G-1-3 MGL calculation of rarefied gas flow in narrow gap bounded by textured surface

Abstract

The effect of texturing on the fluid pressure of rarefied gas flow between narrow gap, where the gas cannot be treated as continuum fluid even at atmospheric pressure, was investigated. 1-dimensional MGL calculation was conducted for calculating such rarefied gas flows bounded by textured surface. It was confirmed that the same results previously reported with DSMC calculation is properly reproduced by the MGL calculation employing periodic boundary condition and the assumption of mass conservation in a simulated region.