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Updated: Aug 15, 2026
05:57
Blood Flow Imaging with Ultrafast Doppler
Published on: October 14, 2020
Fluid dynamics phenomena induced by power ultrasounds
1EDF-Les Renardieres, Div R&D, ADEI, Moret-sur-Loing, France. jean-luc.laborde@edfgdf.fr
Ultrasonics
|June 1, 2000
Summary
This study models power ultrasound propagation in liquids to predict acoustic cavitation and fluid dynamics. Computational fluid dynamics accurately simulates bubble behavior and acoustic streaming, enhancing reactor process understanding.
Area of Science:
- Fluid Dynamics
- Acoustics
- Chemical Engineering
Background:
- Power ultrasound (20-800 kHz) induces acoustic cavitation and fluid dynamics in liquids.
- Understanding these phenomena is crucial for optimizing processes in cylindrical reactors.
Purpose of the Study:
- To develop a mathematical model predicting active bubble locations and cavitation intensity.
- To link acoustic pressure with cavitation fields and understand fluid dynamics phenomena.
Main Methods:
- Computational fluid dynamics (CFD) was used to solve fluid dynamics equations.
- CFD provided pressure, velocity, and temperature fields.
- Non-linearities and acoustic streaming were computed.
Main Results:
- A clear link between acoustic pressure and cavitation fields was established.
- The model predicted acoustic fountain shape and its influence on wave propagation.
- Simulated convective flow and acoustic streaming agreed with experimental data.
Conclusions:
- Mathematical modeling using CFD is a valuable approach for predicting acoustic cavitation and fluid dynamics.
- The model successfully simulates bubble behavior under power ultrasound.
- This work enhances the understanding of acoustic phenomena in reactors.
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