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Effect of thickness and physical properties of films onthe thermal behavior of a moving rough interface

Published online by Cambridge University Press:  22 March 2004

A. Baïri ,
J. M. García de María  and
N. Laraqi
A. Baïri*
Affiliation:
Department of Heat Transfer, University of Paris X, LEEE, EA. 387, 1 Chemin Desvallières, 92410 Ville d'Avray, France
J. M. García de María
Affiliation:
Departamento de Física Aplicada (EUITI), Universidad Politécnica de Madrid, Ronda de Valencia, 3, 28012 Madrid, Spain
N. Laraqi
Affiliation:
Department of Heat Transfer, University of Paris X, LEEE, EA. 387, 1 Chemin Desvallières, 92410 Ville d'Avray, France
*
[email protected]
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Abstract

Films are used in a wide range of electronic and mechanical technologies. An analytical solution is developed in this paper in order to investigate the effect of films on the thermal behavior at the vicinity of a static or moving rough interface. The roughness is modeled by multiple circular contacts which are assumed identical and regularly distributed over the interface according to a square net. The governing equations are solved by using the finite complex Fourier transform and the finite cosine Fourier transform. The developed solution is explicit and allows to calculate the three-dimensional steady-state temperature regardless of the velocity and the ratio of the real contact area to the apparent one. Thus, this solution can be also used for other applications such as the moving laser beam. The comparisons performed show a good agreement of our results with available models. We study the effects of: thermal properties of materials, the relative size of micro-contacts, the film thickness and the velocity, on the thermal behavior of the body.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 26 , Issue 1 , April 2004 , pp. 29 - 34
Copyright
© EDP Sciences, 2004

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