摘要
本文采用球面爆炸的活塞推进模型和对间断解具有高分辨率的二阶Godunov型有限差分方法,以两类化爆试验值作依据,通过恰当调整运动活塞边界条件,数值重构了实际半球形爆炸波的部分流场.方法简单、可靠,所得结果可用于评估任意同类型炸药一维爆炸波的远场效应。
In this paper, on the basis of experimental data of two kinds of chemical explo-. sions, the piston-pushing model of spherical blast-waves and the second-order Godunov-type scheme of finite difference methods with high identification to discontinuity are used to the numerical reconstruction of part of an actual hemispherical blast-waveflow field by properly adjusting the moving boundary conditions of a piston. This method is simple and reliable. It is suitable to the evaluation of effects of the blast-wave flow field away from the explosion center.
出处
《应用数学和力学》
EI
CSCD
北大核心
1989年第10期881-887,共7页
Applied Mathematics and Mechanics