Effect of pressure grads on convection in inner core of type II supernova

By adjusting the pressure grads in the stage of formation of the shock wave, a successful prompt explosion process has been numerically simulated through a progenitor model of 15Msolar, in which the effects of pressure grads on various convections, including the Rayleigh--Taloy (R-T) convection, the lepton driven convection and the negative entropy grads driven convection, in an inner core are analysed. The simulation results show that the increase of the pressure grads in the inner core region may cause a powerful convection, which causes energy transfer from the inner core to the shock wave rapidly and efficiently.