Rotating helical turbulence. I. Global evolution and spectral behavior

Autores
Mininni, P.D.; Pouquet, A.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present results from two 15363 direct numerical simulations of rotating turbulence where both energy and helicity are injected into the flow by an external forcing. The dual cascade of energy and helicity toward smaller scales observed in isotropic and homogeneous turbulence is broken in the presence of rotation, with the development of an inverse cascade of energy now coexisting with direct cascades of energy and helicity. In the direct cascade range, the flux of helicity dominates over that of energy at low Rossby number. These cascades have several consequences for the statistics of the flow. The evolution of global quantities and of the energy and helicity spectra is studied, and comparisons with simulations at different Reynolds and Rossby numbers at lower resolution are done to identify scaling laws. © 2010 American Institute of Physics.
Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Phys. Fluids 2010;22(3):5-9
Materia
External forcing
Global quantities
Helical turbulence
Helicities
Homogeneous turbulence
Low Rossby number
Lower resolution
Reynolds
Rossby numbers
Rotating turbulence
Spectral behaviors
Computer simulation
Turbulence
Rotation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_10706631_v22_n3_p5_Mininni
Acceder
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oai_identifier_str paperaa:paper_10706631_v22_n3_p5_Mininni
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Rotating helical turbulence. I. Global evolution and spectral behaviorMininni, P.D.Pouquet, A.External forcingGlobal quantitiesHelical turbulenceHelicitiesHomogeneous turbulenceLow Rossby numberLower resolutionReynoldsRossby numbersRotating turbulenceSpectral behaviorsComputer simulationTurbulenceRotationWe present results from two 15363 direct numerical simulations of rotating turbulence where both energy and helicity are injected into the flow by an external forcing. The dual cascade of energy and helicity toward smaller scales observed in isotropic and homogeneous turbulence is broken in the presence of rotation, with the development of an inverse cascade of energy now coexisting with direct cascades of energy and helicity. In the direct cascade range, the flux of helicity dominates over that of energy at low Rossby number. These cascades have several consequences for the statistics of the flow. The evolution of global quantities and of the energy and helicity spectra is studied, and comparisons with simulations at different Reynolds and Rossby numbers at lower resolution are done to identify scaling laws. © 2010 American Institute of Physics.Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_10706631_v22_n3_p5_MininniPhys. Fluids 2010;22(3):5-9reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-29T13:42:57Zpaperaa:paper_10706631_v22_n3_p5_MininniInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:42:59.02Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Rotating helical turbulence. I. Global evolution and spectral behavior
title Rotating helical turbulence. I. Global evolution and spectral behavior
spellingShingle Rotating helical turbulence. I. Global evolution and spectral behavior
Mininni, P.D.
External forcing
Global quantities
Helical turbulence
Helicities
Homogeneous turbulence
Low Rossby number
Lower resolution
Reynolds
Rossby numbers
Rotating turbulence
Spectral behaviors
Computer simulation
Turbulence
Rotation
title_short Rotating helical turbulence. I. Global evolution and spectral behavior
title_full Rotating helical turbulence. I. Global evolution and spectral behavior
title_fullStr Rotating helical turbulence. I. Global evolution and spectral behavior
title_full_unstemmed Rotating helical turbulence. I. Global evolution and spectral behavior
title_sort Rotating helical turbulence. I. Global evolution and spectral behavior
dc.creator.none.fl_str_mv Mininni, P.D.
Pouquet, A.
author Mininni, P.D.
author_facet Mininni, P.D.
Pouquet, A.
author_role author
author2 Pouquet, A.
author2_role author
dc.subject.none.fl_str_mv External forcing
Global quantities
Helical turbulence
Helicities
Homogeneous turbulence
Low Rossby number
Lower resolution
Reynolds
Rossby numbers
Rotating turbulence
Spectral behaviors
Computer simulation
Turbulence
Rotation
topic External forcing
Global quantities
Helical turbulence
Helicities
Homogeneous turbulence
Low Rossby number
Lower resolution
Reynolds
Rossby numbers
Rotating turbulence
Spectral behaviors
Computer simulation
Turbulence
Rotation
dc.description.none.fl_txt_mv We present results from two 15363 direct numerical simulations of rotating turbulence where both energy and helicity are injected into the flow by an external forcing. The dual cascade of energy and helicity toward smaller scales observed in isotropic and homogeneous turbulence is broken in the presence of rotation, with the development of an inverse cascade of energy now coexisting with direct cascades of energy and helicity. In the direct cascade range, the flux of helicity dominates over that of energy at low Rossby number. These cascades have several consequences for the statistics of the flow. The evolution of global quantities and of the energy and helicity spectra is studied, and comparisons with simulations at different Reynolds and Rossby numbers at lower resolution are done to identify scaling laws. © 2010 American Institute of Physics.
Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description We present results from two 15363 direct numerical simulations of rotating turbulence where both energy and helicity are injected into the flow by an external forcing. The dual cascade of energy and helicity toward smaller scales observed in isotropic and homogeneous turbulence is broken in the presence of rotation, with the development of an inverse cascade of energy now coexisting with direct cascades of energy and helicity. In the direct cascade range, the flux of helicity dominates over that of energy at low Rossby number. These cascades have several consequences for the statistics of the flow. The evolution of global quantities and of the energy and helicity spectra is studied, and comparisons with simulations at different Reynolds and Rossby numbers at lower resolution are done to identify scaling laws. © 2010 American Institute of Physics.
publishDate 2010
dc.date.none.fl_str_mv 2010
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/20.500.12110/paper_10706631_v22_n3_p5_Mininni
url http://hdl.handle.net/20.500.12110/paper_10706631_v22_n3_p5_Mininni
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Phys. Fluids 2010;22(3):5-9
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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score 13.070432

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