空气中爆炸时爆炸波的超压函数

Overpressure Functions of Blast Waves for Explosions in Air

用解析方法对空气中爆炸时爆炸波超压的变化规律进行了理论分析。引入超压传递的矢量速度函数 ,根据超压的连续性变化条件得到了超压变化过程的基本方程 ,运用所得到的基本方程 ,给出了一维爆炸波正相函数的一般形式 ,所给出的几个常用的爆炸波压力函数式表明了此超压函数具有一般性。此外 ,还对一级近似条件下的超压函数作了应用分析。

The regularity of blast wave overpressures for explosions in air was studied analytically.On the bases of an introduced overpressure transmission function with vector form and the continuum condition of overpressure propagation,a governing equation was suggested.From the equation,a general overpressure function is presented.The function is concerned with the overpressure of one dimensional blast waves in positive phases.Several forms of overpressure functions given previously were also derived from the function.This fact shows the generality of the function suggested.