The three-dimentional laminar Navier-Stokes equations were solved for getting the gas film pressure and velocity distributions in the steady state, and the flow styles in the clearance were analyzed.

Simulating results show that laminar, turbulent and wavy flow states are simultaneously subsisting in the evaporating liquid thin-film, and turbulence appears in the arched wave before wipers.

For orifice compensated aerostatic bearings, entrance effect leads differences between actual pressure distributions and traditional laminar flow assumption in gas film of the bearings.