Abstract

AbstractIn the currently widespread fractal and stochastic models of thermal contacts, the location of the contact spots formed from the interaction of the roughness asperities is not considered. Based on the results of the numerical solution of model two-dimensional problem of thermal contact, a significant effect of the location of these spots in the nominal contact area on the thermal contact conductance is determined. It is shown that the thermal contact conductance is not proportional to the fraction of the real contact area in the nominal area, and even small contact spots change it significantly.KeywordsThermal contact conductanceThermal conductivityRoughnessAsperityANSYS

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