Collapse Dynamics of Hemispherical Cavitation Bubble in Contact with a Solid Boundary

被引：3
|
作者：
Postnikov, A., V [1 ]
机构：
[1] Russian Acad Sci, Valiev Inst Phys & Technol, Yaroslavl Branch, Yaroslavl 150007, Russia
来源：
FLUID DYNAMICS | 2020年 / 55卷 / 04期
关键词：
cavitation bubble; hemispherical bubble; rigid boundary; collapse; rebound; shock waves; BEAM-DEFLECTION PROBE; AQUEOUS-SOLUTIONS; SHOCK-WAVES; NA2SO4; MGCL2; NACL; GENERATION; PRESSURES; VAPOR; MGSO4;
D O I：
10.1134/S0015462820040096
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The dynamics of electrochemically produced hemispherical bubble at solid-liquid interface is investigated experimentally. Time-resolved photography is applied to measure the position of bubble wall as a function of time. By means of stroboscope schlieren photography with 1 mu s exposure time it is shown that the development of instabilities of the bubble shape are general feature of the bubble dynamics in contact with the solid boundaries. The acoustic transients emitted after cavitation bubble collapse were registered with the laser beam deflection technique. Duration of the transient of 50-60 ns enables to estimate maximum pressure as 2.5 kbar, when the maximum bubble radius is 1 mm.
引用
收藏
页码：454 / 464
页数：11
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