Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake

Autores
D'adamo, Juan Gastón Leonel; Godoy Diana, Ramiro; Wesfreid, José Eduardo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The wake flow around a circular cylinder at Re ≈ 100 performing rotatory oscillations has been thoroughly discussed in the literature, mostly focusing on the modifications to the natural Bénard-von Kármán vortex street that result from the forced shedding modes locked to the rotatory oscillation frequency. The usual experimental and theoretical frameworks at these Reynolds numbers are quasi-two-dimensional, because the secondary instabilities bringing a three-dimensional structure to the cylinder wake flow occur only at higher Reynolds numbers. In this paper, we show that a three-dimensional structure can appear below the usual three-dimensionalization threshold, when forcing with frequencies lower than the natural vortex shedding frequency, at high amplitudes, as a result of a previously unreported mechanism: a pulsed centrifugal instability of the oscillating Stokes layer at the wall of the cylinder. The present numerical investigation lets us in this way propose a physical explanation for the turbulence-like features reported in the recent experimental study by the present authors.
Fil: D'adamo, Juan Gastón Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Fil: Godoy Diana, Ramiro. Université Paris Diderot - Paris 7; Francia
Fil: Wesfreid, José Eduardo. Université Paris Diderot - Paris 7; Francia
Materia
Centrifugal Instabilities
Forced Wakes
Three-Dimensional Pulsed Instability
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:11336/40651
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wakeD'adamo, Juan Gastón LeonelGodoy Diana, RamiroWesfreid, José EduardoCentrifugal InstabilitiesForced WakesThree-Dimensional Pulsed Instabilityhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The wake flow around a circular cylinder at Re ≈ 100 performing rotatory oscillations has been thoroughly discussed in the literature, mostly focusing on the modifications to the natural Bénard-von Kármán vortex street that result from the forced shedding modes locked to the rotatory oscillation frequency. The usual experimental and theoretical frameworks at these Reynolds numbers are quasi-two-dimensional, because the secondary instabilities bringing a three-dimensional structure to the cylinder wake flow occur only at higher Reynolds numbers. In this paper, we show that a three-dimensional structure can appear below the usual three-dimensionalization threshold, when forcing with frequencies lower than the natural vortex shedding frequency, at high amplitudes, as a result of a previously unreported mechanism: a pulsed centrifugal instability of the oscillating Stokes layer at the wall of the cylinder. The present numerical investigation lets us in this way propose a physical explanation for the turbulence-like features reported in the recent experimental study by the present authors.Fil: D'adamo, Juan Gastón Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería; ArgentinaFil: Godoy Diana, Ramiro. Université Paris Diderot - Paris 7; FranciaFil: Wesfreid, José Eduardo. Université Paris Diderot - Paris 7; FranciaThe Royal Society2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40651D'adamo, Juan Gastón Leonel; Godoy Diana, Ramiro; Wesfreid, José Eduardo; Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake; The Royal Society; Proceedings Of The Royal Society Of London Series A-mathematical Physical And Engineering Sciences; 471; 2178; 6-2015; 1-161364-5021CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1098/rspa.2015.0011info:eu-repo/semantics/altIdentifier/url/http://rspa.royalsocietypublishing.org/content/471/2178/20150011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T10:35:52Zoai:ri.conicet.gov.ar:11336/40651instacron: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:34982025-11-05 10:35:52.693CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
title Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
spellingShingle Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
D'adamo, Juan Gastón Leonel
Centrifugal Instabilities
Forced Wakes
Three-Dimensional Pulsed Instability
title_short Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
title_full Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
title_fullStr Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
title_full_unstemmed Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
title_sort Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake
dc.creator.none.fl_str_mv D'adamo, Juan Gastón Leonel
Godoy Diana, Ramiro
Wesfreid, José Eduardo
author D'adamo, Juan Gastón Leonel
author_facet D'adamo, Juan Gastón Leonel
Godoy Diana, Ramiro
Wesfreid, José Eduardo
author_role author
author2 Godoy Diana, Ramiro
Wesfreid, José Eduardo
author2_role author
author
dc.subject.none.fl_str_mv Centrifugal Instabilities
Forced Wakes
Three-Dimensional Pulsed Instability
topic Centrifugal Instabilities
Forced Wakes
Three-Dimensional Pulsed Instability
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The wake flow around a circular cylinder at Re ≈ 100 performing rotatory oscillations has been thoroughly discussed in the literature, mostly focusing on the modifications to the natural Bénard-von Kármán vortex street that result from the forced shedding modes locked to the rotatory oscillation frequency. The usual experimental and theoretical frameworks at these Reynolds numbers are quasi-two-dimensional, because the secondary instabilities bringing a three-dimensional structure to the cylinder wake flow occur only at higher Reynolds numbers. In this paper, we show that a three-dimensional structure can appear below the usual three-dimensionalization threshold, when forcing with frequencies lower than the natural vortex shedding frequency, at high amplitudes, as a result of a previously unreported mechanism: a pulsed centrifugal instability of the oscillating Stokes layer at the wall of the cylinder. The present numerical investigation lets us in this way propose a physical explanation for the turbulence-like features reported in the recent experimental study by the present authors.
Fil: D'adamo, Juan Gastón Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Fil: Godoy Diana, Ramiro. Université Paris Diderot - Paris 7; Francia
Fil: Wesfreid, José Eduardo. Université Paris Diderot - Paris 7; Francia
description The wake flow around a circular cylinder at Re ≈ 100 performing rotatory oscillations has been thoroughly discussed in the literature, mostly focusing on the modifications to the natural Bénard-von Kármán vortex street that result from the forced shedding modes locked to the rotatory oscillation frequency. The usual experimental and theoretical frameworks at these Reynolds numbers are quasi-two-dimensional, because the secondary instabilities bringing a three-dimensional structure to the cylinder wake flow occur only at higher Reynolds numbers. In this paper, we show that a three-dimensional structure can appear below the usual three-dimensionalization threshold, when forcing with frequencies lower than the natural vortex shedding frequency, at high amplitudes, as a result of a previously unreported mechanism: a pulsed centrifugal instability of the oscillating Stokes layer at the wall of the cylinder. The present numerical investigation lets us in this way propose a physical explanation for the turbulence-like features reported in the recent experimental study by the present authors.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
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/11336/40651
D'adamo, Juan Gastón Leonel; Godoy Diana, Ramiro; Wesfreid, José Eduardo; Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake; The Royal Society; Proceedings Of The Royal Society Of London Series A-mathematical Physical And Engineering Sciences; 471; 2178; 6-2015; 1-16
1364-5021
CONICET Digital
CONICET
url http://hdl.handle.net/11336/40651
identifier_str_mv D'adamo, Juan Gastón Leonel; Godoy Diana, Ramiro; Wesfreid, José Eduardo; Centrifugal instability of Stokes layers in crossflow: The case of a forced cylinder wake; The Royal Society; Proceedings Of The Royal Society Of London Series A-mathematical Physical And Engineering Sciences; 471; 2178; 6-2015; 1-16
1364-5021
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1098/rspa.2015.0011
info:eu-repo/semantics/altIdentifier/url/http://rspa.royalsocietypublishing.org/content/471/2178/20150011
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 The Royal Society
publisher.none.fl_str_mv The Royal Society
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
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score 13.087074

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