Numerical simulation of single bubble dynamics under acoustic travelling waves

被引:55
作者
Ma, Xiaojian [1 ]
Huang, Biao [1 ]
Li, Yikai [1 ]
Chang, Qing [1 ]
Qiu, Sicong [1 ]
Su, Zheng [2 ]
Fu, Xiaoying [3 ]
Wang, Guoyu [1 ]
机构
[1] Beijing Inst Technol, Sch Mech & Vehicular Engn, Beijing 100081, Peoples R China
[2] Capital Med Univ, Dept Endodont, Sch Stomatol, Beijing 100050, Peoples R China
[3] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China
基金
中国国家自然科学基金; 对外科技合作项目(国际科技项目);
关键词
Bubble dynamics; Acoustic travelling wave; Radiation force; CLSVOF; ULTRASONIC-FIELD; SURFACE-TENSION; STANDING-WAVE; LEVEL-SET; CAVITATION; FLUID; FLOW; LIQUID; VOLUME; AGENT;
D O I
10.1016/j.ultsonch.2017.12.021
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The objective of this paper is to apply CLSVOF method to investigate the single bubble dynamics in acoustic travelling waves. The Naiver-Stokes equation considering the acoustic radiation force is proposed and validated to capture the bubble behaviors. And the CLSVOF method, which can capture the continuous geometric properties and satisfies mass conservation, is applied in present work. Firstly, the regime map, depending on the dimensionless acoustic pressure amplitude and acoustic wave number, is constructed to present different bubble behaviors. Then, the time evolution of the bubble oscillation is investigated and analyzed. Finally, the effect of the direction and the damping coefficient of acoustic wave propagation on the bubble behavior are also considered. The numerical results show that the bubble presents distinct oscillation types in acoustic travelling waves, namely, volume oscillation, shape oscillation, and splitting oscillation. For the splitting oscillation, the formation of jet, splitting of bubble, and the rebound of sub-bubbles may lead to substantial increase in pressure fluctuations on the boundary. For the shape oscillation, the nodes and antinodes of the acoustic pressure wave contribute to the formation of the "cross shape" of the bubble. It should be noted that the direction of the bubble translation and bubble jet are always towards the direction of wave propagation. In addition, the damping coefficient causes bubble in shape oscillation to be of asymmetry in shape and inequality in size, and delays the splitting process.
引用
收藏
页码:619 / 630
页数:12
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