The Effect of Surface Geometry of Solid Wall on the Collapse of a Cavitation Bubble

Sun, Yurong; Yuxin, Du; Yao, Zhifeng; Zhong, Qiang; Geng, Siyuan; Wang, Fujun

doi:10.1115/1.4053350

Cited by 27 publications

(6 citation statements)

References 17 publications

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“…Recently, Gonzales-Avila et al [33] released that the air trapped inside cavities could repel the bubbles away from the boundary surface, therefore preventing cavitation damage. Similarly, Sun et al [34] also found that the solid surface with several cavities containing gas enabled the direction of motion of the jet produced by the bubble collapsing to flow away from the wall. Subsequently, their newest work [35] found that the solid wall with a gas entrapping hole also changed the migration direction of the cavitation bubble.…”

Section: Introductionmentioning

confidence: 85%

Numerical investigation of the cavitation bubble near the solid wall with a gas-entrapping hole based on a fully compressible three-phase model

Yin

Zhang

et al. 2023

Ultrasonics Sonochemistry

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Section: Introductionmentioning

confidence: 85%

Numerical investigation of the cavitation bubble near the solid wall with a gas-entrapping hole based on a fully compressible three-phase model

Yin

Zhang

et al. 2023

Ultrasonics Sonochemistry

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“…(2020) and Sun et al. (2022 a ), who considered surfaces with a pattern of gas-entrapping holes. In all these cases, bubbles were found to translate away from the boundary, acting analogously to a typical free surface.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, Sun et al (2022b) investigated bubble collapse near a rigid surface with a gas-entrapping hole. This concept was also investigated by Gonzalez-Avila et al (2020) and Sun et al (2022a), who considered surfaces with a pattern of gas-entrapping holes. In all these cases, bubbles were found to translate away from the boundary, acting analogously to a typical free surface.…”

Section: Introductionmentioning

confidence: 99%

Bubble collapse near porous plates

2023

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The collapse of a gas or vapour bubble near a non-porous boundary is directed at the boundary due to the asymmetry induced by the nearby boundary. High surface pressure and shear stress from this collapse can damage, or clean, the surface. A porous boundary, such as a filter, would act similarly to a non-porous boundary but with reduced asymmetry and thus reduced effect. Prior research has measured the cleaning effect of bubbles on filters using ultrasonic cleaning, but it is not known how the bubble dynamics are fundamentally affected by the porosity of the surface. We address this question experimentally by investigating how the standoff distance, porosity, pore size and pore shape affect two collapse properties: bubble displacement and bubble rebound size. We show that these properties depend primarily on the standoff distance and porosity of the boundary and extend a previously developed numerical model that approximates this behaviour. Using the numerical model in combination with experimental data, we show that bubble displacement and bubble rebound size each collapse onto respective single curves.

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“…Lots of scholars [10][11][12][13][14][15] then studied influences of the dimensionless parameter  on bubble dynamics, including the bubble collapse time, the micro-jet and contra-jet phenomena, and features of the pressure and velocity distribution with different  .…”

Section: Introductionmentioning

confidence: 99%

Investigations of the dynamical behaviors of a millimeter-scale cavitation bubble near the rigid wall

Zi,

He,

Yao

et al. 2023

Preprint

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The collapse of the cavitation bubble near the rigid wall emits shock waves and creates micro-jet, causing cavitation damage and operation instability of the hydraulic machinery. In this paper, the millimeter-scale bubble near the rigid wall was investigated experimentally and numerically with the help of a laser photogrammetry system with nanosecond-micron space-time resolution and the open source package OpenFOAM-2212. The morphological characteristics of the bubble during its growth phase, collapse phase and rebound phase were observed by experiment and numerical simulation, and characteristics of the accompanying phenomena including the shock wave propagation and micro-jet evolution were well elucidated. The numerical results agree well with the experimental data. The bubble starts from a tiny small size with high internal pressure and expands into a sphere with a radius of 1.07mm for γ=d/Rmax=1.78. The bubble collapses into a heart shape and moves towards to the rigid wall during its collapse phase, resulting in a higher pressure load for the rigid wall in the second collapse. The maximum pressure of the shock wave of the first bubble collapse phase reaches 5.4MPa, and the velocity of the micro-jet reaches approximately 100m/s. This study enriches the existing experimental and numerical results of the dynamics of the near-wall cavitation bubble.

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The Effect of Surface Geometry of Solid Wall on the Collapse of a Cavitation Bubble

Cited by 27 publications

References 17 publications

Numerical investigation of the cavitation bubble near the solid wall with a gas-entrapping hole based on a fully compressible three-phase model

Numerical investigation of the cavitation bubble near the solid wall with a gas-entrapping hole based on a fully compressible three-phase model

Bubble collapse near porous plates

Investigations of the dynamical behaviors of a millimeter-scale cavitation bubble near the rigid wall

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