Propagation of Non-Ideal Detonation Wave Confined by Inert Medium
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摘要: 为研究惰性介质约束下非理想爆轰波的传播问题，采用炸药与介质交界面处的压力/流线偏转匹配的激波极线法，结合爆轰冲击动力学方法和爆轰驱动程序，计算了爆轰波阵面的形状及压力分布。数值模拟结果与实验结果的对比分析证明，尽管细致描述爆轰波与介质的相互作用时需要全流场的全动力学模拟，但是相对简单的激波极线方法可以较好地预测该作用的影响，与美国Aslam等人的结论一致。Abstract: In order to have an insight into the propagation of non-ideal detonation wave confined by inert medium, the shock polar method relating the pressure/streamline-deflection matching condition at the explosive/inert medium interface was adopted. The detonation front shape and the pressure distribution were calculated by this method combined with detonation shock dynamics (DSD) method and the program describing detonation acceleration. Comparison between experimental data and numerical simulation results shows that although a detailed description for interaction between the detonation wave and the inert medium needs full hydrodynamic simulation in the complete flow field, a relatively simple shock polar analysis can also provide a good prediction of the interaction effect, which is consistent with the argument from Aslam et al. of United States of America.
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