具有引力场的气体中激波传播的近似理论  

APPROXIMATE THEORY OF PROPAGATION OF SHOCK WAVES IN GAS WITH GRAVITATION

作　　者：王继海[1] 

机构地区：[1]北京应用物理与计算数学研究所

出　　处：《爆炸与冲击》1990年第4期289-296,共8页Explosion and Shock Waves

摘　　要：本文在三维不定常流体力学特征理论的基础上,运用CCW方法,获得了激波速度的变化和激波阵面曲率、引力的大小和方向之间的解析关系,讨论了引力场对激波的加强和减弱的影响以及超新星爆炸中反弹激波的问题。利用得到的激波面积变化公式,给出了二、三维激波在引力场作用下传播问题的模拟处理方法。作为简单的例子,具体地研究了引力场变密度气体中强激波传播问题。In this paper, the relation connecting the vatiation of' the shock velocity, curvature of the shock front and gravitation is obtained by using the characteristics theory of non-stationary three-dimensional hydrodynamic equations and CCW method. The effect of gravitation on the shock propagation and its application to the bounce shock Wave in supernova explosions are discussed. By using the given area function of the shock front, the method of simulation of the three-dimensional shock propagation with gravitation is pre- sented. As a simple example, the strong shock wave propagation in gas with gravitation and the varied density ahead of the shock is investigated.

关 键 词：引力场 气体 激波 近似理论 超新星 

分 类 号：O354.5[理学—流体力学]