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Updated: Jun 16, 2025
08:19
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
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1/2 order subharmonic waves of two cavitation bubbles.
Feng Tao1, Guo-Ying Zhao2, Wei-Zhong Chen3
1School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan 243002, China.
Ultrasonics Sonochemistry
|August 20, 2024
Summary
The interaction between two cavitation bubbles influences subharmonic wave generation. Increased interaction, from higher driving amplitude or closer proximity, can enhance or suppress this phenomenon.
Area of Science:
- Acoustics
- Fluid Dynamics
- Nonlinear Dynamics
Background:
- Cavitation bubbles exhibit complex dynamics when interacting.
- Subharmonic generation is a key phenomenon in bubble acoustics.
Purpose of the Study:
- To numerically investigate the 1/2 order subharmonic wave in two coupling cavitation bubbles.
- To analyze the effect of bubble interaction on subharmonic generation.
Main Methods:
- Numerical simulation of coupled cavitation bubble dynamics.
- Fourier spectrum analysis to identify subharmonic waves.
Main Results:
- Mutual interaction significantly affects the appearance and intensity of the 1/2 order subharmonic.
- Higher driving amplitude and smaller bubble distance intensify interaction, leading to greater promotion or suppression.
- Bubble energy and internal temperature fluctuate during collapse when subharmonics occur.
Conclusions:
- Multi-bubble dynamics are complex, with interaction playing a crucial role.
- Understanding subharmonic generation is vital for practical applications of cavitation bubbles.
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