Abstract
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 κ g ≤0.7. The resistance is observed to be a strong function of gap conductivity and gap thickness, especially at lower values of these parameters.
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Received on 24 November 1997
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Das, A., Sadhal, S. Analytical solution for constriction resistance with interstitial fluid in the gap. Heat and Mass Transfer 34, 111–119 (1998). https://doi.org/10.1007/s002310050238
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DOI: https://doi.org/10.1007/s002310050238