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Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()

A model for acoustic cavitation flows able to depict large geometries and time scales is proposed. It is based on the Euler–Lagrange approach incorporating a novel Helmholtz solver with a non-linear acoustic attenuation model. The method is able to depict a polydisperse bubble population, which may...

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Detalles Bibliográficos
Autores principales: Lesnik, Sergey, Aghelmaleki, Atiyeh, Mettin, Robert, Brenner, Gunther
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9483804/
https://www.ncbi.nlm.nih.gov/pubmed/36116243
http://dx.doi.org/10.1016/j.ultsonch.2022.106060
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author Lesnik, Sergey
Aghelmaleki, Atiyeh
Mettin, Robert
Brenner, Gunther
author_facet Lesnik, Sergey
Aghelmaleki, Atiyeh
Mettin, Robert
Brenner, Gunther
author_sort Lesnik, Sergey
collection PubMed
description A model for acoustic cavitation flows able to depict large geometries and time scales is proposed. It is based on the Euler–Lagrange approach incorporating a novel Helmholtz solver with a non-linear acoustic attenuation model. The method is able to depict a polydisperse bubble population, which may vary locally. The model is verified and analyzed in a setup with a large sonotrode. Influences of the initial void fraction and the population type are studied. The results show that the velocity is strongly influenced by these parameters. Furthermore, the largest bubbles determine the highest pressure amplitude reached in the domain, which corresponds to the Blake threshold of these bubbles. Additionally, a validation is performed with a small sonotrode. The model reproduces most of the experimentally observed phenomena. In the experiments, neighboring bubbles are found which move in different directions depending on their size. The numerical results show that the responsible mechanism here is the reversal of the primary Bjerknes force at a certain pressure amplitude.
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spelling pubmed-94838042022-09-20 Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale() Lesnik, Sergey Aghelmaleki, Atiyeh Mettin, Robert Brenner, Gunther Ultrason Sonochem Short Communication A model for acoustic cavitation flows able to depict large geometries and time scales is proposed. It is based on the Euler–Lagrange approach incorporating a novel Helmholtz solver with a non-linear acoustic attenuation model. The method is able to depict a polydisperse bubble population, which may vary locally. The model is verified and analyzed in a setup with a large sonotrode. Influences of the initial void fraction and the population type are studied. The results show that the velocity is strongly influenced by these parameters. Furthermore, the largest bubbles determine the highest pressure amplitude reached in the domain, which corresponds to the Blake threshold of these bubbles. Additionally, a validation is performed with a small sonotrode. The model reproduces most of the experimentally observed phenomena. In the experiments, neighboring bubbles are found which move in different directions depending on their size. The numerical results show that the responsible mechanism here is the reversal of the primary Bjerknes force at a certain pressure amplitude. Elsevier 2022-06-09 /pmc/articles/PMC9483804/ /pubmed/36116243 http://dx.doi.org/10.1016/j.ultsonch.2022.106060 Text en © 2022 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Short Communication
Lesnik, Sergey
Aghelmaleki, Atiyeh
Mettin, Robert
Brenner, Gunther
Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
title Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
title_full Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
title_fullStr Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
title_full_unstemmed Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
title_short Modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
title_sort modeling acoustic cavitation with inhomogeneous polydisperse bubble population on a large scale()
topic Short Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9483804/
https://www.ncbi.nlm.nih.gov/pubmed/36116243
http://dx.doi.org/10.1016/j.ultsonch.2022.106060
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