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Updated: Mar 15, 2026

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Particle-bubble interaction inside a Hele-Shaw cell.

Peng Zhang1, John M Mines1, Sungyon Lee2

  • 1Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia 24061, USA.

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|September 15, 2016
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Summary
This summary is machine-generated.

Air bubble-particle interactions were studied in a Hele-Shaw cell. Bubbles split at close distances and slide around particles at larger distances, a finding supported by a new theoretical model.

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Area of Science:

  • Fluid dynamics
  • Multiphase flow
  • Microfluidics

Background:

  • Hydrodynamic interactions between bubbles and particles are crucial for multiphase separation and reaction processes.
  • Understanding these interactions is key to optimizing industrial applications.

Purpose of the Study:

  • To investigate the fundamental mechanisms of air bubble-particle collisions.
  • To determine the critical conditions governing bubble splitting versus sliding behavior.
  • To develop a predictive model for bubble-particle interaction outcomes.

Main Methods:

  • Physical experiments were conducted using a single air bubble and a fixed solid particle within a Hele-Shaw cell.
  • The initial transverse distance between the bubble and particle centroids was systematically varied.
  • A theoretical model was developed based on Darcy's law to estimate bubble volume transfer rates.

Main Results:

  • Observed that air bubbles either split into two daughter bubbles or slide around the particle.
  • The outcome depends on the initial transverse distance: splitting occurs at small distances, sliding at large distances.
  • The developed theoretical model showed good agreement with experimental observations.

Conclusions:

  • The study elucidates the distinct behaviors of air bubbles interacting with solid particles.
  • A predictive framework was established for bubble splitting versus sliding phenomena.
  • Findings contribute to the understanding and design of multiphase flow systems.