熱尖端ポンプの気体分離効果に関する実験的研究 : 分子質量比の効果(バイオ・マイクロ・スポーツの流れ分子スケール(3),一般講演)

概要

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The gas separation effect of the thermal edge compressor, which is a newly devised pump driven by the thermally induced rarefied gas flow, is investigated experimentally for bynary mixtures (N_2-CO_2, He-Ne, and He-N_2). The result shows that the gas separation effect of this pump appears for various mixtures including those consist of polyatomic gases. The detected separation effect is similar to that firstly reported in Rarefied Gas Dynamics, 2008 (AIP) for He-Ar mixture; that is, the concentration of smaller molecules increases at low pressure end of the pump when the gas flow induced by the pump is choked by valve etc. The size of the variation of the concentration is roughly proportional to the molar mass ratio of the mixture, while a slight deviation is observed between the results for mixture of monatomic gases and that of monatomic-poliatomic gases.
日本流体力学会の論文
2009-09-02