单个装药浅层水中沉底爆炸的数值模拟

Numerical Simulation of Single Charge Explosion on Seabed in Shallow Water

采用 ALE算法 ,对单个装药浅层水中沉底爆炸进行了数值模拟。计算结果与实测结果较好地吻合。根据数值计算结果 ,分析了爆炸流场中冲击波传播规律 ;给出了不同时刻水中压力等值面分布 ,空间不同点压力时程曲线 ;分析了水底、水面对水中爆炸冲击波传播及对流场压力变化规律的影响。获得了浅层水中爆炸流场参量分布与变化规律的初步认识。

Numerical simulation of single charge explosion on seabed in shallow water was implemented with ALE algorithm. Next, propagation of shock waves in explosion flow field was analyzed according to simulation results. Subsequently pressure fringes of different moments and pressure history curves of different points in field were obtained. In addition, the effects of seabed and free surface on pressure of shock waves and pressure changes of fluid field were analyzed. As a result, a preliminary knowledge of the distribution and changes of explosion parameters in such cases was demonstrated in our paper.