Simplified models of acoustic Faraday cage.
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| Title: | Simplified models of acoustic Faraday cage. |
|---|---|
| Authors: | Skvortsov, Alexei T.1 (AUTHOR) alexei.skvortsov@defence.gov.au, Moore, Stephen1 (AUTHOR) stephen.moore15@defence.gov.au, MacGillivray, Ian R.1 (AUTHOR) ian.macgillivray@defence.gov.au, Kocan, Martin1 (AUTHOR) martin.kocan@defence.gov.au |
| Source: | Journal of the Acoustical Society of America. Jan2026, Vol. 159 Issue 1, p60-73. 14p. |
| Subjects: | Acoustic reflection, Soundproofing, Boundary value problems, Scattering (Mathematics), Noise control |
| Abstract: | A theoretical framework for modelling the acoustic isolation performance of a bubbly curtain consisting of a circular array of bubbly plumes is proposed. The plumes are considered as cylindrical columns with effective acoustic properties deduced from the conventional formulas for a bubbly medium. The rationale for this design is the ability to engage the collective modes of the plumes leading to favorable low frequency performance, defined by a low insertion ratio. Two analytical models have been evaluated. First, the multiple scattering model expressing the results in terms of the scattering amplitude of individual plumes known from the previous studies and, second, the model of an effective boundary condition imposed on the centreline of the array. It is found that the former model performs better over a broad range of parameters. It is shown that the main parameter controlling the system performance is the reflection coefficient of the array, which can be deduced analytically and used to maximize the suppression of a given frequency of an acoustic noise source. As a demonstration of the predictive capability of the framework, the optimal system parameters are derived and then validated with the results of finite element modelling, showing good agreement. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Simplified models of acoustic Faraday cage. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Skvortsov%2C+Alexei+T%2E%22">Skvortsov, Alexei T.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alexei.skvortsov@defence.gov.au</i><br /><searchLink fieldCode="AR" term="%22Moore%2C+Stephen%22">Moore, Stephen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> stephen.moore15@defence.gov.au</i><br /><searchLink fieldCode="AR" term="%22MacGillivray%2C+Ian+R%2E%22">MacGillivray, Ian R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ian.macgillivray@defence.gov.au</i><br /><searchLink fieldCode="AR" term="%22Kocan%2C+Martin%22">Kocan, Martin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> martin.kocan@defence.gov.au</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Acoustical+Society+of+America%22">Journal of the Acoustical Society of America</searchLink>. Jan2026, Vol. 159 Issue 1, p60-73. 14p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Acoustic+reflection%22">Acoustic reflection</searchLink><br /><searchLink fieldCode="DE" term="%22Soundproofing%22">Soundproofing</searchLink><br /><searchLink fieldCode="DE" term="%22Boundary+value+problems%22">Boundary value problems</searchLink><br /><searchLink fieldCode="DE" term="%22Scattering+%28Mathematics%29%22">Scattering (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Noise+control%22">Noise control</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A theoretical framework for modelling the acoustic isolation performance of a bubbly curtain consisting of a circular array of bubbly plumes is proposed. The plumes are considered as cylindrical columns with effective acoustic properties deduced from the conventional formulas for a bubbly medium. The rationale for this design is the ability to engage the collective modes of the plumes leading to favorable low frequency performance, defined by a low insertion ratio. Two analytical models have been evaluated. First, the multiple scattering model expressing the results in terms of the scattering amplitude of individual plumes known from the previous studies and, second, the model of an effective boundary condition imposed on the centreline of the array. It is found that the former model performs better over a broad range of parameters. It is shown that the main parameter controlling the system performance is the reflection coefficient of the array, which can be deduced analytically and used to maximize the suppression of a given frequency of an acoustic noise source. As a demonstration of the predictive capability of the framework, the optimal system parameters are derived and then validated with the results of finite element modelling, showing good agreement. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1121/10.0042081 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 60 Subjects: – SubjectFull: Acoustic reflection Type: general – SubjectFull: Soundproofing Type: general – SubjectFull: Boundary value problems Type: general – SubjectFull: Scattering (Mathematics) Type: general – SubjectFull: Noise control Type: general Titles: – TitleFull: Simplified models of acoustic Faraday cage. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Skvortsov, Alexei T. – PersonEntity: Name: NameFull: Moore, Stephen – PersonEntity: Name: NameFull: MacGillivray, Ian R. – PersonEntity: Name: NameFull: Kocan, Martin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00014966 Numbering: – Type: volume Value: 159 – Type: issue Value: 1 Titles: – TitleFull: Journal of the Acoustical Society of America Type: main |
| ResultId | 1 |
