Suppression of a laminar separation by a spark discharge at a supersonic Mach number

摘要

The paper deals with control the shock wave/laminar boundary layer interaction (SWBLI) by a spark discharge. Incident shock wave generated by a wedge induced the separation of the boundary layer developed on the flat plate at M=1.43. The inflow boundary layer state was laminar. The quantitative measurements were performed by PIV. It was found that a turbulent spot generated by a spark discharge suppresses the separation zone. But the thermal spot increases the loss of total pressure in the boundary layer. The effect of the discharge power on the zone of SWBLI has been studied.