INTERACTION OF A TRANSIENT SHOCK WAVE WITH A CAVITY FILLED WITH DISPERSED PARTICLES

Abstract

The flow of gas in plane shock waves sliding along an impermeable surface in the presence of a rectangular recess on it, in which solid dispersed particles are suspended, is numerically investigated. The equations of mechanics of multiphase media are used to simulate the motion of a gas with particles (gas suspension). At the same time, the gas phase was considered ideal and calorically perfect, and the particles of the dispersed phase were incompressible and monodisperse. Some patterns of the behavior of a dust cloud in a cavity during the interaction of a nonstationary shock wave with a triangular velocity profile with a notch have been established. Velocity vector fields in the vicinity of the cavity are constructed, showing the appearance of vortex flows inside the cavity. It is shown that as a result of the interaction of the shock wave with the recess, dispersed particles, being involved in the gas flow, leave the recess area.