Analytical solution for constriction resistance with interstitial fluid in the gap

被引：0

作者：

A. K. Das

S. S. Sadhal

机构：

[1] Applied Materials,

[2] Inc.,undefined

[3] PVD Technology,undefined

[4] M/S 2402,undefined

[5] Santa Clara,undefined

[6] CA 95054,undefined

[7] USA,undefined

[8] Department of Mechanical & Aerospace Engineering,undefined

[9] University of Southern California,undefined

[10] Los Angeles,undefined

[11] CA 90089-1453,undefined

[12] USA,undefined

来源：

Heat and Mass Transfer | 1998年 / 34卷

关键词：

Contact Resistance; Closed Form Expression; Interstitial Fluid; Thermal Contact; Form Expression;

D O I：

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学科分类号：

摘要：

An analysis of the thermal constriction resistance between two semi-infinite solids in contact has been carried out to study the effects of the interstitial medium. The thermal contact is modeled as a three-media problem with finite resistivities for each medium, together with complete interfacial coupling between the solids and the interstitial fluid. Analytical solutions are obtained for a periodic array of two-dimensional gaps of circular segment profiles flanked by flat contacting surfaces. A corrective-iterative technique is used to account for the interaction between the gaps to obtain a closed form expression for the contact resistance in terms of known parameters. For the special case of zero-thickness adiabatic gaps, the present solution compares very well with the available analytical solution for gap fraction values of the κg≤0.7. The resistance is observed to be a strong function of gap conductivity and gap thickness, especially at lower values of these parameters.

引用

页码：111 / 119

页数：8