Numerical and experimental study of unsteady wind loads on panels of a radar aerial

Autores
Scarabino, Ana Elena; García Saínz, Mariano Oscar; Bacchi, Federico; Delnero, Juan Sebastian; Cánchero, Andrés
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work experimentally and numerically analyzes the flow configurations and the dynamic wind loads on panels of rectangular L/h 5:1 cross section mounted on a structural frame of rectangular bars of L/h 0.5:1, corresponding to a radar structure. The fluid dynamic interaction between panels and frame wakes imposes dynamic loads on the panels, with particular frequencies and Strouhal numbers, different from those of isolated elements. The numerical scheme is validated by comparison with mean forces and velocity spectra of a panel wake obtained by wind tunnel tests. The flow configuration is analyzed through images of the numerical simulations. For a large number of panels, as in the radar array, their wakes couple in either phase or counter-phase configurations, changing the resultant forces on each panel. Instantaneous normal and tangential force coefficients are reported; their spectra show two distinct peaks, caused by the interaction of the wakes. Finally, a scaled model of a rectangular structure comprised of panels and frame elements is tested in the boundary layer wind tunnel in order to determine the influence of the velocity variation with height and the three-dimensionality of the bulk flow around the structure. Results show that the unsteady aerodynamic loads, being strongly influenced by the vortex shedding of the supporting elements and by the global 3-D geometry of the array, differ considerably on a panel in this array from loads acting on an isolated panel, not only in magnitude, but also in frequency.
Fil: Scarabino, Ana Elena. Universidad Nacional de La Plata; Argentina
Fil: García Saínz, Mariano Oscar. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bacchi, Federico. Universidad Nacional de La Plata; Argentina
Fil: Delnero, Juan Sebastian. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cánchero, Andrés. Universidad Nacional de La Plata; Argentina
Materia
Dynamic Loads
Strouhal Number
Wake Interaction
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:11336/55245
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Numerical and experimental study of unsteady wind loads on panels of a radar aerialScarabino, Ana ElenaGarcía Saínz, Mariano OscarBacchi, FedericoDelnero, Juan SebastianCánchero, AndrésDynamic LoadsStrouhal NumberWake Interactionhttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2This work experimentally and numerically analyzes the flow configurations and the dynamic wind loads on panels of rectangular L/h 5:1 cross section mounted on a structural frame of rectangular bars of L/h 0.5:1, corresponding to a radar structure. The fluid dynamic interaction between panels and frame wakes imposes dynamic loads on the panels, with particular frequencies and Strouhal numbers, different from those of isolated elements. The numerical scheme is validated by comparison with mean forces and velocity spectra of a panel wake obtained by wind tunnel tests. The flow configuration is analyzed through images of the numerical simulations. For a large number of panels, as in the radar array, their wakes couple in either phase or counter-phase configurations, changing the resultant forces on each panel. Instantaneous normal and tangential force coefficients are reported; their spectra show two distinct peaks, caused by the interaction of the wakes. Finally, a scaled model of a rectangular structure comprised of panels and frame elements is tested in the boundary layer wind tunnel in order to determine the influence of the velocity variation with height and the three-dimensionality of the bulk flow around the structure. Results show that the unsteady aerodynamic loads, being strongly influenced by the vortex shedding of the supporting elements and by the global 3-D geometry of the array, differ considerably on a panel in this array from loads acting on an isolated panel, not only in magnitude, but also in frequency.Fil: Scarabino, Ana Elena. Universidad Nacional de La Plata; ArgentinaFil: García Saínz, Mariano Oscar. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bacchi, Federico. Universidad Nacional de La Plata; ArgentinaFil: Delnero, Juan Sebastian. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cánchero, Andrés. Universidad Nacional de La Plata; ArgentinaTechno-Press2016-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55245Scarabino, Ana Elena; García Saínz, Mariano Oscar; Bacchi, Federico; Delnero, Juan Sebastian; Cánchero, Andrés; Numerical and experimental study of unsteady wind loads on panels of a radar aerial; Techno-Press; Wind And Structures; 23; 1; 7-2016; 1-181226-61161598-6225CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.12989/was.2016.23.1.001info:eu-repo/semantics/altIdentifier/url/http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=KJKHCF_2016_v23n1_1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:18:47Zoai:ri.conicet.gov.ar:11336/55245instacron: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:34982025-09-29 10:18:47.349CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Numerical and experimental study of unsteady wind loads on panels of a radar aerial
title Numerical and experimental study of unsteady wind loads on panels of a radar aerial
spellingShingle Numerical and experimental study of unsteady wind loads on panels of a radar aerial
Scarabino, Ana Elena
Dynamic Loads
Strouhal Number
Wake Interaction
title_short Numerical and experimental study of unsteady wind loads on panels of a radar aerial
title_full Numerical and experimental study of unsteady wind loads on panels of a radar aerial
title_fullStr Numerical and experimental study of unsteady wind loads on panels of a radar aerial
title_full_unstemmed Numerical and experimental study of unsteady wind loads on panels of a radar aerial
title_sort Numerical and experimental study of unsteady wind loads on panels of a radar aerial
dc.creator.none.fl_str_mv Scarabino, Ana Elena
García Saínz, Mariano Oscar
Bacchi, Federico
Delnero, Juan Sebastian
Cánchero, Andrés
author Scarabino, Ana Elena
author_facet Scarabino, Ana Elena
García Saínz, Mariano Oscar
Bacchi, Federico
Delnero, Juan Sebastian
Cánchero, Andrés
author_role author
author2 García Saínz, Mariano Oscar
Bacchi, Federico
Delnero, Juan Sebastian
Cánchero, Andrés
author2_role author
author
author
author
dc.subject.none.fl_str_mv Dynamic Loads
Strouhal Number
Wake Interaction
topic Dynamic Loads
Strouhal Number
Wake Interaction
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This work experimentally and numerically analyzes the flow configurations and the dynamic wind loads on panels of rectangular L/h 5:1 cross section mounted on a structural frame of rectangular bars of L/h 0.5:1, corresponding to a radar structure. The fluid dynamic interaction between panels and frame wakes imposes dynamic loads on the panels, with particular frequencies and Strouhal numbers, different from those of isolated elements. The numerical scheme is validated by comparison with mean forces and velocity spectra of a panel wake obtained by wind tunnel tests. The flow configuration is analyzed through images of the numerical simulations. For a large number of panels, as in the radar array, their wakes couple in either phase or counter-phase configurations, changing the resultant forces on each panel. Instantaneous normal and tangential force coefficients are reported; their spectra show two distinct peaks, caused by the interaction of the wakes. Finally, a scaled model of a rectangular structure comprised of panels and frame elements is tested in the boundary layer wind tunnel in order to determine the influence of the velocity variation with height and the three-dimensionality of the bulk flow around the structure. Results show that the unsteady aerodynamic loads, being strongly influenced by the vortex shedding of the supporting elements and by the global 3-D geometry of the array, differ considerably on a panel in this array from loads acting on an isolated panel, not only in magnitude, but also in frequency.
Fil: Scarabino, Ana Elena. Universidad Nacional de La Plata; Argentina
Fil: García Saínz, Mariano Oscar. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bacchi, Federico. Universidad Nacional de La Plata; Argentina
Fil: Delnero, Juan Sebastian. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cánchero, Andrés. Universidad Nacional de La Plata; Argentina
description This work experimentally and numerically analyzes the flow configurations and the dynamic wind loads on panels of rectangular L/h 5:1 cross section mounted on a structural frame of rectangular bars of L/h 0.5:1, corresponding to a radar structure. The fluid dynamic interaction between panels and frame wakes imposes dynamic loads on the panels, with particular frequencies and Strouhal numbers, different from those of isolated elements. The numerical scheme is validated by comparison with mean forces and velocity spectra of a panel wake obtained by wind tunnel tests. The flow configuration is analyzed through images of the numerical simulations. For a large number of panels, as in the radar array, their wakes couple in either phase or counter-phase configurations, changing the resultant forces on each panel. Instantaneous normal and tangential force coefficients are reported; their spectra show two distinct peaks, caused by the interaction of the wakes. Finally, a scaled model of a rectangular structure comprised of panels and frame elements is tested in the boundary layer wind tunnel in order to determine the influence of the velocity variation with height and the three-dimensionality of the bulk flow around the structure. Results show that the unsteady aerodynamic loads, being strongly influenced by the vortex shedding of the supporting elements and by the global 3-D geometry of the array, differ considerably on a panel in this array from loads acting on an isolated panel, not only in magnitude, but also in frequency.
publishDate 2016
dc.date.none.fl_str_mv 2016-07
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/11336/55245
Scarabino, Ana Elena; García Saínz, Mariano Oscar; Bacchi, Federico; Delnero, Juan Sebastian; Cánchero, Andrés; Numerical and experimental study of unsteady wind loads on panels of a radar aerial; Techno-Press; Wind And Structures; 23; 1; 7-2016; 1-18
1226-6116
1598-6225
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55245
identifier_str_mv Scarabino, Ana Elena; García Saínz, Mariano Oscar; Bacchi, Federico; Delnero, Juan Sebastian; Cánchero, Andrés; Numerical and experimental study of unsteady wind loads on panels of a radar aerial; Techno-Press; Wind And Structures; 23; 1; 7-2016; 1-18
1226-6116
1598-6225
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.12989/was.2016.23.1.001
info:eu-repo/semantics/altIdentifier/url/http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=KJKHCF_2016_v23n1_1
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 Techno-Press
publisher.none.fl_str_mv Techno-Press
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_ 1844614153222750208
score 13.070432

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