EXPERIMENTAL STUDY OF THE REVERSE FLOW IN THE FORWARD SEPARATION REGION IN A PULSATING FLOW AROUND A SPIKED BODY

摘要

The flow with a free-stream Much number M_∞ = 6 around a cylindrical body with a sharp spike is studied. The existence of a supersonic reverse flow for one of the phases of the pulsating flow regime is experimentally validated. A range of spike lengths is determined, which ensures a region of a supersonic reverse flow near the side surface of the spike. The time of existence of the supersonic reverse flow region is shown to be 0.15 of the, period of pulsations if the spike length equals the model diameter.