title: Investigations on dynamics of interacting cavitation bubbles in strong acoustic fields.
abstract: Given its importance to the dynamics of cavitation bubbles, the mutual interaction between bubbles was carefully investigated in this work. The cavitation noises emitted in different sonication conditions were recorded to study the dynamical behavior of the bubbles. The frequency spectra of the noises suggest that the dispersing state of the bubbles severely influence the oscillations of bubbles, and that the nonlinear feature of the dynamics of cavitation bubbles, imposed by the mutual bubble-bubble interaction, gradually develops with the decrease of the dispersing height. Theoretical analysis shows that the size difference between the interacting bubbles should be responsible for the increase of nonlinearity of the oscillation, and that the decrease of the distance between them could effectively enhance the nonlinear feature of the oscillation of the bubble, both of which agree well with the experimental observation.
authors: State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
authors: Liang
authors: L
authors: Jiang
authors: State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China; Ocean College, Zhejiang University, Hangzhou 310058, China. Electronic address: gehan@zju.edu.cn.
authors: Han
authors: H
authors: Ge
authors: State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China; College of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China.
authors: Fengbin
authors: F
authors: Liu
authors: State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
authors: Darong
authors: D
authors: Chen
keywords: Cavitation bubbles; Keller-Miksis model; Non-linear dynamics; Ultrasonic cavitation