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dc.contributor.author | Boulvert, Jean | es_ES |
dc.contributor.author | Gabard, Gwenael | es_ES |
dc.contributor.author | Romero-García, Vicente | es_ES |
dc.contributor.author | Groby, Jean-Philippe | es_ES |
dc.date.accessioned | 2023-06-22T18:02:35Z | |
dc.date.available | 2023-06-22T18:02:35Z | |
dc.date.issued | 2022-06-15 | es_ES |
dc.identifier.issn | 2045-2322 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/194494 | |
dc.description.abstract | [EN] This work deals with wave absorption in reciprocal asymmetric scattering problem by addressing the acoustic problem of compact absorbers for perfect unidirectional absorption, flush mounted to the walls of wide ducts. These absorbers are composed of several side-by-side resonators that are usually of different geometry and thus detuned to yield an asymmetric acoustic response. A simple lumped-element model analysis is performed to link the dependence of the optimal resonators surface impedance, resonance frequency, and losses to the duct cross-sectional area and resonator spacing. This analysis unifies those of several specific configurations into a unique problem. In addition, the impact of the potential evanescent coupling between the resonators, which is usually neglected, is carefully studied. This coupling can have a strong impact especially on the behavior of compact absorbers lining wide ducts. To reduce the evanescent coupling, the resonators should be relatively small and therefore their resonances should be damped, and not arranged by order of increasing or decreasing resonant frequency. Finally, such an absorber is designed and optimized for perfect unidirectional absorption to prove the relevance of the analysis. The absorber is 30 cm long and 5 cm thick and covers a single side of a 14.8 x 15 cm(2) rectangular duct. A mean absorption coefficient of 99% is obtained experimentally between 700 and 800 Hz. | es_ES |
dc.description.sponsorship | The authors acknowledge the financial support from the ANR industrial chair MACIA (ANR-16-CHIN-0002). They also acknowledge the Safran group for supporting and funding this research. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Nature Publishing Group | es_ES |
dc.relation.ispartof | Scientific Reports | es_ES |
dc.rights | Reconocimiento (by) | es_ES |
dc.subject.classification | MATEMATICA APLICADA | es_ES |
dc.title | Compact resonant systems for perfect and broadband sound absorption in wide waveguides in transmission problems | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1038/s41598-022-13944-1 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/ANR//ANR-16-CHIN-0002/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Telecomunicación - Escola Tècnica Superior d'Enginyers de Telecomunicació | es_ES |
dc.description.bibliographicCitation | Boulvert, J.; Gabard, G.; Romero-García, V.; Groby, J. (2022). Compact resonant systems for perfect and broadband sound absorption in wide waveguides in transmission problems. Scientific Reports. 12(1):1-13. https://doi.org/10.1038/s41598-022-13944-1 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1038/s41598-022-13944-1 | es_ES |
dc.description.upvformatpinicio | 1 | es_ES |
dc.description.upvformatpfin | 13 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 12 | es_ES |
dc.description.issue | 1 | es_ES |
dc.identifier.pmid | 35705604 | es_ES |
dc.identifier.pmcid | PMC9200824 | es_ES |
dc.relation.pasarela | S\475908 | es_ES |
dc.contributor.funder | Agence Nationale de la Recherche, Francia | es_ES |
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