A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎

A theoretical model to predict the dynamics of a shelled micro-bubble driven by acoustic field in a tubular geometric confinement is proposed in the present study. The model is derived from first principle and may not be considered as a variant of Rayleigh-Plesset solution. A semi-analytical model i...

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Autor principal:	A. Qamar
Formato:	article
Lenguaje:	EN
Publicado:	Isfahan University of Technology 2021
Materias:	shelled micro-bubbles; acoustics; geometric confinement; bubble dynamics; bubble resonant frequency; ultrasound contrast agents. Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/b782ff3093d046bd92ff7db94fed01c5
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spelling	oai:doaj.org-article:b782ff3093d046bd92ff7db94fed01c52021-11-13T07:03:04ZA Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎1735-3572https://doaj.org/article/b782ff3093d046bd92ff7db94fed01c52021-01-01T00:00:00Zhttp://jafmonline.net/JournalArchive/download?file_ID=56999&issue_ID=1015https://doaj.org/toc/1735-3572A theoretical model to predict the dynamics of a shelled micro-bubble driven by acoustic field in a tubular geometric confinement is proposed in the present study. The model is derived from first principle and may not be considered as a variant of Rayleigh-Plesset solution. A semi-analytical model is derived in the form of an ordinary differential equation connecting all parameters involved. Results obtained are in agreement with the available experimental data. The model is further linearized to obtain expression for the forced resonant frequency, which is shown to depend on geometric parameter of confinement as D/ where D and L are the tube diameter and length, respectively. Further, linear viscous damping coefficient is also studied and is found that an overdamped or an underdamped state exist base on shelled micro-bubble size and parameters of geometric confinement (L and D). The state of damping clearly indicate when the shelled micro-bubble in confinement would respond linearly or non-linearly under the influence of acoustic field‎.A. QamarIsfahan University of Technology articleshelled micro-bubbles; acoustics; geometric confinement; bubble dynamics; bubble resonant frequency; ultrasound contrast agents.Mechanical engineering and machineryTJ1-1570ENJournal of Applied Fluid Mechanics, Vol 14, Iss 6, Pp 1731-1740 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	shelled micro-bubbles; acoustics; geometric confinement; bubble dynamics; bubble resonant frequency; ultrasound contrast agents. Mechanical engineering and machinery TJ1-1570
spellingShingle	shelled micro-bubbles; acoustics; geometric confinement; bubble dynamics; bubble resonant frequency; ultrasound contrast agents. Mechanical engineering and machinery TJ1-1570 A. Qamar A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎
description	A theoretical model to predict the dynamics of a shelled micro-bubble driven by acoustic field in a tubular geometric confinement is proposed in the present study. The model is derived from first principle and may not be considered as a variant of Rayleigh-Plesset solution. A semi-analytical model is derived in the form of an ordinary differential equation connecting all parameters involved. Results obtained are in agreement with the available experimental data. The model is further linearized to obtain expression for the forced resonant frequency, which is shown to depend on geometric parameter of confinement as D/ where D and L are the tube diameter and length, respectively. Further, linear viscous damping coefficient is also studied and is found that an overdamped or an underdamped state exist base on shelled micro-bubble size and parameters of geometric confinement (L and D). The state of damping clearly indicate when the shelled micro-bubble in confinement would respond linearly or non-linearly under the influence of acoustic field‎.
format	article
author	A. Qamar
author_facet	A. Qamar
author_sort	A. Qamar
title	A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎
title_short	A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎
title_full	A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎
title_fullStr	A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎
title_full_unstemmed	A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎
title_sort	model for shelled micro-bubble in geometric confinement under acoustics field‎
publisher	Isfahan University of Technology
publishDate	2021
url	https://doaj.org/article/b782ff3093d046bd92ff7db94fed01c5
work_keys_str_mv	AT aqamar amodelforshelledmicrobubbleingeometricconfinementunderacousticsfield AT aqamar modelforshelledmicrobubbleingeometricconfinementunderacousticsfield
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A Model for Shelled Micro-Bubble in Geometric Confinement under Acoustics Field‎

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