抄録
Gas-surface interaction is important in high Knudsen number flows, such as rarefied gas flows or micro/nano scale flows. Bulk averaged properties such as thermal and momentum accommodation coefficients are convenient for a simple analysis. On the other hand, the molecular beam scattering experiment is a very effective way to obtain valuable detailed information. It is important to clarify the relation between these results; therefore we investigated it by the Molecular Dynamics simulations. The molecular beam scattering experiment is reproduced and a scattering angular distribution is validated. Energy accommodation coefficients are obtained and validated for three conditions of surface temperature. The relation is analyzed by decomposing in normal and tangential values.
