J054041 非金属表面に対するエネルギー適応係数の計測に関する研究([J05404]マイクロ・ナノスケールの熱流体現象(4))

概要

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The flow around micro-systems is so-called the high-Knudsen number flow. The flow field cannot be treated as a continuum and the thermal conduction should not be treated by ordinary Fourier's law. In high-Knudsen number flows, the gas-surface interaction becomes important and the energy accommodation coefficient is often employed to analyze heat transport phenomena. The energy accommodation coefficient varies depending on combination of surface materials and gas species. Thus, it is important to use the appropriate energy accommodation coefficient for each pair of surface and gas for accurate thermal management. In this report, we obtained the energy accommodation coefficients for argon in contact with platinum surface in accordance with the Low-Pressure method, using the theoretical heat flux equation expanded to transition regime. The experimental result was compared with previous result in literature, which reported a relation between the energy accommodation coefficient and the surface temperature, and they are in good agreement.
一般社団法人日本機械学会の論文
2011-09-11