High-speed experimental photography of collapsing cavitation bubble between a spherical particle and a rigid wall

被引：27

作者：

Zhang, Yu-ning ^{[1
,2
,3
]}

Xie, Xiao-yang ^{[3
,4
]}

Zhang, Yu-ning ^{[1
,2
,3
]}

Zhang, Yong-xue ^{[1
,2
]}

机构：

[1] China Univ Petr, Coll Mech & Transportat Engn, Beijing 102249, Peoples R China

[2] China Univ Petr, Beijing Key Lab Proc Fluid Filtrat & Separat, Beijing 102249, Peoples R China

[3] North China Elect Power Univ, Sch Energy Power & Mech Engn, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China

[4] North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China

来源：

JOURNAL OF HYDRODYNAMICS | 2018年 / 30卷 / 06期

关键词：

Cavitation; particle; bubble dynamics; bubble collapse; VORTEX IDENTIFICATION; SILT EROSION; PUMP; PERFORMANCE; ENHANCEMENT; INCEPTION; LIQUIDS; TURBINE; FORCE;

D O I：

10.1007/s42241-018-0128-0

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The synergetic effects between cavitation bubbles and silt particles on the damages of materials are essential problems in fluid machineries. For studying the underlying microscopic mechanisms, in the present paper, the dynamic behaviors of a single cavitation bubble between a spherical particle and a rigid wall are experimentally investigated with a high-speed camera. The results indicate that the existence of the particle can affect the bubble shape during collapse and significantly accelerate the collapse velocity of the bubble. The influences of the particle size, the distance between the bubble and the particle and the distance between the bubble and the rigid wall on the phenomena are qualitatively and quantitatively analyzed. These parameters can prominently affect the collapse velocity of the bubble (especially its maximum value).

引用

页码：1012 / 1021

页数：10