摘要
为评估强爆炸的毁伤效应,采用一维球对称辐射流体力学方程组,数值研究了不同高度强爆炸早期火球阵面、弹壳冲击波的形成发展过程,对计算结果进行了相似律分析。结果表明:随爆炸高度增加,火球阵面、弹壳冲击波扩张速度加快,火球扩张过渡阶段开始结束位置及持续范围增加,火球中心温度下降加快,辐射能量降低过程变慢;在火球阵面以冲击波扩张传播以后,火球阵面参量基本满足爆炸相似律。
For the evaluation of damage effects of strong explosion, the formation and developmental processes of radiation front and case shock ＂of early fireball of strong explosion for the different altitudes were calculated numerically by the equations of one-dimensional radiation hydrodynamics with spherical symmetry, the calculated results were analyzed using scaling theory. The results show that the ex- panding velocity of radiation front and case shock increases, the beginning and ending positions and sustaining area of transition of radiation front increase, the decreasing process of central temperature of fireball increases, and the decreasing velocity of radiation energy slows, with the increase of explosion altitude; the parameters in fireball front satisfy basically the similarity laws of explosion after the shock transition of the fireball fronts.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2009年第8期1078-1083,共6页
Acta Armamentarii
关键词
爆炸力学
强爆炸火球
辐射流体力学
数值研究
不同高度
explosion mechanics
fireball of strong explosion
radiation hydrodynamics
numerical investigation
different altitudes
