物理
气泡
空化
机械
超声波传感器
质点位移
粒子(生态学)
声学
激发
推进
振幅
声化学
流离失所(心理学)
经典力学
光学
热力学
海洋学
量子力学
地质学
心理学
心理治疗师
作者
Jie Wang,Shuai Li,Jingyu Gu,A-Man Zhang
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2023-04-01
卷期号:35 (4)
被引量:6
摘要
Particle propulsion by an attached acoustic cavitation bubble under strong ultrasonic wave excitation occupies the core of many applications, including ultrasonic cleaning, ultrasonography, targeted therapy, and microbubble motors. However, the driving capacity and mode of bubbles in the field of ultrasonics are far from being well understood, which severely limits its applicability in a variety of fields. In this study, a fluid–structure interaction model based on the boundary integral method is proposed to simulate complex interactions between a suspended spherical particle and an attached cavitation bubble. A one-to-one comparison between the numerical results and experimental data demonstrates the distinct advantage of our model over conventional approaches. Thereafter, we systematically investigate the dependence of bubble–particle interactions on the governing parameters, including the amplitude and phase of the ultrasonic wave, particle density, and particle-to-bubble size ratio. We also document different types of bubble dynamic behaviors under various governing parameters. Finally, we obtain scaling laws for the maximum displacement of the particle with respect to the governing parameters.
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