Experimental Study of Dual Injections with a Cavity in Supersonic Flow

摘要

An experimental investigation was performed on the rectangular open cavity with upstream dual jets in supersonic flow. The flow over the cavity became unstable in all cases. Because a shear-layer was expanded at the aft wall of the cavity by the effect of the dual jets, a dual jets injection model can enhance the mixing characteristics. However, if the distance of the dual jets was close, it cannot obtain effective mixing characteristics inside the cavity in particular.