固体壁面における気体分子反射特性の分子動力学法による解明 : 第2報,温度問題の場合(流体工学,流体機械)

概要

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The thermal problem of a rarefied gas between two parallel walls whose temperatures are different each other is considered. The characteristics of reflected gas molecules at solid surfaces are investigated by applying the molecular dynamics method for the interaction of gas molecule with the solid wall together with the DSMC method for the motion of gas molecule. The wall consists of platinum molecules and the gas is taken to be argon. We considered three cases of surface: smooth surface, rough surface and grooved surface in molecular scale. The surfaces physically adsorbed by xenon molecules are also considered. The temperature jump coefficients and the accommodation coefficients are obtained. It is shown that the distribution functions of the reflected molecules are well described by the Maxwell type boundary condition by taking proper accommodation coefficients.
2004-09-25