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3D acoustic modelling of dissipative silencers with nonhomogeneous properties and mean flow

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3D acoustic modelling of dissipative silencers with nonhomogeneous properties and mean flow

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Nombre: Sánchez;F. D. ...
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dc.contributor.author Sánchez Orgaz, Eva María es_ES
dc.contributor.author Denia, Francisco David es_ES
dc.contributor.author Martínez-Casas, José es_ES
dc.contributor.author Baeza, Luis es_ES
dc.date.accessioned 2015-03-10T12:00:03Z
dc.date.available 2015-03-10T12:00:03Z
dc.date.issued 2014-06
dc.identifier.issn 1687-8132
dc.identifier.uri http://hdl.handle.net/10251/47916
dc.description.abstract A finite element approach is proposed for the acoustic analysis of automotive silencers including a perforated duct with uniform axial mean flow and an outer chamber with heterogeneous absorbent material. This material can be characterized by means of its equivalent acoustic properties, considered coordinate-dependent via the introduction of a heterogeneous bulk density, and the corresponding material airflow resistivity variations. An approach has been implemented to solve the pressure wave equation for a nonmoving heterogeneous medium, associated with the problem of sound propagation in the outer chamber. On the other hand, the governing equation in the central duct has been solved in terms of the acoustic velocity potential considering the presence of a moving medium. The coupling between both regions and the corresponding acoustic fields has been carried out by means of a perforated duct and its acoustic impedance, adapted here to include absorbent material heterogeneities and mean flow effects simultaneously. It has been found that bulk density heterogeneities have a considerable influence on the silencer transmission loss. es_ES
dc.description.sponsorship This work was supported by Ministerio de Economia y Competitividad (Projects DPI2010-15412 and TRA2013-45596-C2-1-R), Conselleria d'Educacio, Cultura i Esport (Project Prometeo/2012/023), and Programa de Apoyo a la Investigacion y Desarrollo (PAID-05-12 and Project SP20120452) of Universitat Politecnica de Valencia. en_EN
dc.language Inglés es_ES
dc.publisher Hindawi Publishing Corporation es_ES
dc.relation.ispartof Advances in Mechanical Engineering es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Dissipative silencer es_ES
dc.subject Absorbent material es_ES
dc.subject Bulk density es_ES
dc.subject Heterogeneity es_ES
dc.subject Flow es_ES
dc.subject FEM es_ES
dc.subject.classification INGENIERIA MECANICA es_ES
dc.subject.classification CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA es_ES
dc.title 3D acoustic modelling of dissipative silencers with nonhomogeneous properties and mean flow es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1155/2014/537935
dc.relation.projectID info:eu-repo/grantAgreement/MICINN//DPI2010-15412/ES/MODELOS ACUSTICOS AVANZADOS DE DEGRADACION EN MATERIALES. APLICACION A SILENCIADORES, CATALIZADORES Y FILTROS DE PARTICULAS./ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO%2F2012%2F023/ES/MODELADO NUMERICO AVANZADO EN INGENIERIA MECANICA/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/UPV//PAID-05-12-SP20120452/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//TRA2013-45596-C2-1-R/ES/DESARROLLO DE NUEVAS TECNOLOGIAS DESTINADAS A REDUCIR EL IMPACTO ACUSTICO DEL TRANSPORTE FERROVIARIO EN ENTORNOS URBANOS/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Centro de Investigación en Tecnología de Vehículos - Centre d'Investigació en Tecnologia de Vehicles es_ES
dc.description.bibliographicCitation Sánchez Orgaz, EM.; Denia, FD.; Martínez-Casas, J.; Baeza, L. (2014). 3D acoustic modelling of dissipative silencers with nonhomogeneous properties and mean flow. Advances in Mechanical Engineering. 2014(1):1-10. https://doi.org/10.1155/2014/537935 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1155/2014/537935 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 10 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 2014 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 268600
dc.identifier.eissn 1687-8140
dc.contributor.funder Universitat Politècnica de València es_ES
dc.contributor.funder Generalitat Valenciana es_ES
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