2003年
Various transport coefficients occurring in binary gas mixtures and their database
RAREFIED GAS DYNAMICS
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- 巻
- 663
- 号
- 開始ページ
- 106
- 終了ページ
- 113
- 記述言語
- 英語
- 掲載種別
- 研究論文(国際会議プロシーディングス)
- 出版者・発行元
- AMER INST PHYSICS
A steady state of a binary mixture of hard-sphere gases in the near continuum regime, where the Knudsen number is small, is considered in the case where the density and temperature variations are large, but the Mach number of the flow is as small as the Knudsen number. Thus, the flow vanishes in the continuum limit where the Knudsen number goes to zero. The set of fluid-dynamic-type equations in this case was derived by Takata and Aoki [Trunsp. Theor. Stat. Phys. 30, 205 (2001)] by means of a systematic asymptotic analysis of the Boltzmann equation. This set gives the correct behavior of the mixture in the continuum limit, i.e., it describes the ghost effect discovered by Sone et al. for a single-component gas [Phys. Fluids 8, 628 (1996)]. The set contains various transport coefficients that depend on the local properties of the gas. In particular, their dependence on the local concentration of one of the components cannot be obtained explicitly. In this paper, this unknown dependence is established numerically by a direct numerical analysis of the basic integral equations, and a database that provides the numerical values of the transport coefficients immediately for an arbitrarily specified local state of the mixture is constructed. The database makes the fluid-dynamic-type equations applicable to practical problems.
- リンク情報
- ID情報
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- ISSN : 0094-243X
- Web of Science ID : WOS:000183372100014