Comparison of molecular dynamics and kinetic modeling of gas-surface interactions

A. Frezzotti, S.V. Gaastra - Nedea, A.J. Markvoort, P. Spijker, L. Gibelli

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Abstract

The interaction of a dilute monatomic gas with a solid surface is studied byMolecular Dynamics (MD) simulations and by numerical solutions of a recently proposed kinetic model. Following previous investigations, the heat transport between parallel walls and Couette flow have been adopted as test problems. The distribution functions of re-emitted atoms and the accommodation coefficients obtained from the two techniques are compared in different flow conditions. It is shown that the kinetic model predictions are close to MD results.
Original languageEnglish
Title of host publication26th International Symposium on Rarefied Gas Dynamics (RGD26), 20-25 July 2008, Kyoto, Japan
Place of PublicationJapan, Kyoto
Pages26167-
Publication statusPublished - 2008

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