On the interaction between a pulsating bubble and a particle on the rigid wall

被引:0
作者
Huang, Xiao [1 ,2 ]
Ren, Chun-Zhu [1 ]
Liu, Peng-Bo [1 ]
Hu, Hai-Bao [1 ]
机构
[1] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ Shenzhen, Res & Dev Inst, Shenzhen 518057, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
CAVITATION BUBBLES; FINAL STAGE; JET IMPACT; GAS BUBBLE; COLLAPSE; PRESSURE; BEHAVIOR;
D O I
10.1063/5.0230263
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Sand-laden cavitation poses significant challenges in high dam hydrodynamics and hydraulic machinery. This study examines the interaction between a pulsating bubble and a rigid spherical particle attached to a wall, aiming to reveal its mechanical mechanisms. Particle motion is strongly influenced by two dimensionless distances: the bubble-wall distance gamma and the horizontal bubble-particle distance l, both scaled by the maximum bubble radius. Parameter gamma determines the bubble's evolution characteristics and affects the particle's motion. Smaller gamma means the particle is mainly influenced by bubble pulsation, while larger gamma makes the particle more affected by wall vortices. The effect of l is primarily seen in the particle's velocity magnitude. A larger l causes the particle to move toward the bubble, while a smaller l makes it move away, due to the relative strengths of bubble expansion and contraction. We also identify parameter sets that result in 0 particle velocity and observe unique particle motions during bubble splitting and the formation of oblique jets. This study may further promote the application of underwater cavitation cleaning.
引用
收藏
页数:13
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