【摘要】 在爆炸作用驱动液体分散的过程中,爆炸冲击波在液体中的传播及其与气液界面间的相互作用,直接影响液体的性质改变和分散形态。利用导爆索在水中爆炸的方法,对此过程进行了实验研究,发现在气液界面处的液体性质已改变,有空化现象存在。利用Level-set方法和虚拟流体方法(GFM),对强激波与气液界面相互作用过程进行了数值模拟,通过对计算结果中压力分布和界面形状变化的分析,结合实验结果,进一步表明液体中会有空化现象产生。更多还原

【Abstract】 In the process of liquid dispersion drived by explosion,the liquid characteristics and dispersion feature may be directly affected by the propagation of explosion shock wave in liquid and the interaction in the gas-liquid interface.The process of liquid dispersion was tested by the method of exploding the detonating cord under water.The experimented results show that the liquid characteristics change and the cavitation phenomenal occurs near the interface.The interaction between the powerful shock wave and gas-liquid interface is simulated numerically by using level-set and GFM.The simulated results,such as the pressure distribution and interface shape,indicate also that the cavitation phenomenon occurs.更多还原