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Updated: Jun 14, 2025

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Theoretical study on the movements of bubbles.

Lingling Zhang1, Weizhong Chen2

  • 1School of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215506, China.

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|September 3, 2024
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Summary

Interacting spherical bubbles exhibit complex motions, including straight lines and circular paths, driven by attractive, repulsive, and equilibrium forces. These findings explain phenomena like cavitation chains and bubble field profiles.

Keywords:
Bubble dynamicsBubble movementInteraction

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Area of Science:

  • Fluid Dynamics
  • Classical Mechanics
  • Acoustics

Background:

  • Understanding bubble dynamics is crucial for various fields, including acoustics and fluid mechanics.
  • Interactions between multiple bubbles can lead to complex behaviors not observed in single bubbles.

Purpose of the Study:

  • To investigate the radial and translational motions of multiple interacting spherical bubbles.
  • To characterize the types of motion and interactions governing these bubbles.

Main Methods:

  • Employed classical Newton mechanics to model bubble interactions.
  • Analyzed bubble tracks to identify patterns in motion and inter-bubble forces.

Main Results:

  • Observed both straight-line and circular motions for interacting bubbles.
  • Identified three types of straight-line motion (attraction, attraction-repulsion, equilibrium) and two types of circular motion (attraction, equilibrium).
  • Characterized bubble interactions as attractive, repulsive, or dynamic equilibrium.

Conclusions:

  • The study provides a mechanical explanation for observed bubble behaviors.
  • Results offer insights into the formation of cavitation chains and the spatial distribution of bubbles in cavitation fields.