Rotating helical turbulence. I. Global evolution and spectral behavior

Mostrar todas las versiones(3)

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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Mininni, P.D., Pouquet, A.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2010
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10706631_v22_n3_p5_Mininni
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_10706631_v22_n3_p5_Mininni
record_format dspace
spelling paperaa:paper_10706631_v22_n3_p5_Mininni2023-06-12T16:49:25Z Rotating helical turbulence. I. Global evolution and spectral behavior Phys. Fluids 2010;22(3):5-9 Mininni, P.D. Pouquet, A. 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 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. 2010 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10706631_v22_n3_p5_Mininni
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
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
spellingShingle 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
Mininni, P.D.
Pouquet, A.
Rotating helical turbulence. I. Global evolution and spectral behavior
topic_facet 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.
format Artículo
Artículo
publishedVersion
author Mininni, P.D.
Pouquet, A.
author_facet Mininni, P.D.
Pouquet, A.
author_sort Mininni, P.D.
title Rotating helical turbulence. I. Global evolution and spectral behavior
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
publishDate 2010
url http://hdl.handle.net/20.500.12110/paper_10706631_v22_n3_p5_Mininni
work_keys_str_mv AT mininnipd rotatinghelicalturbulenceiglobalevolutionandspectralbehavior
AT pouqueta rotatinghelicalturbulenceiglobalevolutionandspectralbehavior
_version_ 1769810190804189184

Ejemplares similares