非球形水下爆炸气泡坍塌机制

黄超; 汪斌; 刘仓理; 张阿漫; 姚熊亮

doi:10.11858/gywlxb.2012.05.004

非球形水下爆炸气泡坍塌机制

doi: 10.11858/gywlxb.2012.05.004

1.
中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900；
2.
哈尔滨工程大学船舶工程学院，黑龙江哈尔滨 150001

详细信息

通讯作者:
黄超 E-mail:huangchao21cn@126.com

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出版历程
- 收稿日期: 2011-04-01
- 修回日期: 2011-06-17
- 发布日期: 2012-10-15

On the Mechanism of Non-spherical Underwater Explosion Bubble Collapse

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China;
2.
School of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China

摘要

摘要: 为研究非球形水下爆炸气泡的坍塌机制和射流特性，采用水下爆炸实验和数值模拟相结合的手段，研究了典型的柱形装药自由场水下爆炸气泡的运动过程。实验结果与数值模拟结果符合较好，通过对比发现，非球形水下爆炸气泡坍塌所形成的射流与球形气泡坍塌射流的行为存在差异。研究结果表明：非球形气泡的坍塌过程与气泡初始形态的局部曲率半径有关，初始气泡表面曲率半径大的区域的初始膨胀速度较曲率半径小的区域的小，坍塌时刻也较早，导致气泡产生非球形坍塌。
- 非球形气泡 /
- 气泡坍塌 /
- 射流 /
- 水下爆炸
Abstract: Experiment and simulation of cylindrical charge underwater explosion bubble motion has been conducted to investigate the collapse mechanism of non-spherical bubble and the behavior of its jet. The experimental results were compared against the numerical results for different configurations of charge. Results show that jet generated by a non-spherical bubble behaves different from that of a spherical bubble, which could be attributed to the variance of radius of curvature on the bubble interface. The collapse time for an initial bubble surface with bigger radius of curvature is earlier than that with smaller radius of curvature. As a result, the water jet may exhibit an asymmetric form.
- non-spherical bubble /
- bubble collapse /
- water jets /
- underwater explosion

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参考文献(14)

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