Abstract: The research work on interaction of shock wave with boundary layer in aerodynamics is reviewed, including its general characteristics, theoretical and experimental researches on interaction of shock wave with boundary layer in externally pressurized gas bearings. With the developments of CFD and micro-fluid testing technology, the pressure distribution, velocity distribution, Mach number distribution in the clearance can be simulated by computer with proper turbulence models according to the flow feature in the separate parts of fluid field, and experimentally tested. A deeper research of the theory on interaction of shock wave with boundary layer in externally pressurized gas bearings will be conducted, and further comprehension of its bearing performance of the inlet region, outlet corner region and bearing feature in the clearance will be advanced.

Key words: Boundary layer, Gas bearing, Shock wave