Experimental study on bubble pulse features and plume under hypobaric condition

PDF(2341 KB)

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 37-42.

Cui-jie1，Cui-pu2，Zhou Sai-bei1，Yao Xiong-liang2

Author information +

History +

Abstract

Near-field underwater explosion bubble will be coupled with the hull, free surface of liquid due to prodigious buoyancy. This problem can’t be solved by theory or numerical method, because of the complexity of the boundary and the sensitivity of the bubble breaking controlled by parameters. The similarity with the real situation can’t be guaranteed because current research methods mostly adopt smaller bubble which generates smaller buoyancy. In order to study on the interaction between near-field bubble and free surface of liquid, a multi-function experimental apparatus operating under reduced air pressure is designed according to the similarity theory of underwater explosion bubble. The changing processes of bubble form near free surface and different phenomena of bubble plume were obtained through the experiment considering buoyancy changing. Finally, on the basis of a large amount of experimental data, the change laws of motion period of bubble near free surface, jet velocity and height of bubble plume, etc. with the variation of distance and buoyancy were found. The work provides references for the relevant theoretical and numerical research.

Key words

pressure reduction

/ bubble / free surface / bubble plume / experiment

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Cui-jie1，Cui-pu2，Zhou Sai-bei1，Yao Xiong-liang2. Experimental study on bubble pulse features and plume under hypobaric condition[J]. Journal of Vibration and Shock, 2015, 34(19): 37-42

References

[1] Benjamin T. B., Ellis A.T. The collapse of cavitation bubbles and the pressures thereby produced against solid boundaries[J]. Philosophical Transactions of the Royal Society London A, 1966, 260: 221-240P.
[2] Chahine G. L., Frederick G. S., Lambrecht C. J., et al. Spark-generated Bubbles as Laboratory-scale Models of Underwater Explosions and Their Use for Validation of Simulation Tools[J]. SAVIAC Proceedings 66th Shock and Vibrations Symposium, Biloxi, MS, 1995, 2: 265-276P.
[3] Dadvand A., Khoo B. C.. A collapsing bubble-induced microinjector: an experimental study[J]. Exp Fluids, 2009(46):419–434P.
[4] 张阿漫，王超，王诗平等. 气泡与自由液面相互作用的试验研究[J]，物理学报，2012，61(8)： 1-13P.
Zhang A.M.,Wang C., Wang S.P., et al. Experimental study of interaction between bubble and free surface[J]. Acta. Physica. Sinca, 2012,61(8):1-13P.
[5] Zhang A.M., Li S., Cui J., et al. Study of a bubble splitting after the jet impact above a rigid wall[J]. physics of fluids(submitted), 2015.
[6] 崔杰. 近场水下爆炸气泡载荷及对结构毁伤试验研究: [D]工学博士学位论文，哈尔滨：哈尔滨工程大学，2013.
Cui J. Experimental Study on Underwater Explosion Bubble Loads and Damage on the Structure Nearby: [D] A Dissertation for the Degree of D. Eng., Harbin: Harbin Engineering University, 2013.
[7] Zhang A.M., Cui P., Cui J. Experimental study on bubble dynamics affected by buoyancy[J]. Journal of fluid mechanics (revised), 2014.
[8] 张阿漫，王诗平，白兆宏等. 不同环境下气泡脉动特性实验研究[J].力学学报，2011, 43(1):71-83.
Zhang A.M., Wang S.P., Bai Z.H., et al. Experimental study on bubble pulse features under different circumstances[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(1): 71-83P.
[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): 112-117P.
Chu W.H., Zhang A.M., Wang S.P.. Experimental study on bubble pulse features under combined action of wall and free surface[J]. Journal of Vibration and Shock, 2013, 32(13): 112-117P.
[10] Naude C F, Ellis A T. On the mechanism of cavitation damage by nonhemispherical cavities collapsing in contact with a solid boundary[J]. California Institute of technology. Ph.D. 1960.
[11] Higdon C E. Water barrier ship self-defense concept, ADA294929[J]. USA: Naval Surface Warfare Center, Dahlgren Divison, 1994:142-155P.
[12] Naval Sea Systems Command, Water Barrier Ship Self-Defense[M], Nswc. Navy.