圆形舭部附近气泡与自由面非线性耦合研究

PDF(2263 KB)

振动与冲击 ›› 2016, Vol. 35 ›› Issue (6) : 127-131.

论文

圆形舭部附近气泡与自由面非线性耦合研究

田昭丽1,2，高利峰3，刘云龙1

作者信息 +

Study on the interaction betweenthe bubble and the free surface nearby the round bilge

TIAN Zhao-li1，2，GAO Li-feng3，LIU Yun-long1

Author information +

文章历史 +

摘要

用气泡动力学边界元模型分析圆形舭部附近气泡与自由面非线性耦合作用。基于不可压缩势流理论建立水下爆炸气泡动力学数值模型；针对自由面与壁面交界点须同时满足壁面边界条件、自由面边界条件的过约束问题，采用节点拆分方法结合交界处约束条件对传统数值模型进行改进；用所建数值模型对已有研究成果进行拓展，分析攻角、爆距对气泡与自由面动态特性影响规律，初步讨论浮力影响，以期为舰船抗冲击设计、研究提供参考。

Abstract

The nonlinear interaction between the underwater explosion bubble and the free surface nearby the round bilge is studied with the bubble dynamics model based on Boundary Element Method. Firstly, the numerical bubble dynamics model under the ideal and incompressible assumption is established in this paper. Then for the overconstrain problem caused by the intersection between the rigid wall and the free surface, the traditional numerical model is improved by introducing the double nodes method to split each intersection node up to2 parts and considering the continuity conditions. With the present model, the researches on the interaction between the bubble and complex boundaries are extended. The influences of the attack angle, the initial distance of the charge and the buoyancy on the bubble and free surface dynamics are analyzed respectively. The conclusion can provide references for the anti-shock research and design of the warships.

导出引用

田昭丽1,2，高利峰3，刘云龙1. 圆形舭部附近气泡与自由面非线性耦合研究[J]. 振动与冲击, 2016, 35(6): 127-131

TIAN Zhao-li1，2，GAO Li-feng3，LIU Yun-long1. Study on the interaction betweenthe bubble and the free surface nearby the round bilge[J]. Journal of Vibration and Shock, 2016, 35(6): 127-131

参考文献

[1] Blake J R, Gibson D C. Growth and collapse of a vapour cavity near a free surface[J]. Journal of Fluid Mechanics, 1981,111: 123-140.
[2] Chahine G L, Hsiao C T. 3DYNAFS© a three-dimensional free surface and bubble dynamics code bubble dynamics Version 4.1 [C]. Dynaflow, INC., User Manual,2006.
[3] 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.
[4] Wang Q X, Yeo K S,Khoo B C,et al. Strong interaction between a buoyancy bubble and a free surface. Theoretical and Computational Fluid Dynamics, 1996. 8(1): 73-88.
[5] Blake J R, Gibson D C. Cavitation bubbles near boundaries[J]. Annual Review of Fluid Mechanics, 1987, 19: 99-123.
[6] Wang Q X. The evolution of a gas bubble near an inclined wall[J]. Theoretical and Computational Fluid Dynamics, 1998, 12(1):29-51.
[7] Klaseboer E, Hung K C, Wang C, et al. Experimental and numerical investigation of the dynamics of an underwater explosion bubble near a resilient/rigid structure[J]. Journal of Fluid Mechanics, 2005,53(7): 387-413.
[8] Klaseboer E, Khoo B C, Hung K C. Dynamics of an oscillating bubble near a floating structure[J]. Journal of Fluids and Structures, 2005,10(2): 1-10.
[9] 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.
[10] 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 nearvertical wall with inclination[J]. Acta Physica Sinica,2013,62(21):267-276
[11] Wang Q X. Unstructured MEL modeling of nonlinear unsteady ship waves[J]. Journal of Computational Physics, 2005,210(1): 368-385.
[12] Ni B Y, Zhang A M, Wu G X. Numerical simulation of motion and deformation of ring bubble along body surface[J]. Applied Mathematics and Mechanics, 2013, 34(12): 1495-1512.
[13] Cole R H. Underwater explosion[M]. Princeton USA: Princeton University Press,1948.
[14] Zhang A M, et al. Numerical simulation of column charge underwater explosion based on SPH and BEM combination[J]. Computers & Fluids, 2013,71(30): 169-178.
[15] Wang C, Khoo B C, Yeo K S. Elastic mesh technique for 3D BIM simulation with an application to underwater explosion bubbles[J]. Computers & Fluids, 2003,32(9): 1195-1212.
[16] Turangan C K, Ong G P,Klaseboer E,et al. Experimental and numerical study of transient bubble-elastic membrane interaction[J]. Journal of Applied Physics, 2006,100(5): 054910.
[17] Best J P, Kucera A. A numerical investigation of non-spherical rebounding bubbles[J]. Journal of Fluid Mechanics, 1992,245: 137-191.