Results 241 to 250 of about 296,914 (286)

Natural Convection with Dissipative Heating

Communications in Mathematical Physics, 2000
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Kagei, Yoshiyuki, Růžička, Michael, Thäter, Gudrun   +2 more
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MR gradient coil heat dissipation

Magnetic Resonance in Medicine, 1995
AbstractThe temperature responses of five different gradient coil designs were modeled using simplified engineering equations and measured. The model predicts that the coil temperature approaches a maximum as an inverse exponential, where the maximum temperature is governed by two parameters: a local power density and a cooling term.
K C, Chu, B K, Rutt
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Heat dissipation in graphene foams

Nano Research, 2020
Graphene foam (GF)—a three-dimensional network of hollow graphene branches—is a highly attractive material for diverse applications. However, to date, the heat dissipation characteristics of GFs have not been characterized. To fill this gap, we synthesized GF devices, subjected them to high temperatures, and investigated their thermal behavior by using
Yaniv Cohen, Siva K. Reddy, Assaf Ya’akobovitz   +2 more
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Ceramic simplifies heat dissipation

ATZelektronik worldwide, 2010
LEDs suffer heat problems limiting their success as a light source. Much attention is given to the heatsink, less to the layers and barriers between LED and the heat dissipating surface. A change of concept and material allows significant gains in thermal management and reliability as well as a simplified system.
Armin Veitl, Alexander Dohn
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Dissipative heating in convective flows

Journal of Fluid Mechanics, 1975
Dissipative heating is produced by irreversible processes, such as viscous or ohmic heating, in a convecting fluid; its importance depends on the ratio d/HT of the depth of the convecting region to the temperature scale height. Integrating the entropy equation for steady flow yields an upper bound to the total rate of dissipative heating in a ...
Hewitt, J. M., McKenzie, D. P., Weiss, N. O.   +2 more
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Phonon heat dissipation in silicon

2007 International Semiconductor Device Research Symposium, 2007
Thermal budget is quickly emerging as the prominent limitation on future trends in scaling of semiconductor devices. Detailed understanding of electron-phonon coupling, as well as characteristics of the phonon heat generated by the electron current, such as phonon mode and spectrum, are crucial to our understanding of the micro-scale heating issues in ...
Zlatan Aksamija, Umberto Ravaioli
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HVDC Ground Electrode Heat Dissipation

IEEE Power Engineering Review, 1987
The temperature distribution in the soil surrounding High Voltage Direct Current (HVDC) ground electrodes is determined by using a finite-difference method. This, commonly used numerical method of solution, was selected due to its practicability in obtaining engineering solutions involving both complex ground electrode geometries and boundary ...
H. Greiss, B. L. Allen, P. J. Lagace, D. Mukhedkar   +3 more
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Dissipative heating and hurricane intensity

Meteorology and Atmospheric Physics, 1998
Dissipative heating has not been accounted for in either numerical simulations of hurricanes or in theories for the maximum intensity of hurricanes. We argue that the bulk of dissipative heating occurs in the atmospheric boundary layer near the radius of maximum winds and, using both theory and numerical simulation, show that dissipative heating ...
M. Bister, K. A. Emanuel
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Dissipation of Heat by Radiation

Transactions of the American Institute of Electrical Engineers, 1930
Heat dissipation is an ever-present factor affecting the design and operation of many kinds of electrical equipment. Usually, the problem is to get rid of heat due to losses. Sometimes the problem is how to conserve heat. Radiation, or convection, or conduction, or combinations of these, enter into all cases.
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Dissipative heating in climate models

Quarterly Journal of the Royal Meteorological Society, 2000
AbstractThe various strategies towards dissipative heating in meteorological models are reviewed. The strategies are implicit formulations, explicit formulations, and exclusion. A thermodynamic formulation based on dry static energy, which has long been used in hydrostatic models, implicitly includes dissipative heating.
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