爆炸作用驱动液体抛撒初始阶段数值仿真

 针对灭火战斗部引战配合设计，研究爆炸作用驱动液体（水基灭火剂）抛撒初始阶段的特性。依据典型灭火战斗部的结构建立数值仿真模型，采用LS-DYNA软件进行仿真计算，分别获得了加载系数（驱动装药与液体的质量比）对壳体破裂时间和壳体破裂初期液体/空气界面运动速度的影响规律，以及液体/空气界面后续的运动特性。进行了同条件下爆炸驱动水基灭火剂抛撒实验，得到了不同加载系数条件下壳体破裂初期液体/空气界面的运动速度。实验结果与数值仿真结果吻合良好，表明所采用的数值仿真方法具有正确性和有效性，对相关问题的研究具有重要参考价值。

Numerical Simulation on Initial Stage of Liquid Dispersed under Explosion Drive

For fuze-warhead cooperation design on fire extinguishing warhead, characteristics on liquid (based-water extinguisher) dispersed under explosion drive were studied. The numerical simulation model was built based on representative fire extinguishing warhead structure. The numerical simulation was done by LS-DYNA program. The influence rule about loading coefficient (drive charge divide liquid mass) to the breach time on shell, the movement speed on liquid/air interface at the shell breach initial phase, and the movement characteristic on liquid-air interface after shell breach were obtained. With the same simulation condition, the experiment on based water extinguisher dispersed under explosion drive was done. For different loading coefficients, the liquid/air interface movement speed at shell breach initial phase was gained. The results between experiment and numerical simulation were in good agreement, which indicates that the numerical simulation method was correct and effective. The research outcomes may provide important reference to investigate the relevant problem.