TECHNICAL PAPERS: Conduction Heat Transfer

Influence of Flatness and Waviness of Rough Surfaces on Surface Contact Conductance

[+] Author and Article Information
S. Sunil Kumar, K. Ramamurthi

Propulsion Research and Studies Group, Liquid Propulsion System Centre, Trivandrum, India 695547

J. Heat Transfer 125(3), 394-402 (May 20, 2003) (9 pages) doi:10.1115/1.1565093 History: Received March 19, 2002; Revised December 05, 2002; Online May 20, 2003
Copyright © 2003 by ASME
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Representation of surface characteristics
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Physical model of a single asperity contact
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Physical representation of non-flat rough contact
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Descretization of the contact zone
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Computational flow diagram
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Comparison with earlier literature for non-wavy flat surfaces
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Effect of flatness deviation on actual area of contact for stainless steel and aluminum joints
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Influence flatness deviations on thermal contact conductance
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Inter-dependence of flatness and mean surface roughness
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Surface waviness influence on thermal contact conductance
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Comparison of experimental results with predictions and generalized correlation




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