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Numerical simulation of high-temperature thermal contact resistance and its reduction mechanism

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  • Donghuan Liu
  • Jing Zhang

Abstract

High-temperature thermal contact resistance (TCR) plays an important role in heat-pipe-cooled thermal protection structures due to the existence of contact interface between the embedded heat pipe and the heat resistive structure, and the reduction mechanism of thermal contact resistance is of special interests in the design of such structures. The present paper proposed a finite element model of the high-temperature thermal contact resistance based on the multi-point contact model with the consideration of temperature-dependent material properties, heat radiation through the cavities at the interface and the effect of thermal interface material (TIM), and the geometry parameters of the finite element model are determined by simple surface roughness test and experimental data fitting. The experimental results of high-temperature thermal contact resistance between superalloy GH600 and C/C composite material are employed to validate the present finite element model. The effect of the crucial parameters on the thermal contact resistance with and without TIM are also investigated with the proposed finite element model.

Suggested Citation

  • Donghuan Liu & Jing Zhang, 2018. "Numerical simulation of high-temperature thermal contact resistance and its reduction mechanism," PLOS ONE, Public Library of Science, vol. 13(3), pages 1-21, March.
    • Handle: RePEc:plo:pone00:0194483
    DOI: 10.1371/journal.pone.0194483
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