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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/643
Ver los metadatos del registro completo
id |
CONICETDig_e611a2fe7df579c79075c4e626e9783d |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/643 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
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 |
_version_ |
1844613847983325184 |
score |
13.070432 |