Abstract
The thermal contact resistance of two solids touching each another was analyzed with particular reference to the shape of a single heat channel. This channel was assumed to have a cylindrical contour whose radius near the interface decreases gradually to the contact area forming a truncated cone. The contact resistance of the interface was found as a function of the cone angle, the ratio of the radii of the truncated cone and the properties of the materials involved. From a numerical solution it was found that the contact resistance can be described by the properties of the materials, the number of contact areas and a single function of the radii ratio and that, for small values of cot γ, the contact resistance is almost insensitive to the cone angle.
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