阻抗梯度飞片加载下的超高速发射二维数值模拟方法  

Numerical Simulation Method for 2-D Hypervelocity Launcher Under the Graded Density Impactor Drives

作　　者：柏劲松[1] 谭华[1] 李平[1] 华劲松[1] 戴诚达[1] 陈森华[1] 

机构地区：[1]中物院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900

出　　处：《计算物理》2004年第4期305-310,共6页Chinese Journal of Computational Physics

摘　　要：　阻抗梯度飞片准等熵加载和超高速发射的二维数值模拟,在计算方法上集中体现了多介质、多界面、大变形、高密度比等特点.采用多介质流体高精度PPM计算方法,以VOF为基础研制MFPPM2二维计算程序,数值模拟Sandia实验室的超高速发射实验模型,获得了与Sandia实验室数值计算一致的结果.A numerical simulation method is presented for calculating two dimensional two-stage light-gas gun impacts to launch flier to hypervelocity. It uses the complex algorithm, concerned with the treatment of multi-materials, multi-interfaces, huge distortions and high density ratios etc. Basing on multi-fluid VOF and PPM methods, we develop the MFPPM2 shock wave physics code to simulate the Sandia hypervelocity impaction experimental configuration model. Some results from the MFPPM2 are given and appear to be in good agreement with those of the CTH code in Sandia Laboratory.

关 键 词：阻抗梯度飞片 数值模拟 超高速发射 准等熵加载 流体力学 

分 类 号：O35[理学—流体力学]