THE COUNTER-JET FORMATION IN AN AIR BUBBLE INDUCED BY THE IMPACT OF SHOCK WAVES

被引：9
作者：
Bai Li-xin [2 ]
Xu Wei-lin [1 ]
Li Chao [2 ]
Gao Yan-dong [3 ]
机构：
[1] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
[2] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China
[3] Liaoning Tech Univ, Sch Elect & Informat Engn, Huludao 125105, Peoples R China
来源：
JOURNAL OF HYDRODYNAMICS | 2011年 / 23卷 / 05期
基金：
中国国家自然科学基金;
关键词：
cavitation bubble; shock wave; counter-jet; high-speed photography; CAVITATION BUBBLE; RIGID BOUNDARY; COLLAPSE; DYNAMICS; EMISSION; CAVITIES; BEHAVIOR; SURFACE;
D O I：
10.1016/S1001-6058(10)60150-3
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The interaction of an air bubble (isolated in water or attached to a boundary) with shock waves induced by electric sparks is investigated by high-speed photography. The interaction is closely related to the counter-jet induced by the impact of shock waves. The formation of a counter-jet in an air bubble is related to the liquid jet formed in the same air bubble, but the mechanism is different with that of the counter-jet formation in a collapsing cavitation bubble. The formation of a counter-jet in an air bubble is related to discharge energy, air bubble size and radius of shock wave. With a given energy of the spark discharge, the formation of a counter-jet in an air bubble is related to delta / epsilon (the ratio of the dimensionless bubble-bubble distance to the dimensionless air bubble radius). The counter-jet will only be produced when delta / epsilon is in the range of 1.2-2.2. The counter-jet in an air bubble is of an important nuclei-generating mechanism.
引用
收藏
页码：562 / 569
页数：8
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