Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow

23 páginas, 13 figuras, 1 tabla

Detalles Bibliográficos
Autores: Cédric, Maury, Bravo, Teresa, Fawad, Ali
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/399572
Acceso en línea:http://hdl.handle.net/10261/399572
Access Level:acceso abierto
Palabra clave:Rainbow trapping silencers
Micro-perforated panels
Aeroacoustic optimization
Friction factor
Flow duct acoustics
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spelling Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flowCédric, MauryBravo, TeresaFawad, AliRainbow trapping silencersMicro-perforated panelsAeroacoustic optimizationFriction factorFlow duct acoustics23 páginas, 13 figuras, 1 tablaThe aeroacoustic optimization of rainbow trapping silencers (RTS) shielded from a low-speed turbulent flow by a micro-perforated panel (MPP) has been hardly explored in order to achieve simultaneous high broadband dissipation and low friction factor. Direct global optimization from aeroacoustic numerical models is still cumbersome. A cost-efficient hybrid optimization process is proposed based on maximization of the total dissipated power calculated from a Transfer Matrix Model (TMM) under downstream propagation conditions subject to an aerodynamic constraint on the MPP holes pitch and diameter based on RANS-Realizable k – ε parametric study. The TMM is validated against Large Eddy Simulations at global scale on the scattering properties of the MPP- RTS, but also at MPP hole scale, pointing out the key role played by in-hole vortical patterns in the dissipation mechanism and the flow-induced reduction of air mass at the wetted inlet of MPP holes. The hybrid optimization approach shows that a common set of MPP-RTS parameters are able to provide both high dissipation, slow sound and low drag performance in Darcy regime. Aeroacoustic measurements in a low-speed wind tunnel on a hybrid-optimized MPP-RTS proto- type corroborate the maximum total dissipation objective and friction factor constraint. Down- stream and upstream propagation conditions are found to respectively reduce and enlarge towards low and high frequencies the efficiency range of MPP-RTS whereby high dissipation and attenuation effects are prominent and occur well below that of unshielded RTS.This work is part of the project PID2022-139414OB-I00 funded by MCIN/AEI/10.13039/501100011033/ and by “ERDF A way of making Europe”. 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-22-RE-AB-157). The authors are grateful to E. Bertrand, M. Amielh and D. Mazzoni for their technical and experimental support during the wind-tunnel testing at IRPHE Laboratory.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Gouvernement de la République françaiseBravo, Teresa [0000-0003-2207-6383]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/399572reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-139414OB-I00https://www.sciencedirect.com/science/article/pii/S0022460X25003025Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3995722026-05-22T06:33:51Z
dc.title.none.fl_str_mv Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
title Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
spellingShingle Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
Cédric, Maury
Rainbow trapping silencers
Micro-perforated panels
Aeroacoustic optimization
Friction factor
Flow duct acoustics
title_short Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
title_full Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
title_fullStr Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
title_full_unstemmed Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
title_sort Micro-perforated rainbow-trapping silencers with broadband sound dissipation and reduced drag under low-speed grazing flow
dc.creator.none.fl_str_mv Cédric, Maury
Bravo, Teresa
Fawad, Ali
author Cédric, Maury
author_facet Cédric, Maury
Bravo, Teresa
Fawad, Ali
author_role author
author2 Bravo, Teresa
Fawad, Ali
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Gouvernement de la République française
Bravo, Teresa [0000-0003-2207-6383]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Rainbow trapping silencers
Micro-perforated panels
Aeroacoustic optimization
Friction factor
Flow duct acoustics
topic Rainbow trapping silencers
Micro-perforated panels
Aeroacoustic optimization
Friction factor
Flow duct acoustics
description 23 páginas, 13 figuras, 1 tabla
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
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/10261/399572
url http://hdl.handle.net/10261/399572
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/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-139414OB-I00
https://www.sciencedirect.com/science/article/pii/S0022460X25003025
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 15,812455

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