Interaction of shock waves with a combined discontinuity in two-phase media. 2. Nonequilibrium approximation

Interaction of a shock wave and a motionless combined discontinuity separating two two-component mixtures with different initial volume concentrations is studied on the basis of numerical simulation of unsteady processes. The calculations were performed using a modified method of “coarse particles” and a high-accuracy TVD difference scheme adapted to calculation of two-phase flows. Flow parameters determined by analytical dependences coincide with those obtained by numerical simulation at large times of the process. Upon interaction of the shock wave and the combined discontinuity, the type of the transient or reflected shock wave may coincide with or differ from the type of the incident shock wave. The possibility of existence of a pressure difference at the combined discontinuity boundary, which was earlier predicted analytically, is confirmed.