当材料界面收到强冲击,材料两边的压力和速度会出现大的梯度区或是突变,这种情况下,数值模拟变的异常困难。采用Runge-Kutta不连续Galerkin方法对强冲击对气气和气液界面的影响进行数值研究,虚拟流体法采用r GFM,限制器采用M=150的TVB限制器,结果显示:冲击非常容易传输通过气气界面,而冲击传输很难通过气液界面;强冲击对气液界面影响的数值模拟误差很小,效果良好;对于气气界面的模拟虽然能捕捉到激波,但是在高密度区的密度模拟上存在一定误差,还需继续改进。
when the material interface received strong impact,the large gradient zone or mutations of the pressure and velocity will appear on both sides,and in this case,the numerical simulation has become extremely difficult. Effect of strong impact on gas-gas and gas-liquid interface is studied numerically by Runge- Kutta discontinuous Galerkin method. Ghost fluid Method is r GFM and limiter is TVB limiter with M = 150,and the results showed that the impact is very easy to transfer to gas gas interface,and the impact of transmission is very difficult to through the gas-liquid interface; Error is very small when the impact of strong impact on the gas-liquid interface is on the numerical simulation,and the effect is good; The simulation of gas gas interface can capture the shock wave,but there are some error on the simulation of high density area,and it still need to continue to improve.