Results 251 to 260 of about 685,387 (303)

Critical heat flux and heat transfer for high heat flux applications

International Journal of Heat and Mass Transfer, 1986
Mesure de flux thermiques critiques a l'ebullition dans des tubes horizontaux de cuivre en ecoulements annulaires et sous refroidis dans un large domaine de debit massique.
R.D. Boyd, L.N. Powell, L.L. Schluter
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Critical Heat Flux in Tubes With Cosine Axial Heat Flux

Heat Transfer: Volume 2, 2005
In this study a method to predict CHF (Critical Heat Flux) in vertical round tubes with cosine heat flux distribution was examined. For this purpose a uniform correlation, based on local condition hypothesis, was developed from 9,366 CHF data points of uniform heat flux heaters.
W. Jaewoo Shim, Joo-Yong Park, Ji-Su Lee, Dong Kook Kim   +3 more
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Cloaking of heat flux and temperature

Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011
Due to equal arc length in different coordinate system, we derive the scaling factor of rectangular Cartesian coordinates and curvilinear orthogonal coordinates; meanwhile, we also derive the equations of heat flux density (or heat flux, or thermal flux) and quantity of heat by means of the transformation relation of vectors in different coordinate ...
Lunwu Zeng, Runxia Song
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Heating of a Compressible Liquid by a Constant Heat Flux

Journal of Applied Mechanics and Technical Physics, 2003
Several variants of the problem of heating a compressible liquid by a time-independent heat flux are numerically studied. It is shown that, after a certain time, the pressure everywhere behind the shock wave differs only little from some constant value.
Belyakov, G. V., Charakhch'yan, A. A.
openaire   +2 more sources

Errors in heat flux measurements due to the thermal resistance of heat flux disks

Journal of Applied Physiology, 1990
Questions have been raised regarding the effect of the thermal resistance of heat flux transducers (HFTs) on the thermal flux from the skin. A model capable of simulating a large range of "tissue" insulation (variable-R model) was used to study the effect of the underlying tissue insulation on the relative error in heat flux due to the thermal ...
M B, Ducharme, J, Frim, P, Tikuisis
openaire   +2 more sources

Transverse flux induction heating

Electrical Engineering, 1950
FOR SEVERAL years following 1941, the author was engaged in the development of radio-frequency induction heating for the flow-brightening of electrolytic tin plate. Lines are in operation today melting the electrolytically deposited tin coating on 30-inch-wide steel strip at speeds of 1,300 feet per minute with a power input of 1,200 kw to the strip ...
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Modeling of Heat Flux Distortion Around Heat Flux Sensors

1985
The effect of a heat flux sensor on the heat transfer in the material surrounding the sensor has been studied in detail, and a steady-state finite difference computer model has been written to predict the ratio of the heat flux through the sensor to the undisturbed flux in the material surrounding the sensor, qs/qm, as a function of the ratio of the ...
DM Apthorp, TP Bligh
openaire   +1 more source

Achieving a Specific Nonuniform Heat Flux With an Electrical Heat Flux Plate

Journal of Heat Transfer, 2013
A voltage applied across a uniform plate results in a uniform ohmic heat dissipation, useful for conducting heat transfer experiments or preventing unacceptably low temperatures on spacecraft components. Most experiments to date involve application of a known uniform heat flux to the surface of a model.
James L. Rutledge, Marc D. Polanka
openaire   +1 more source

PROPERTIES OF HEAT FLUX FUNCTIONS AND A LINEAR THEORY OF HEAT FLUX

International Journal of Modern Physics B, 1995
The symmetry and positive definiteness of thermal conductivity tensor K are used to derive some properties of heat flux functions ɸi (i=0, 1, 2). All ɸi are shown to be real-valued. Both ɸ0 and ɸ2 are found to be positive definite, and ɸ1 is constrained between −(ɸ0 + ɸ2) and (ɸ0 + ɸ2).
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Heat Flux and Heat Transfer Coefficient

2021
Heat flux and heat transfer coefficient may either be measured by a single measurement process, or they may require the measurement of several quantities before they may be estimated. Of course, it is best if the required quantity is directly measurable. We will give as much detail as possible, keeping in mind the target reader of the book.
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