Fluidic control of cavity configurations at transonic and supersonic speeds

An experimental study has been conducted to investigate open and closed cavity configurations with and without fluidic control at transonic and supersonic speeds. The cavity models were of L/D = 2, 6, 11 and 18. The investigation was carried out at Mach numbers of 0.8, 1.4 and 1.7. The passive flow control technique employed wedges of 15 degrees, 30 degrees, 45 degrees and 60 degrees were placed at the leading and trailing edge of each cavity. Pressure measurements, and oil flow, were employed to examine the characteristics of the induced flowfield. Experimental results revealed the basic flow features and defined the cavity flow field types.