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Updated: Aug 8, 2025
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Published on: May 9, 2021
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Dynamics of a bubble in oscillating viscous liquid
T P Lyubimova1, A A Fomicheva1, A O Ivantsov1
1Computational Fluid Dynamics Laboratory, Institute of Continuous Media Mechanics UB RAS, 1 Koroleva Street, Perm 614068, Russia.
Summary
Gaseous bubble dynamics in viscous liquids show attraction to walls at low viscosity. Increasing viscosity causes repulsion, with repulsion force growing as Reynolds number decreases.
Area of Science:
- Fluid dynamics
- Nonlinear dynamics
- Pattern formation
Background:
- Gaseous bubble behavior in viscous fluids is crucial for understanding various physical phenomena.
- Previous studies indicate bubble attraction to walls in low-viscosity scenarios.
Purpose of the Study:
- To investigate gaseous bubble dynamics in oscillating viscous liquids.
- To analyze the effects of inclusion and host liquid viscosities on bubble-wall interactions.
Main Methods:
- Numerical simulations using the level-set method.
- Non-stationary approach to model bubble movement.
- Balance method to determine repulsion force dependencies.
Main Results:
- In low-viscosity fluids (without gravity), bubbles are attracted to the nearest wall.
- Increasing liquid viscosity weakens attraction and leads to repulsion.
- Repulsion force increases with decreasing Reynolds number (higher viscosity).
Conclusions:
- Viscosity plays a critical role in determining bubble-wall interaction, shifting from attraction to repulsion.
- The findings provide insights into nonlinear dynamics and pattern formation in extended systems.
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