近自由面水下爆炸气泡与结构相互作用数值计算研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (18) : 13-18.

论文

李健1，潘力1，林贤坤1，荣吉利2，项大林2

作者信息 +

NUMERICAL STUDY OF INTERACTION BETWEEN BUBBLE AND STRUCTURE NEAR FREE SURFACE IN UNDERWATER EXPLOSION

Lijian1, Panli1, Lin Xiankun1, Rong Jili2 , Xiang Dalin2

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文章历史 +

摘要

近自由面水下爆炸气泡在自由面与结构共同作用下会呈现出非常复杂的运动特性，利用体积加速度模型确定气泡运动的初始半径及速度，针对流场特点，通过自行开发的子程序实现了流场初始条件与边界条件的定义，基于MSC.DYTRAN有限元软件的流-固耦合处理方法对近水面水下爆炸气泡与结构相互作用全过程进行数值模拟，通过与现有实验数据的对比，验证有限元模型建立和子程序开发的正确性。以此为基础，研究气泡与自由面、气泡与结构的距离以及结构初始角度等参数对气泡运动特性、射流角度、射流速度的影响规律，计算模型、方法及结果对相关的工程研究和计算具有一定参考价值。

Abstract

From the complex phenomenon of the interaction between bubble and structure near free surface in underwater explosion. Volume-acceleration model was introduced to determine the initial condition for bubble. Subroutines defined the initial value and boundary conditions of fluid field were developed by using MSC.DYTRAN finite element analysis software. The dynamic behavior of bubble near free surface and structure including jet of bubble and dome of free surface was simulated and analyzed. The computational result of the behavior of bubble was compared with the experimental results.. The interactions between bubble and structure were studied systematically and summarized. Relative law show that the dynamic behaviors of bubbles have close relation with distance parameter and initial angle of structure. The research has value to correlative theory research and engineering calculation.

导出引用

李健1，潘力1，林贤坤1，荣吉利2，项大林2. 近自由面水下爆炸气泡与结构相互作用数值计算研究[J]. 振动与冲击, 2015, 34(18): 13-18

Lijian1, Panli1, Lin Xiankun1, Rong Jili2,Xiang Dalin2. NUMERICAL STUDY OF INTERACTION BETWEEN BUBBLE AND STRUCTURE NEAR FREE SURFACE IN UNDERWATER EXPLOSION[J]. Journal of Vibration and Shock, 2015, 34(18): 13-18

参考文献

[1] 王诗平, 朱枫, 吴超, 等. 爆炸气泡与舰船相互作用的相似性方法研究[J]. 中国造船, 2012, 53(2):30-38.
WANG Shi-ping, ZHU Feng, WU Chao, et al. Similarity method in scaled experiment of interaction between underwater explosion bubbles and ships[J]. Shipbuilding of China, 2012, 53(2):30-38. (in Chinese)
[2] 王诗平, 孙士丽, 张阿漫, 等. 冲击波和气泡作用下舰船结构动态响应的数值模拟[J]. 爆炸与冲击, 2011, 31(4): 367-372.
WANG Shi-ping, SUN Shi-li, ZHANG A-man, et al. Numerical simulation of dynamic response of warship structures subjected to underwater explosion shockwaves and bubbles [J]. Explosoin and Shock Waves, 2011, 31(4): 367-372. (in Chinese)
[3] 初文华, 张阿漫, 王诗平. 壁面与自由液面联合作用下气泡动态特性实验研究[J]振动与冲击,2013, 32(13):112-117.
CHU Wen-hua, ZHANG A-man, WANG Shi-ping. Experimental study on bubble pulse features under combined action of wall and free surface[J]. Journal of Vibration and Shock, 2013, 32(13):112-117. (in Chinese)
[4] 张弩, 宗智, 张文鹏, 等.基于双渐进方法的水下爆炸气泡载荷作用下舰船的动态响应分析[J]. 振动与冲击, 2012, 31(23): 50-56.
ZHANG Nu，ZONG Zhi，ZHANG Wen-peng, et al. Dynamic response of a ship hull stucture subjected to an underwater explosion bubble based on doubly asymptotic approximation method[J]. Journal of Vibration and Shock, 2012, 31(23): 50-56. (in Chinese)
[5] 牟金磊, 李海涛. 固支方板在水下爆炸气泡射流作用下动态响应[J]. 噪声与振动控制, 2012, 6: 125-129.
MU Jin-lei, LI Hai-tao. Dynamic response of stiffened square plate subjected to jets load due to underwater explosion bubbles[J]. Noise and Vibration Control, 2012, 6: 125-129. (in Chinese)
[6] 刘云龙, 汪玉, 张阿漫. 有倾角的竖直壁面附近气泡与自由面相互作用研究[J]. 物理学报,2013, 62(21):267-276.
Liu Yun-Long Wang Yu Zhang A-Man. Interaction between bubble and free surface near vertical wall with inclination[J]. Acta Physica Sinica, 2013, 62(21):267-276. (in Chinese)
[7] Li J , Rong J L. Bubble and free surface dynamics in shallow underwater explosion[J]. Ocean Engineering, 2011, 38: 1861-1868.
[8] Pearson A, Cox E, Blake J R, et al. Bubble interactions near a free surface[J]. Engineering Analysis with Boundary Elements, 2004, 28(4):295–313.
[9] Chahine G L. Interaction between an oscillating bubble and a free surface[J]. Tran. ASME, J. Fluids Eng, 1977, 99(4): 709-716.