水下爆炸气泡与浮体结构相互作用的研究

王加夏 1,宗智 1,2,周力 1,姜明佐 3

振动与冲击 ›› 2016, Vol. 35 ›› Issue (12) : 41-49.

PDF(3667 KB)
PDF(3667 KB)
振动与冲击 ›› 2016, Vol. 35 ›› Issue (12) : 41-49.
论文

水下爆炸气泡与浮体结构相互作用的研究

  • 王加夏 1 , 宗智 1,2,周力 1,姜明佐 3
作者信息 +

The interaction of an underwater explosion bubble dynamics and a floating structure#br#

  •  WANG Jia-xia 1   ZONG Zhi 1,2  ZHOU Li 1  JIANG Ming-zuo3
Author information +
文章历史 +

摘要

基于势流理论,利用三维边界积分法模拟水下爆炸气泡与其附近浮体之间的相互作用,同时考虑到自由液面对气泡特性的影响。该数值计算结果与电火花气泡实验结果吻合良好,验证了该数值方法的有效性。通过爆点与自由液面的距离,爆点与结构的距离,结构的运动响应三个方面来研究近自由面时,气泡、浮体结构和自由液面之间的耦合特征。尤其关注它们对气泡动力特性,结构上的压力载荷以及自由液面升高等方面的影响。

Abstract

The evolution of underwater explosion bubble beneath floating structure is numerically simulated using three-dimensional (3D) boundary integral method (BIM) in an inviscid, incompressible and irrotational flow. The effect of free surface on bubble dynamics is also considered. The present method is well validated by comparing the numerical simulations with the experimental results. For free-floating structure, the distance between bubble and free surface, distance between bubble and structure and two dynamic responses: fixed and rigidly moving are separately investigated to research the interaction of bubble, floating structure and free surface. Their influence on bubble dynamics, pressure on the structure and free surface are especially concerned.
Key words: underwater explosion bubble; boundary integral method; floating structure; rigid body motion
 
 

关键词

水下爆炸气泡 / 边界积分法 / 浮体结构 / 刚体运动

Key words

underwater explosion bubble
/ boundary integral method / floating structure / rigid body motion

引用本文

导出引用
王加夏 1,宗智 1,2,周力 1,姜明佐 3. 水下爆炸气泡与浮体结构相互作用的研究[J]. 振动与冲击, 2016, 35(12): 41-49
WANG Jia-xia 1 ZONG Zhi 1,2 ZHOU Li 1 JIANG Ming-zuo3 . The interaction of an underwater explosion bubble dynamics and a floating structure#br#[J]. Journal of Vibration and Shock, 2016, 35(12): 41-49

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