Coupling boundary elements to a raytracing procedure

Autores
Hampel, S.; Langer, S.; Cisilino, Adrian Pablo
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Typical outdoor sound propagation problems are governed by two principal phenomena: (i) diffraction in the vicinity of the noise source due to objects such as buildings or insulation barriers, and (ii) refraction at long distances from the source as a consequence of the effects of wind and temperature. The boundary element method (BEM) is well suited to account for the diffraction phenomena in the near field, while the raytracing method based on geometrical acoustics is more effective to deal with the refraction phenomena. In this paper, a new approach is presented which couples the direct BEM and a raytracing model in order to combine their advantages. Two alternative coupling procedures are developed, one is using a singular indirect BEM and the other is based on the method of fundamental solutions (MFS). The direct boundary element model is applied first for solving the near field and computing the sound pressure along an auxiliary interface which limits the near field extent. Then, a singular indirect BEM or MFS is used to find the intensities of a number of point sources which produce the same sound pressure on the interface to that resulting from the near-field analysis. Finally, the point sources are the input data for the raytracing model of the far field. A 3D implementation of the proposed method is finally applied to an outdoor sound propagation problem.
Fil: Hampel, S.. Technical University Braunschweig; Alemania
Fil: Langer, S.. Technical University Clausthal; Alemania
Fil: Cisilino, Adrian Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Materia
Acoustics
Bem
Coupling
Hybrid Method
Outdoor Sound Propagation
Raytracing
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78720
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/78720
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Coupling boundary elements to a raytracing procedureHampel, S.Langer, S.Cisilino, Adrian PabloAcousticsBemCouplingHybrid MethodOutdoor Sound PropagationRaytracinghttps://purl.org/becyt/ford/2.1https://purl.org/becyt/ford/2Typical outdoor sound propagation problems are governed by two principal phenomena: (i) diffraction in the vicinity of the noise source due to objects such as buildings or insulation barriers, and (ii) refraction at long distances from the source as a consequence of the effects of wind and temperature. The boundary element method (BEM) is well suited to account for the diffraction phenomena in the near field, while the raytracing method based on geometrical acoustics is more effective to deal with the refraction phenomena. In this paper, a new approach is presented which couples the direct BEM and a raytracing model in order to combine their advantages. Two alternative coupling procedures are developed, one is using a singular indirect BEM and the other is based on the method of fundamental solutions (MFS). The direct boundary element model is applied first for solving the near field and computing the sound pressure along an auxiliary interface which limits the near field extent. Then, a singular indirect BEM or MFS is used to find the intensities of a number of point sources which produce the same sound pressure on the interface to that resulting from the near-field analysis. Finally, the point sources are the input data for the raytracing model of the far field. A 3D implementation of the proposed method is finally applied to an outdoor sound propagation problem.Fil: Hampel, S.. Technical University Braunschweig; AlemaniaFil: Langer, S.. Technical University Clausthal; AlemaniaFil: Cisilino, Adrian Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaJohn Wiley & Sons Ltd2008-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78720Hampel, S.; Langer, S.; Cisilino, Adrian Pablo; Coupling boundary elements to a raytracing procedure; John Wiley & Sons Ltd; International Journal for Numerical Methods in Engineering; 73; 3; 1-2008; 427-4450029-5981CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.2080info:eu-repo/semantics/altIdentifier/doi/10.1002/nme.2080info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:39:41Zoai:ri.conicet.gov.ar:11336/78720instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:39:41.896CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Coupling boundary elements to a raytracing procedure
title Coupling boundary elements to a raytracing procedure
spellingShingle Coupling boundary elements to a raytracing procedure
Hampel, S.
Acoustics
Bem
Coupling
Hybrid Method
Outdoor Sound Propagation
Raytracing
title_short Coupling boundary elements to a raytracing procedure
title_full Coupling boundary elements to a raytracing procedure
title_fullStr Coupling boundary elements to a raytracing procedure
title_full_unstemmed Coupling boundary elements to a raytracing procedure
title_sort Coupling boundary elements to a raytracing procedure
dc.creator.none.fl_str_mv Hampel, S.
Langer, S.
Cisilino, Adrian Pablo
author Hampel, S.
author_facet Hampel, S.
Langer, S.
Cisilino, Adrian Pablo
author_role author
author2 Langer, S.
Cisilino, Adrian Pablo
author2_role author
author
dc.subject.none.fl_str_mv Acoustics
Bem
Coupling
Hybrid Method
Outdoor Sound Propagation
Raytracing
topic Acoustics
Bem
Coupling
Hybrid Method
Outdoor Sound Propagation
Raytracing
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.1
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Typical outdoor sound propagation problems are governed by two principal phenomena: (i) diffraction in the vicinity of the noise source due to objects such as buildings or insulation barriers, and (ii) refraction at long distances from the source as a consequence of the effects of wind and temperature. The boundary element method (BEM) is well suited to account for the diffraction phenomena in the near field, while the raytracing method based on geometrical acoustics is more effective to deal with the refraction phenomena. In this paper, a new approach is presented which couples the direct BEM and a raytracing model in order to combine their advantages. Two alternative coupling procedures are developed, one is using a singular indirect BEM and the other is based on the method of fundamental solutions (MFS). The direct boundary element model is applied first for solving the near field and computing the sound pressure along an auxiliary interface which limits the near field extent. Then, a singular indirect BEM or MFS is used to find the intensities of a number of point sources which produce the same sound pressure on the interface to that resulting from the near-field analysis. Finally, the point sources are the input data for the raytracing model of the far field. A 3D implementation of the proposed method is finally applied to an outdoor sound propagation problem.
Fil: Hampel, S.. Technical University Braunschweig; Alemania
Fil: Langer, S.. Technical University Clausthal; Alemania
Fil: Cisilino, Adrian Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
description Typical outdoor sound propagation problems are governed by two principal phenomena: (i) diffraction in the vicinity of the noise source due to objects such as buildings or insulation barriers, and (ii) refraction at long distances from the source as a consequence of the effects of wind and temperature. The boundary element method (BEM) is well suited to account for the diffraction phenomena in the near field, while the raytracing method based on geometrical acoustics is more effective to deal with the refraction phenomena. In this paper, a new approach is presented which couples the direct BEM and a raytracing model in order to combine their advantages. Two alternative coupling procedures are developed, one is using a singular indirect BEM and the other is based on the method of fundamental solutions (MFS). The direct boundary element model is applied first for solving the near field and computing the sound pressure along an auxiliary interface which limits the near field extent. Then, a singular indirect BEM or MFS is used to find the intensities of a number of point sources which produce the same sound pressure on the interface to that resulting from the near-field analysis. Finally, the point sources are the input data for the raytracing model of the far field. A 3D implementation of the proposed method is finally applied to an outdoor sound propagation problem.
publishDate 2008
dc.date.none.fl_str_mv 2008-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/78720
Hampel, S.; Langer, S.; Cisilino, Adrian Pablo; Coupling boundary elements to a raytracing procedure; John Wiley & Sons Ltd; International Journal for Numerical Methods in Engineering; 73; 3; 1-2008; 427-445
0029-5981
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78720
identifier_str_mv Hampel, S.; Langer, S.; Cisilino, Adrian Pablo; Coupling boundary elements to a raytracing procedure; John Wiley & Sons Ltd; International Journal for Numerical Methods in Engineering; 73; 3; 1-2008; 427-445
0029-5981
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.2080
info:eu-repo/semantics/altIdentifier/doi/10.1002/nme.2080
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846082884046159872
score 13.22299

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