Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments

24 páginas, 17 figuras, 1 tabla

Detalles Bibliográficos
Autores: Bravo, Teresa, Maury, Cédric
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/337104
Acceso en línea:http://hdl.handle.net/10261/337104
Access Level:acceso abierto
Palabra clave:Acoustic black holesDuct acoustics
Sound attenuation
Visco-thermal dissipation
Causal-based optimization
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spelling Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experimentsBravo, TeresaMaury, CédricAcoustic black holesDuct acousticsSound attenuationVisco-thermal dissipationCausal-based optimization24 páginas, 17 figuras, 1 tablaWideband reduction of both sound reflection and transmission using compact non-intrusive liners remains a challenging issue for duct noise control applications. This work focuses on the acoustical performance limitations of cylindrical silencers made up of annular ring resonators with axial gradient of their cavity depths. It is shown from theoretical, numerical and experimental studies that a sub-wavelength silencer with optimized acoustic black hole (ABH) properties can be designed through which incident sound waves are retarded and fully dissipated within the activated resonant cavities. Such ABH-type silencer requires a suitable interplay between the wall impedance axial variations and the visco-thermal losses within the cavities. Key parameters that influence this balance are the axial growth of cavity depths and the wall porosity. A causal-based criterion has been proposed that maximizes the total integrated dissipated power, thereby leading to the optimal value of the wall porosity and to the ultimate bandwidth-to-length ratio that can be achieved by an ABH-type silencer given a target dissipation value. A space-frequency region has been numerically and experimentally identified over which the ABH effect is prominent. The causal-based criterion has been extended to account for the low-frequency ultimate performance of ABH silencers with coiled cavities and for the effects of a low-speed grazing flow.This work is part of the project TED2021-130103B-I00, funded by MCIN/AEI/10.13039/501100011033 and the European Union “NextGenerationEU”/PRTR. It has also received support from the French government under the France 2030 investment plan, as part of the Initiative d’Excellence d’Aix-Marseille Universit´e - A*MIDEX (AMX-19-IET-010)Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)European CommissionAix-Marseille UniversitéConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/337104reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//TED2021-130103B-I00http://dx.doi.org/10.1016/j.jsv.2023.117825Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3371042026-05-22T06:33:51Z
dc.title.none.fl_str_mv Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
title Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
spellingShingle Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
Bravo, Teresa
Acoustic black holesDuct acoustics
Sound attenuation
Visco-thermal dissipation
Causal-based optimization
title_short Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
title_full Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
title_fullStr Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
title_full_unstemmed Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
title_sort Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
dc.creator.none.fl_str_mv Bravo, Teresa
Maury, Cédric
author Bravo, Teresa
author_facet Bravo, Teresa
Maury, Cédric
author_role author
author2 Maury, Cédric
author2_role author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
European Commission
Aix-Marseille Université
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Acoustic black holesDuct acoustics
Sound attenuation
Visco-thermal dissipation
Causal-based optimization
topic Acoustic black holesDuct acoustics
Sound attenuation
Visco-thermal dissipation
Causal-based optimization
description 24 páginas, 17 figuras, 1 tabla
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/337104
url http://hdl.handle.net/10261/337104
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI//TED2021-130103B-I00
http://dx.doi.org/10.1016/j.jsv.2023.117825
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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