Rotating helical turbulence. I. Global evolution and spectral behavior

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 pres...

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Bibliographic Details
Authors: Mininni, P.D., Pouquet, A.
Format: article
Status:Published version
Publication Date:2010
Country:Argentina
Institution:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
Repository:Biblioteca Digital (UBA-FCEN)
Language:English
OAI Identifier:paperaa:paper_10706631_v22_n3_p5_Mininni
Online Access:http://hdl.handle.net/20.500.12110/paper_10706631_v22_n3_p5_Mininni
Access Level:Open access
Keyword: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
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oai_identifier_str paperaa:paper_10706631_v22_n3_p5_Mininni
network_acronym_str AR
network_name_str Argentina
repository_id_str
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/ar2024-05-10T10:42:39Zpaperaa: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:18962024-05-10 10:42:40.232Biblioteca 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
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
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (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 15,198674

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