凝聚炸药爆轰波在高声速材料界面上的折射现象分析

发布时间：2018-03-24 22:33

本文选题：爆轰波　切入点：高声速材料　出处：《物理学报》2016年02期

【摘要】：凝聚炸药爆轰在边界高声速材料约束下传播时,爆轰波会在约束材料界面上产生复杂的折射现象.本文针对凝聚炸药爆轰波在高声速材料界面上的折射现象展开理论和数值模拟分析.首先通过建立在爆轰ZND模型上的改进爆轰波极曲线理论给出爆轰波折射类型,然后发展一种求解爆轰反应流动方程的基于特征理论的二阶单元中心型Lagrange计算方法来数值模拟典型的爆轰波折射过程.从改进爆轰波极曲线理论和二阶Lagrange方法数值模拟给出的结果看出,凝聚炸药爆轰波在高声速材料界面上的折射类型有四种:反射冲击波的正规折射、带束缚前驱波的非正规折射、带双Mach反射的非正规折射、带λ波结构的非正规折射.
[Abstract]:When the condensed explosive detonation propagates under the restraint of the high acoustic velocity material at the boundary, Detonation wave can produce complex refraction phenomenon at the interface of confined material. In this paper, the theory and numerical simulation analysis of detonation wave refraction of condensed explosive at the interface of hypersonic material are carried out. Firstly, the ZND mode of detonation is established. The refraction type of detonation wave is given by the theory of modified detonation wave pole curve. Then a second order central Lagrange method based on characteristic theory is developed for solving detonation reaction flow equation to simulate typical detonation refraction process numerically. The improved detonation wave polar curve theory and the number of second-order Lagrange method are used to simulate the detonation wave refraction process numerically. Value simulation results show that, There are four refraction types of detonation waves in condensed explosives at the interface of hypersonic materials: normal refraction of reflected shock wave, irregular refraction with bound front wave, irregular refraction with double Mach reflection and irregular refraction with 位 wave structure.
【作者单位】：北京应用物理与计算数学研究所计算物理重点实验室;
【基金】：国家自然科学基金(批准号:11272064)资助的课题~~
【分类号】：O381

【相似文献】