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Pressure and shear stress distributions on the slider air-bearing surface were calculated using a molecular gas-film lubrication (MGL) equation and direct simulation Monte Carlo (DSMC) method with an accommodation coefficient α as a parameter, which characterizes the gas surface scattering at the boundary surfaces. As the accommodation coefficient α decreases, which means that the rates of diffuse reflection at boundary surface decreases, pressures and shear stresses decrease. Both MGL analyses and DSMC results agree well with each other.
Date of Publication: Sep 2002