中国物理B ›› 2024, Vol. 33 ›› Issue (2): 24301-024301.doi: 10.1088/1674-1056/ad0717

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Behaviors of cavitation bubbles driven by high-intensity ultrasound

Chen-Yang Huang(黄晨阳), Fan Li(李凡), Shi-Yi Feng(冯释毅), Cheng-Hui Wang(王成会), Shi Chen(陈时)§, Jing Hu(胡静), Xin-Rui He(何芯蕊), and Jia-Kai Song(宋家凯)   

  1. Shaanxi Key Laboratory of Ultrasonics, Shaanxi Normal University, Xi'an 710119, China
  • 收稿日期:2023-08-23 修回日期:2023-10-19 接受日期:2023-10-26 出版日期:2024-01-16 发布日期:2024-01-16
  • 通讯作者: Cheng-Hui Wang, Shi Chen E-mail:wangld001@snnu.edu.cn;chenshi@snnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974232 and 12374441) and the Fund from the Yulin Science and Technology Bureau, China (Grant No. CXY-2022-178).

Behaviors of cavitation bubbles driven by high-intensity ultrasound

Chen-Yang Huang(黄晨阳), Fan Li(李凡), Shi-Yi Feng(冯释毅), Cheng-Hui Wang(王成会), Shi Chen(陈时)§, Jing Hu(胡静), Xin-Rui He(何芯蕊), and Jia-Kai Song(宋家凯)   

  1. Shaanxi Key Laboratory of Ultrasonics, Shaanxi Normal University, Xi'an 710119, China
  • Received:2023-08-23 Revised:2023-10-19 Accepted:2023-10-26 Online:2024-01-16 Published:2024-01-16
  • Contact: Cheng-Hui Wang, Shi Chen E-mail:wangld001@snnu.edu.cn;chenshi@snnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974232 and 12374441) and the Fund from the Yulin Science and Technology Bureau, China (Grant No. CXY-2022-178).

摘要: In a multi-bubble system, the bubble behavior is modulated by the primary acoustic field and the secondary acoustic field. To explore the translational motion of bubbles in cavitation liquids containing high-concentration cavitation nuclei, evolutions of bubbles are recorded by a high-speed camera, and translational trajectories of several representative bubbles are traced. It is found that translational motion of bubbles is always accompanied by the fragmentation and coalescence of bubbles, and for bubbles smaller than 10 μ, the possibility of bubble coalescence is enhanced when the spacing of bubbles is less than 30 μ. The measured signals and their spectra show the presence of strong negative pressure, broadband noise, and various harmonics, which implies that multiple interactions of bubbles appear in the region of high-intensity cavitation. Due to the strong coupling effect, the interaction between bubbles is random. A simplified triple-bubble model is developed to explore the interaction patterns of bubbles affected by the surrounding bubbles. Patterns of bubble interaction, such as attraction, repulsion, stable spacing, and rebound of bubbles, can be predicted by the theoretical analysis, and the obtained results are in good agreement with experimental observations. Mass exchange between the liquid and bubbles as well as absorption in the cavitation nuclei also plays an important role in multi-bubble cavitation, which may account for the weakening of the radial oscillations of bubbles.

关键词: ultrasonic cavitation, multi-bubble system, translational motion of bubbles

Abstract: In a multi-bubble system, the bubble behavior is modulated by the primary acoustic field and the secondary acoustic field. To explore the translational motion of bubbles in cavitation liquids containing high-concentration cavitation nuclei, evolutions of bubbles are recorded by a high-speed camera, and translational trajectories of several representative bubbles are traced. It is found that translational motion of bubbles is always accompanied by the fragmentation and coalescence of bubbles, and for bubbles smaller than 10 μ, the possibility of bubble coalescence is enhanced when the spacing of bubbles is less than 30 μ. The measured signals and their spectra show the presence of strong negative pressure, broadband noise, and various harmonics, which implies that multiple interactions of bubbles appear in the region of high-intensity cavitation. Due to the strong coupling effect, the interaction between bubbles is random. A simplified triple-bubble model is developed to explore the interaction patterns of bubbles affected by the surrounding bubbles. Patterns of bubble interaction, such as attraction, repulsion, stable spacing, and rebound of bubbles, can be predicted by the theoretical analysis, and the obtained results are in good agreement with experimental observations. Mass exchange between the liquid and bubbles as well as absorption in the cavitation nuclei also plays an important role in multi-bubble cavitation, which may account for the weakening of the radial oscillations of bubbles.

Key words: ultrasonic cavitation, multi-bubble system, translational motion of bubbles

中图分类号:  (Ultrasonics, quantum acoustics, and physical effects of sound)

  • 43.35.+d
43.25.+y (Nonlinear acoustics) 47.55.dd (Bubble dynamics)