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Related Experiment Video

Updated: Feb 11, 2026

Studying Cavitation Enhanced Therapy

Studying Cavitation Enhanced Therapy

Published on: April 9, 2021

A physics based multiscale modeling of cavitating flows.

Jingsen Ma¹, Chao-Tsung Hsiao¹, Georges L Chahine¹

¹Dynaflow Inc., 10621-J Iron Bridge Road, Jessup, MD 20794, USA.

Computers & Fluids

|May 4, 2018

Summary

This summary is machine-generated.

This study introduces a multiscale model for cavitating bubbly flows, integrating discrete singularities for microbubbles and Navier-Stokes solvers for larger cavities. This approach accurately simulates diverse cavitation phenomena across various scales.

Keywords:

Cavitation Discrete singularity model Level set Multiscale Transition

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Area of Science:

Fluid Dynamics
Multiphase Flow Physics

Background:

Modeling cavitating bubbly flows presents challenges due to vast differences in characteristic length scales.
Existing models struggle to capture the full spectrum of phenomena from microbubbles to large cavities.

Purpose of the Study:

To develop and demonstrate a novel multiscale approach for simulating cavitating bubbly flows.
To bridge the gap between microscale bubble dynamics and macroscale cavity formation.

Main Methods:

Integration of a Discrete Singularities Model (DSM) for dispersed microbubbles.
Utilization of a two-phase Navier-Stokes solver with a level set approach for large cavities.
Implementation of inter-scale schemes to connect subgrid DSM bubbles with discretized cavities.

Main Results:

Successfully simulated cavitation inception and vapor core formation in vortex flows.
Modeled sheet-to-cloud cavitation over hydrofoils and cavitation behind blunt bodies.
Demonstrated accurate simulation of cavitation on propellers.

Conclusions:

The developed multiscale model effectively simulates various forms of cavitation.
This approach enhances the understanding and prediction of complex bubbly flow phenomena.
The model offers a robust tool for analyzing cavitation across different engineering scales.