DSMC/MGL comparisons of stresses on slider air bearing with nano meter spacings

Summary form only given. In a computer disk drive, the spacing between the slider and disk has been decreased and the tangential force or shear stress as well as the normal force or pressure on the slider surface becomes significant for design considerations. In this paper, we calculated these stress distributions using a direct simulation Monte Carlo (DSMC) method and molecular gas-film lubrication (MGL) analyses with Kang´s formulation for shear stress, and examined in detail the influences of the surface accommodation coefficients on the stresses, which characterize the gas-surface scattering at the boundary surfaces.