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Updated: Nov 7, 2025
08:19
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
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Nonlinear oscillation and acoustic scattering of bubbles
1College of Physics and Electronic Information Engineering, Engineering Research Center of Nanostructure and Functional Materials, Ning Xia Normal University, Gu Yuan 756000, China.
Ultrasonics Sonochemistry
|May 3, 2021
Summary
This study numerically simulates acoustic scattering from bubble clusters. Results show bubble interactions influence acoustic fields, with distinct scattering patterns and pressure variations within and outside the cluster.
Area of Science:
- Acoustics
- Fluid Dynamics
- Nonlinear Physics
Background:
- Understanding acoustic scattering from bubble clusters is crucial for various ultrasonic applications.
- Previous studies often simplified bubble interactions, necessitating a more detailed investigation.
Purpose of the Study:
- To numerically simulate and analyze the scattered acoustic pressure and cross section of bubble clusters.
- To investigate the influence of bubble interactions on acoustic scattering fields.
- To explore the dependency of scattering fields on various physical parameters.
Main Methods:
- Numerical simulation based on bubble dynamics and fluid dynamics.
- Modeling of nonlinear oscillations of bubbles within a spherical cluster.
- Analysis of scattered acoustic fields considering inter-bubble interactions.
Main Results:
- Bubble oscillation phases are delayed within the cluster, but radii show minor variations.
- Acoustic scattering exhibits clear directivity, with varying pressures inside and outside the cluster.
- Scattering fields are dependent on driving parameters, bubble properties, and cluster size.
Conclusions:
- Bubble interactions significantly affect acoustic scattering characteristics.
- Theoretical predictions enhance understanding of ultrasonic physics.
- Findings are valuable for optimizing ultrasonic applications involving bubble fields.
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