INVESTIGATION OF THE HYSTERESIS PHENOMENA IN STEADY SHOCK REFLECTION USING KINETIC AND CONTINUUM METHODS

The problem of transition of planar shock waves over straight wedges i n steady flows from regular to Mach reflection and back was numericall y studied by the DSMC method for solving the Boltzmann equation and fi nite difference method with FCT algorithm for solving the Euler equati ons. It is shown that the transition from regular to Mach reflection t akes place in accordance with detachment criterion while the opposite transition occurs at smaller angles. The hysteresis effect was observe d at increasing and decreasing shock wave angle.