Tensorial slip theory for gas flows and comparison with molecular dynamics simulations using anisotropic gas-wall collision mechanism

Abstract : In this paper, we examine the anisotropic slip theory for gas flows based on tangential accommodation coefficients and compare it with molecular dynamics (MD) results. A special gas-wall boundary condition is employed within MD simulations to mimic the anisotropic gas-wall collision mechanism. Results from MD simulations with different surface orientations show a good agreement with the slip quantification proposed in this work.