scholarly journals Measured Horizontal Temperature Gradients Constrain Heat Transfer Mechanisms in Greenland Ice

2017 ◽  
Vol 44 (19) ◽  
pp. 9778-9785 ◽  
Author(s):  
Benjamin H. Hills ◽  
Joel T. Harper ◽  
Neil F. Humphrey ◽  
Toby W. Meierbachtol
Keyword(s):  
Heat Transfer ◽  
Temperature Gradients ◽  
Horizontal Temperature Gradients ◽  
Transfer Mechanisms

scholarly journals On the motion of a fluid heated from below

1938 ◽  
Vol 165 (921) ◽  
pp. 216-228 ◽  
Author(s):  
R. J. Schmidt ◽  
O. A. Saunders ◽  
Sydney Chapman
Keyword(s):  
Heat Transfer ◽  
Experimental Error ◽  
Temperature Gradients ◽  
Lower Plate ◽  
Theoretical Formula ◽  
Optical Refraction ◽  
Higher Temperature ◽  
The Difference ◽  
Horizontal Temperature Gradients ◽  
Moving Fluid

In some previous experiments (Schmidt and Milverton 1935) a layer of water between two horizontal plates was slowly heated from below. The critical temperature difference at which the water began to move was found from a change in the slope of the curve relating the difference of temperature between the plates and the rate of supply of heat to the lower plate. An optical refraction (Saunders and Fishenden 1935) method was also used for finding the critical condition, and the results found by the two methods agreed and conformed to a theoretical formula of Jeffreys (1928) within the limits of experimental error. The present experiments were undertaken to find whether any change in the type of motion occurs at higher temperature differences, and also to study further the vertical and horizontal temperature gradients in the moving fluid using the optical method. It was also thought of interest to perform experiments with air instead of water. An improved apparatus was used, in which the downward heat loss from the lower plate could be measured, so that the actual heat transfer between the plates could be found.

Heat Transfer Mechanisms for Condensation and Vaporization Inside a Microfin Tube

2002 ◽  
Vol 9 (1) ◽  
pp. 25-37 ◽  
Author(s):  
Davide Del Col ◽  
Ralph L. Webb ◽  
Ram Narayanamurthy
Keyword(s):  
Heat Transfer ◽  
Transfer Mechanisms

Numerical investigation for the heat transfer mechanisms between subchannels of bar rod bundles cooled by liquid sodium

2021 ◽  
Vol 161 ◽  
pp. 108460
Author(s):  
X.A. Wang ◽  
Dalin Zhang ◽  
Mingjun Wang ◽  
Yandong Hou ◽  
Wenxi Tian ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Numerical Investigation ◽  
Liquid Sodium ◽  
Rod Bundles ◽  
Transfer Mechanisms

scholarly journals Combined Heat Transfer Mechanisms in the Porous Char Layer Formed from the Intumescent Coatings under Fire

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 200
Author(s):  
Lingyun Zhang ◽  
Yupeng Hu ◽  
Minghai Li
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Thermal Conduction ◽  
Total Heat ◽  
Surface Radiation ◽  
Total Heat Transfer ◽  
Char Layer ◽  
Competition Result ◽  
Transfer Mechanisms ◽  
Combined Heat Transfer

This study examines the combined heat transfer by thermal conduction, natural convection and surface radiation in the porous char layer that is formed from the intumescent coating under fire. The results show that some factors, such as the Rayleigh number, conductivity ratio, emissivity, radiation–conduction number, void fraction and heating mode have a certain effect on the total heat transfer. In addition, the natural convection of the air in the cavity always inhibits surface radiation among the solid walls and thermal conduction, and the character of the total heat transfer is the competition result of the three heat transfer mechanisms.

scholarly journals Heat transfer mechanisms in bubbly Rayleigh-Bénard convection

2009 ◽  
Vol 80 (2) ◽  
Author(s):  
Paolo Oresta ◽  
Roberto Verzicco ◽  
Detlef Lohse ◽  
Andrea Prosperetti
Keyword(s):  
Heat Transfer ◽  
Bénard Convection ◽  
Benard Convection ◽  
Rayleigh Benard Convection ◽  
Rayleigh Benard ◽  
Transfer Mechanisms
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