摘要
该研究基于Euler有限元方法建立了水下爆炸异相气泡动力学模型,将计算结果和气泡统一理论以及异相爆炸试验进行对比验证计算模型的有效性.通过和自由场单气泡进行对比分析,发现异相爆炸冲击波对气泡做功是异相爆炸气泡总能量增加的原因,相位差绝对值越接近π、距离参数越小气泡总能量损失越少,后产生的气泡会使先产生的气泡提前坍缩.气泡的射流方向受相位差影响,相位差为零时产生对向射流,其他相位差产生反向射流.
An underwater explosion out-of-phase bubbles dynamics model was developed based on the Eulerian finite-element method,with the calculation results compared to the unified bubble theory and the out-of-phase explosion experiment to validate the calculation model.Compared with the case of a single bubble in the free field,it is found that the work done by the shock wave of the out-of-phase explosion on the bubble is the cause for the increase of the total energy of the bubble.The closer the absolute value of the phase difference is toπ,the smaller the distance parameter is,and the less the total energy loss of the bubble is.The later bubble can cause the first bubble to collapse in advance.The jet direction of the bubble is influenced by the phase difference.When the phase difference is zero,jets are directed toward each other,but for other phase differences,the backward jets occur.
作者
唐皓
刘云龙
冯集团
鞠欣洋
张阿漫
TANG Hao;LIU Yunlong;FENG Jituan;JU Xinyang;ZHANG Aman(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,P.R.China;Nanhai Institute of Harbin Engineering University,Sanya,Hainan 572024,P.R.China)
出处
《应用数学和力学》
CSCD
北大核心
2023年第8期895-908,共14页
Applied Mathematics and Mechanics
基金
海南省财政科技计划(ZDKJ2021020)
国防基础科研项目(JCKY2021604B027)。
关键词
水下爆炸
Euler有限元
异相气泡
underwater explosion
Eulerian finite-element method
out-of-phase bubbles
