Modelling bubble collapse anisotropy in complex geometries
Modelling bubble collapse anisotropy in complex geometries
A gas or vapor bubble collapsing in the vicinity of a rigid boundary displaces towards the boundary and produces a high-speed jet directed at the boundary. This behavior has been shown to be a function of the 'anisotropy' of the collapse, measured by a dimensionless representation of the Kelvin impulse known as the anisotropy parameter [Supponen et al., J. Fluid Mech. 802, 263-293 (2016)]. However, characterisation of the anisotropy parameter in different geometries has been limited to simplified analytic solutions. In this work we develop an inexpensive numerical model, based on the Boundary Element Method, capable of predicting the anisotropy parameter for any rigid complex geometry. We experimentally explore a robust measure of bubble displacement, showing that the bubble displacement in a range of complex geometries behaves as a single function of the predicted anisotropy parameter values.
Andrews, Elijah
81c1497b-1d44-4359-b026-f2ef2259b8c3
Peters, Ivo R
222d846e-e620-4017-84cb-099b14ff2d75
14 December 2022
Andrews, Elijah
81c1497b-1d44-4359-b026-f2ef2259b8c3
Peters, Ivo R
222d846e-e620-4017-84cb-099b14ff2d75
Andrews, Elijah and Peters, Ivo R
(2022)
Modelling bubble collapse anisotropy in complex geometries.
Physical Review Fluids, 7.
(doi:10.48550/arXiv.2207.09970).
Abstract
A gas or vapor bubble collapsing in the vicinity of a rigid boundary displaces towards the boundary and produces a high-speed jet directed at the boundary. This behavior has been shown to be a function of the 'anisotropy' of the collapse, measured by a dimensionless representation of the Kelvin impulse known as the anisotropy parameter [Supponen et al., J. Fluid Mech. 802, 263-293 (2016)]. However, characterisation of the anisotropy parameter in different geometries has been limited to simplified analytic solutions. In this work we develop an inexpensive numerical model, based on the Boundary Element Method, capable of predicting the anisotropy parameter for any rigid complex geometry. We experimentally explore a robust measure of bubble displacement, showing that the bubble displacement in a range of complex geometries behaves as a single function of the predicted anisotropy parameter values.
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Andrews, Peters - 2022 - Modelling bubble collapse anisotropy in complex geometries
- Accepted Manuscript
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Accepted/In Press date: 14 November 2022
Published date: 14 December 2022
Identifiers
Local EPrints ID: 472840
URI: http://eprints.soton.ac.uk/id/eprint/472840
ISSN: 2469-990X
PURE UUID: e8996d51-6a19-4b8d-aae0-04161a8d7425
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Date deposited: 20 Dec 2022 17:33
Last modified: 17 Mar 2024 03:39
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Author:
Elijah Andrews
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