Inverse cascade behavior in freely decaying two-dimensional fluid turbulence

Autores
Mininni, Pablo Daniel; Pouquet, Annick
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present results from an ensemble of 50 runs of two-dimensional hydrodynamic turbulence with spatial resolution of 2048 2 grid points and from an ensemble of 10 runs with 4096 2 grid points. All runs in each ensemble have random initial conditions with the same initial integral scale, energy, enstrophy, and Reynolds number. When both ensemble and time averaged, an inverse energy cascade behavior is observed, even in the absence of external mechanical forcing: The energy spectrum at scales larger than the characteristic scale of the flow follows a k−5/3 law, with negative flux, together with a k−3 law at smaller scales, and a positive flux of enstrophy. The source of energy for this behavior comes from the modal energy around the energy-containing scale at t = 0. The results shed some light on the connections between decaying and forced turbulence and recent controversies in experimental studies of two-dimensional and magnetohydrodynamic turbulent flows.
Fil: Mininni, Pablo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina;
Fil: Pouquet, A.. NCAR (National Center for Atmospheric Research); Estados Unidos de América;
Materia
2D TURBULENCE
INVERSE CASCADE
DECAYING FLOWS
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:11336/643

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network_name_str CONICET Digital (CONICET)
spelling Inverse cascade behavior in freely decaying two-dimensional fluid turbulenceMininni, Pablo DanielPouquet, Annick2D TURBULENCEINVERSE CASCADEDECAYING FLOWShttps://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3We present results from an ensemble of 50 runs of two-dimensional hydrodynamic turbulence with spatial resolution of 2048 2 grid points and from an ensemble of 10 runs with 4096 2 grid points. All runs in each ensemble have random initial conditions with the same initial integral scale, energy, enstrophy, and Reynolds number. When both ensemble and time averaged, an inverse energy cascade behavior is observed, even in the absence of external mechanical forcing: The energy spectrum at scales larger than the characteristic scale of the flow follows a k−5/3 law, with negative flux, together with a k−3 law at smaller scales, and a positive flux of enstrophy. The source of energy for this behavior comes from the modal energy around the energy-containing scale at t = 0. The results shed some light on the connections between decaying and forced turbulence and recent controversies in experimental studies of two-dimensional and magnetohydrodynamic turbulent flows.Fil: Mininni, Pablo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina;Fil: Pouquet, A.. NCAR (National Center for Atmospheric Research); Estados Unidos de América;Amer Physical Soc2013-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/643Mininni, Pablo Daniel; Pouquet, A.; Inverse cascade behavior in freely decaying two-dimensional fluid turbulence; Amer Physical Soc; Physical Review E; 87; 3; 3-2013; 330021-330026;1539-3755enginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.87.033002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:21Zoai:ri.conicet.gov.ar:11336/643instacron: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 10:03:21.331CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
title Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
spellingShingle Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
Mininni, Pablo Daniel
2D TURBULENCE
INVERSE CASCADE
DECAYING FLOWS
title_short Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
title_full Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
title_fullStr Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
title_full_unstemmed Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
title_sort Inverse cascade behavior in freely decaying two-dimensional fluid turbulence
dc.creator.none.fl_str_mv Mininni, Pablo Daniel
Pouquet, Annick
author Mininni, Pablo Daniel
author_facet Mininni, Pablo Daniel
Pouquet, Annick
author_role author
author2 Pouquet, Annick
author2_role author
dc.subject.none.fl_str_mv 2D TURBULENCE
INVERSE CASCADE
DECAYING FLOWS
topic 2D TURBULENCE
INVERSE CASCADE
DECAYING FLOWS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.3
dc.description.none.fl_txt_mv We present results from an ensemble of 50 runs of two-dimensional hydrodynamic turbulence with spatial resolution of 2048 2 grid points and from an ensemble of 10 runs with 4096 2 grid points. All runs in each ensemble have random initial conditions with the same initial integral scale, energy, enstrophy, and Reynolds number. When both ensemble and time averaged, an inverse energy cascade behavior is observed, even in the absence of external mechanical forcing: The energy spectrum at scales larger than the characteristic scale of the flow follows a k−5/3 law, with negative flux, together with a k−3 law at smaller scales, and a positive flux of enstrophy. The source of energy for this behavior comes from the modal energy around the energy-containing scale at t = 0. The results shed some light on the connections between decaying and forced turbulence and recent controversies in experimental studies of two-dimensional and magnetohydrodynamic turbulent flows.
Fil: Mininni, Pablo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina;
Fil: Pouquet, A.. NCAR (National Center for Atmospheric Research); Estados Unidos de América;
description We present results from an ensemble of 50 runs of two-dimensional hydrodynamic turbulence with spatial resolution of 2048 2 grid points and from an ensemble of 10 runs with 4096 2 grid points. All runs in each ensemble have random initial conditions with the same initial integral scale, energy, enstrophy, and Reynolds number. When both ensemble and time averaged, an inverse energy cascade behavior is observed, even in the absence of external mechanical forcing: The energy spectrum at scales larger than the characteristic scale of the flow follows a k−5/3 law, with negative flux, together with a k−3 law at smaller scales, and a positive flux of enstrophy. The source of energy for this behavior comes from the modal energy around the energy-containing scale at t = 0. The results shed some light on the connections between decaying and forced turbulence and recent controversies in experimental studies of two-dimensional and magnetohydrodynamic turbulent flows.
publishDate 2013
dc.date.none.fl_str_mv 2013-03
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/11336/643
Mininni, Pablo Daniel; Pouquet, A.; Inverse cascade behavior in freely decaying two-dimensional fluid turbulence; Amer Physical Soc; Physical Review E; 87; 3; 3-2013; 330021-330026;
1539-3755
url http://hdl.handle.net/11336/643
identifier_str_mv Mininni, Pablo Daniel; Pouquet, A.; Inverse cascade behavior in freely decaying two-dimensional fluid turbulence; Amer Physical Soc; Physical Review E; 87; 3; 3-2013; 330021-330026;
1539-3755
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.87.033002
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 Amer Physical Soc
publisher.none.fl_str_mv Amer Physical Soc
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 13.070432