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Simulation of Rayleigh Bubble Growth near a No-Slip Rigid Wall

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Abstract:

In order to study the role of growing cavitation bubbles in the context of ultrasonic cleaning, we perform two-dimensional, axisymmetric Navier-Stokes simulation for compressible, multicomponent flow and examine the so-called Rayleigh growth of an air bubble (with initial radius 33 µm and pressure 10 MPa) near a rigid wall. The simulation suggests that strong shear stress, which is important in physical cleaning such as particle removal, appears as a result of the bubble-growth-induced shock passage. The parametric study with varying a standoff distance of the bubble to the wall shows that the wall shear stress linearly decreases against the standoff distance.

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Periodical:

Solid State Phenomena (Volume 314)

Pages:

192-196

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.314.192

Citation:

Cite this paper

Online since:

February 2021

Authors:

Tomoya Tanaka*, Keita Ando

Keywords:

Bubble Growth, Cavitation Inception, Ultrasonic Cavitation Cleaning, Wall Shear Stress

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Creative Commons CC BY 4.0

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* - Corresponding Author

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