Modeling bubble collapse anisotropy in complex geometries

Andrews, Elijah D.; Peters, Ivo R.

doi:10.1103/physrevfluids.7.123601

Cited by 7 publications

(16 citation statements)

References 48 publications

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“…Although this jet is strong, it does not affect the overall motion of the bubble as the bubble proceeds to collapse in the expected vertical direction. This effect is visible in data sets we have used previously (Andrews & Peters 2022) and can be found in some other publications such as figure 5 in Požar, Agrež & Petkovšek (2021) and figure 4( a ) in Sieber et al. (2022).…”

Section: Resultssupporting

confidence: 72%

“…(2017) as well as data points from Andrews & Peters (2022) which used a different experimental method than the present research. Although there is significant spread in the data from Andrews & Peters (2022), it does not follow the same curve as the present research. The curve presented by Supponen et al.…”

Section: Anisotropy Parameter For Porous Platesmentioning

confidence: 93%

“…We have previously presented a numerical model, based on the boundary element method, capable of predicting the anisotropy parameter for arbitrary rigid geometries (Andrews & Peters 2022). This model assumes that the bubble is spherical and stationary.…”

Section: Methodsmentioning

confidence: 99%

“…We have previously presented the core boundary element method procedure (Andrews et al. 2020) and anisotropy computations (Andrews & Peters 2022) in detail.…”

Section: Methodsmentioning

confidence: 99%

“…Data are coloured by void fraction . The grey data points in ( c ) and ( d ) are from Andrews & Peters (2022). The black dashed line is a curve fit to the porous plates data.…”

Section: Anisotropy Parameter For Porous Platesmentioning

confidence: 99%

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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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Section: Resultssupporting

confidence: 72%

Section: Anisotropy Parameter For Porous Platesmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

“…We have previously presented the core boundary element method procedure (Andrews et al. 2020) and anisotropy computations (Andrews & Peters 2022) in detail.…”

Section: Methodsmentioning

confidence: 99%

“…Data are coloured by void fraction . The grey data points in ( c ) and ( d ) are from Andrews & Peters (2022). The black dashed line is a curve fit to the porous plates data.…”

Section: Anisotropy Parameter For Porous Platesmentioning

confidence: 99%

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