水平刚性面下方水下爆炸气泡垂向运动的理论研究

Pulsation dynamics of an underwater explosion bubble vertical migrating to a horizontal rigid plane

为了研究边界面对水下爆炸气泡脉动的影响,根据势流理论建立了水平刚性面下方在浮力作用下作垂向运动的水下爆炸气泡的理论模型,编制计算程序进行求解。对水下爆炸气泡脉动运动的特点、流场的速度和压力的分布、气泡引起的载荷形式进行了分析。结果表明此模型能够反映水下爆炸气泡和周围流体介质的运动规律,并能进行定量的计算。

In order to explore the effect of the boundary on the pulsation of underwater explosion bubble, the model of the bubble pulsation dynamics of an underwater explosion was proposed, based on the potential flow theory and considering the effects of proximity of the explosion bubble to a horizontal rigid plane, vertical migration of the bubble due to the hydrostatic imbalance. A computer program was used to solve the model. The pulsation dynamics, the distributing of velocity and pressure in the flow field and the loading of bubble pulsation were analyzed. The results show that the model can correctly describe the dynamic characteristics of the explosion bubble and the liquid around it. Quantificational results can be obtained by solving the model.