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Updated: May 28, 2025

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
The oscillations of non-spherical bubbles in liquid
Yaorong Wu1, Zhaokang Lei1, Rui Liu1
1Institute of Shaanxi Key Laboratory of Ultrasonics, Shaanxi Normal University, Shaanxi China 710119.
This study investigates non-spherical bubble interactions using high-speed imaging. Three-bubble systems show altered bubble dynamics and acoustic responses compared to two-bubble systems, influencing cavitation.
Area of Science:
- Fluid dynamics
- Acoustics
- Non-linear dynamics
Background:
- Bubble dynamics are crucial in various scientific and industrial applications.
- Understanding multi-bubble interactions is key to controlling cavitation phenomena.
- Non-spherical bubble behavior presents unique challenges in modeling and prediction.
Purpose of the Study:
- To investigate the interaction dynamics of non-spherical bubbles.
- To analyze the effects of bubble interactions on internal temperature and fluid velocity.
- To explore the acoustic response and interaction patterns in three-bubble systems.
Main Methods:
- High-speed camera observation of bubble interactions.
- Theoretical investigation of bubble temperature and fluid velocity.
- Development and validation of a three-bubble model.
Main Results:
- Three-bubble systems exhibit increased mean radius and wall velocity compared to two-bubble systems.
- Acoustic resonance peaks shift leftward and increase with sound pressure.
- Observed interaction patterns include steady oscillations and coalescence, with bubble ejection influenced by size.
Conclusions:
- Non-spherical shape deformation impacts internal temperature and flow fields, relevant to cavitation.
- The three-bubble model accurately predicts experimental observations.
- Findings aid in understanding bubble behavior in chained multi-bubble systems within inertial cavitation fields.
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