Effect of impact breakup of solid and liquid particles on two-phase supersonic flow about solids

Experimental modeling of processes occurring when a supersonic gaseous suspension containing solid or liquid particles flows about a freely flying body is carried out. Considered is the situation when the particles reach the surface of the body intact and are not entrained by the flow. It is found that, after the particles break into pieces and disperse, exchange between the phases intensifies, causing a change in the position of the bow shock wave and the formation of a layer with an increased concentration of the particles. Collisions of solid and liquid particles with the solid surface are modeled. The observation of the particle dispersion pattern after impact breakup and measurement of the particle velocity shed light upon a mechanism behind the formation and movement of a finely dispersed particle cloud that arises when initial particles experience impact breakup. It is found that the postcollision dispersion of the particles generates two shock waves originating from the interaction zone.