利用任意拉格朗日欧拉(ALE)算法和炸药爆轰产物的JWL状态方程,针对有障碍物阻挡时空气冲击波的环流现象进行数值模拟,得到在爆源周围有障碍物时爆炸场初始发展、环流情况及整个传播过程,并分析了空气冲击波的环流规律。研究结果表明,所采用的方法可以很好地描述空气冲击波环流流场参量分布与变化规律,数值模拟结果符合物理规律。

Numerical Simulation of Blast Shock Waves Around-flow EffectSHEN Zu-wu~(1,2),ZHANG Yao-hui~1,XIE Wei-ping~1,WANG Tian-yun~3(1.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;2.Graduate School,Wuhan University of Technology,Wuhan 430070,China;3.The 3th Academy of Corps of Engineers,Luoyang 471023,China)Using ALE algorithm and the JWL state equation for the product of explosive detonation,the numerical simulation of which the shock wave flowed around an obstacle was conducted.The initial development of explosive field and the circle-flow behavior,the entire spread course with an obstacle around an explosive source was obtained and the law of shock wave around-flow was analyzed.The research result indicated that the distribution and change of around-flow-field parameters could be fairly described by simulation method in this paper.The simulation result coincided with the law of physics.around-flow effect;ALE algorithm;blast shock waves;numerical simulation