DOE facilities due to life cycle cost savings. ASME AG-1 section FI has not been approved due to a lack of protocols and performance criteria for qualifying section FI filters. The Institute for Clean Energy Technology (ICET) with the aid of the FI project team has developed a Section FI test stand and test plan capable of assisting in the qualification ASME AG-1 section FI filters. Testing done at ICET using the FI test stand evaluates resistance to rated air flow, test aerosol penetration and resistance to heated air of the section FI filters. Data collected during this testing consists of temperature, relative humidity, differential pressure, flow rate, upstream particle concentration, and downstream particle concentration. (authors)

Wilson, John A.; Giffin, Paxton K.; Parsons, Michael S.; Waggoner, Charles A. [Institute for Clean Energy Technology, Mississippi State University, 205 Research Blvd Starkville, MS 39759 (United States)] [Institute for Clean Energy Technology, Mississippi State University, 205 Research Blvd Starkville, MS 39759 (United States)

2013-07-01

496

Overview of MSFC's Applied Fluid Dynamics Analysis Group Activities  

NASA Technical Reports Server (NTRS)

This viewgraph report presents an overview of activities and accomplishments of NASA's Marshall Space Flight Center's Applied Fluid Dynamics Analysis Group. Expertise in this group focuses on high-fidelity fluids design and analysis with application to space shuttle propulsion and next generation launch technologies. Topics covered include: computational fluid dynamics research and goals, turbomachinery research and activities, nozzle research and activities, combustion devices, engine systems, MDA development and CFD process improvements.

Garcia, Roberto; Griffin, Lisa; Williams, Robert

2002-01-01

497

PENN STATE and "GREEN" HYDRAULIC FLUIDS A Fact Sheet  

E-print Network

can reduce the amount of imported oil by over 15 million barrels per year by using vegetable oils vegetable oils. The use of biodegradable hydraulic fluids adds jobs and dollars to the agricultural industry." To be classified biodegradable, lubricants such as hydraulic fluids, gear oils, engine oils, and other industrial

Lee, Dongwon

498

First step: Turn on the camera by setting the top switch to "ASM". (1) For manual focus  

E-print Network

First step: Turn on the camera by setting the top switch to "ASM". (1) For manual focus: (a) press: To take good photos in the darkroom with the digital camera, you will need to: (1) Use manual focus (set USB port inside the door on the left side of the camera. Then turn the dial on top of the camera

499

656 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 4, AUGUST 2011 Fiber-Directed Conjugated-Polymer Torsional  

E-print Network

the polymer-deposition process. Upon actuation, the electrolyte-soaked tube swells, and consequently, produces to a nonswelling layer [2] or another conjugated-polymer layer, but with different swelling [7]­[10], results656 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 4, AUGUST 2011 Fiber-Directed Conjugated-Polymer

Tan, Xiaobo

500

918 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 5, OCTOBER 2011 Orientation Control of Biological Cells Under  

E-print Network

918 IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 5, OCTOBER 2011 Orientation Control feedback to an image-based visual servo controller that is responsible for online calibration of coordinate program. X. Y. Liu was with the Advanced Micro and Nanosystems Laboratory, Me- chanical and Industrial

Sun, Yu