A group of generalized curves was formulated, in nomograph form, which permit the rapid, accurate determination of the free convection heat transfer coefflcient for any surface in air, under heating or cooling conditions. Since, with free convection heat transfer, ...
Energy Citations Database
A major portion of a building's energy consumption can result from earth coupled heat transfer processes. Accurate prediction of heat transfer rates through floors, basements, bermed walls, and earth-covered roofs is a critical first step toward effective...
National Technical Information Service (NTIS)
The surface energy balance includes a term for soil heat flux. Soil heat flux is difficult to measure because it includes conduction and convection heat transfer processes. Accurate representation of soil heat flux is an important consideration in many modeling and ...
Technology Transfer Automated Retrieval System (TEKTRAN)
... These methods and procedures would be used to provide accurate data for designing drilling mud systems and cement jobs for these deep, hot ...
DTIC Science & Technology
Experimental data on heat transfer in boiling in a film of liquid moving under gravity have been processed in dimensionless coordinates. A comparison between the data on heat transfer during boiling in a film with the data on heat transfer in pool boiling is carried out, ...
NASA Astrophysics Data System (ADS)
A set of general curves were formulated in nomograph form which permit rapid, accurate determination of freeconvection heat-transfer film coefficients for any surface in air under either heating or cooling conditions. (W.L.H.)
Convective heat transfer, due to axial flow fans impinging air onto a heated flat plate, is investigated with infrared thermography to assess the heated-thin-foil technique commonly used to quantify two-dimensional heat transfer performance. Flow conditions generating ...
Heat in body is generally transferred by blood perfusion system but its mechanism varies in whole body systems. The Pennes Equation is a heat transfer equation that is generally used as a balance equation in bioheat transfer analysis. Although this equation is usually used in applied problems, ...
PubMed
The very high temperature level reached in actual turbine components requires accurate simulation tools to predict the heat transfers. The turbine flow is very complex. it is dominated by high pressure gradients, three- dimensional viscous effects, and hi...
Investigators have used infrared devices to accurately measure heated surface temperatures. Several of these applications have been for turbine heat transfer studies involving film cooling and surface roughness, typically, these measurements use an infrar...
Accurate measurement of heat flux is essential to optimize structural and process design and to improve understanding of energy transfer in natural systems. Laboratory and field experiments evaluated the performance of a new, perforated heat flux plate designed for environmental applications. Labora...
The article attempts to determine a more accurate dependence between heat transfer and friction in super sonic flow of gas, flowing over a flat plate, by analyzing experiments with respect to direct and simultaneous measurement of the local values of heat...
What sources does one use to obtain thermal properties. " Heat Transfer text ... Could not find thermal properties on this specific titanium alloy. " What does an ...
NASA Website
measurement or measurement interpretation errors and that the code may not accurately represent or recognize some of the losses, heat-transfer, and ...
Turbine Blade Cooling Passage. This work is motivated by the need to accurately predict heat transfer in turbomachinery. For efficient gas turbine operation, flow ...
Sep 19, 2005 ... Turbulent mixing and heat transfer are upgraded by including PDE's that ... by the larger prime contractors to provide simulation support. ...
point of bubble inception, the data in the local boiling range could also be correlated. ... accurately predict the heat transfer during local boiling. ...
accurate prediction of local shock phenomena, including boundary layer separation and consequent heat transfer, will necessitate FRC calculations for flight ...
This paper discusses three-dimensional combined radiative and convective heat-transfer process in a furnace for LPG reforming which is simulated by introducing the radiosity concept into the radiative heat ray method for accurate radiative heat-transfer analysis. Together with an analysis of the chemical reaction ...
Effects of thermal dispersion on heat transfer and temperature field within cross-flow tubular heat exchangers are investigated both analytically and numerically, exploiting the volume averaging theory in porous media. Thermal dispersion caused by fluid mixing due to the presence of the obstacles plays an important role in enhancing ...
... HEAT TRANSFER), CONVECTION(HEAT TRANSFER), VAPORIZATION, CONDENSATION, HEAT OF VAPORIZATION, THERMAL RADIATION ...
Contents: The fundamentals of the theory of transfers; Heat conduction and heat transfer in bodies; Convection heat transfer; Radiative heat exchange.
Charts and equations are given for calculating the rate of heat transfer between surfaces at known temperatures or the temperature of one surface when the temperature of the other surface and the heat flux are specified. Results are accurate if dimensions of the surfaces are large compared to gap width and ...
In this paper, an analysis of transient heat transfer during heat sterilization and cooling processes of a cylindrical canned product is presented. In the analysis, most practical case including the boundary condition of third kind (i.e., convection boundary condition, leading to 0.1 <= Bi <= 100) was employed. A simple ...
... THESIS A HEAT TRANSFER MODEL FOR A HEATED HELIUM AIRSHIP by ... A HEAT TRANSFER MODEL OF A HEATED HELIUM AIRSHIP ...
Short pin-fin and pin-fin arrays are frequently used in turbine blade internal cooling systems to enhance cooling and stiffen the structure. The present work has shown that a knowledge of the detailed heat transfer coefficient distribution is required to predict the cooling effect of such devices accurately. The ...
