スリットを通過する希薄気体のモンテカルロシミュレーション : 上流と下流との間で大きな圧力比をもつ場合

概要

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The direct simulation Monte-Carlo method has been used to study the behaviour of the rarefied gas flow through the two-dimensional slits, where the pressure ratio between the upstream and the downstream of the slit is high enough to neglect the downstream pressure. In order to correct the error due to the limitation of the simulated physical-space, the equilibrium velocity distribution modified by the addition of the stream velocity normal to the boundary surface, instead of the equilibrium one, is assumed to the molecules which flow into the simulated region through the upstream boundary. About 16000 molecules of the hard sphere model and 800 cells are used in the calculation. The conductances of the slits calculated by the simulation are in good agreement with the experimental results.
一般社団法人日本機械学会の論文
1984-11-25