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Related Experiment Video

Updated: Jun 6, 2026

Induction of Cerebral Arterial Gas Embolism in Rat

Induction of Cerebral Arterial Gas Embolism in Rat

Published on: October 18, 2024

Gas bubbles in simulation and experiment.

Peter Lakshmanan¹, Franz Peters, Nicolas Fries

¹Technische Universität Dortmund, Biochemical and Chemical Engineering, Fluid Mechanics, Germany.

Journal of Colloid and Interface Science

|November 19, 2010

Summary

A novel rotating chamber stabilizes single bubbles for extended observation. Experimental results for air bubbles in silicone oil perfectly match numerical simulations, validating the setup.

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Area of Science:

Fluid Dynamics
Multiphase Flow

Background:

Studying single bubble dynamics is crucial for understanding multiphase flow phenomena.
Existing methods often limit observation time, hindering detailed analysis.
Stabilizing bubbles in a controlled environment is key for accurate experimental data.

Purpose of the Study:

To present an experimental setup enabling long-term observation of single bubbles.
To validate the experimental setup using air bubbles in silicone oil.
To compare experimental findings with numerical simulations and literature correlations.

Main Methods:

Utilizing a rotating chamber to balance buoyancy, drag, and lift forces for bubble stabilization.
Employing a modified, mass-conserving level-set method for free interface representation.
Using an immersed-boundary formulation for solving conservation equations.

Main Results:

Achieved perfect agreement between experimental results and numerical simulations.
Validated findings against available correlations from scientific literature.
Demonstrated negligible influence of liquid shear due to rotation.
Observed no significant Marangoni stresses in the air-silicone oil system.

Conclusions:

The developed experimental setup allows for extended observation of single bubbles.
The air-silicone oil system is suitable for validating multiphase flow models.
The study confirms the accuracy of the employed numerical methods for bubble dynamics.