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Gas molecule-molecule interaction and the gas-surface scattering effect on the rarefied gas flow through a slit into a vacuum

  • Statistical, Nonlinear, and Soft Matter Physics
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Abstract

The effect of the gas molecule-molecule interaction and the gas-surface scattering on the gas flow through a slit into a vacuum are investigated in a wide range of the gas rarefaction using the direct simulation Monte Carlo method. To study the gas molecule-molecule interaction influence, we used the variable hard sphere and variable soft sphere models defined for an inverse-power-law potential and the generalized hard sphere model defined for the 12–6 Lennard-Jones potential. The Maxwell, Cercignani-Lampis, and Epstein models were used to simulate the gas-surface scattering. This study demonstrates that the gas molecule-molecule interaction can have a significant influence on the rarefied gas flow through a slit, while the influence of the gas-surface scattering is negligibly small. The presented numerical results are in agreement with the corresponding experimental ones.

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Authors and Affiliations

  1. Ural State University, Yekaterinburg, 620083, Russia

    O. Sazhin

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  1. O. Sazhin
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Correspondence to O. Sazhin.

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Sazhin, O. Gas molecule-molecule interaction and the gas-surface scattering effect on the rarefied gas flow through a slit into a vacuum. J. Exp. Theor. Phys. 108, 874–879 (2009). https://doi.org/10.1134/S1063776109050161

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  • DOI: https://doi.org/10.1134/S1063776109050161

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