Article ID Journal Published Year Pages File Type
663480 International Journal of Heat and Mass Transfer 2006 15 Pages PDF
Abstract

The thermal state at a solid–solid contact with interfacial heat generation requires the knowledge of two macroscopic contact parameters: the thermal contact resistance (RTC) and the heat generation factor (α). RTC is already well defined by many theoretical models, on the other hand, α remains poorly known and was never studied in the case of electro-thermal contact. On the basis of a microscopic analysis of the coupled electrical and thermal phenomena in a current tube crossing two asperities in contact, we propose a model of the heat generation factor. This one is a combination of electrical resistivities and thermal conductivities of both materials in contact. Comparison of model to experimental data are presented and discussed.

Related Topics
Physical Sciences and Engineering Chemical Engineering Fluid Flow and Transfer Processes
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