Passive scalar cascades in rotating helical and non-helical flows

We study how helicity affects the spectrum of a passive scalar in rotating turbulent flows, using numerical simulations of turbulent flows with or without rotation and with or without injection of helicity. Scaling laws for energy and passive scalar spectra in the direction perpendicular to the rota...

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Detalles Bibliográficos
Autor principal: Mininni, Pablo Daniel
Publicado: 2013
Materias:
Energy spectra
Helical flows
Helicities
Passive scalars
Phenomenological models
Rotation axis
Phenomenological modeling
Molecular physics
Physics
Mixing
Shock tubes
Turbulent flow
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318949_v88_nT155_p_RodriguezImazio
http://hdl.handle.net/20.500.12110/paper_00318949_v88_nT155_p_RodriguezImazio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00318949_v88_nT155_p_RodriguezImazio
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spelling paper:paper_00318949_v88_nT155_p_RodriguezImazio2023-06-08T14:57:40Z Passive scalar cascades in rotating helical and non-helical flows Mininni, Pablo Daniel Energy spectra Helical flows Helicities Passive scalars Phenomenological models Rotation axis Phenomenological modeling Molecular physics Physics Mixing Shock tubes Turbulent flow We study how helicity affects the spectrum of a passive scalar in rotating turbulent flows, using numerical simulations of turbulent flows with or without rotation and with or without injection of helicity. Scaling laws for energy and passive scalar spectra in the direction perpendicular to the rotation axis differ in rotating helical flows from those found in the non-helical case, with the spectrum of passive scalar variance in the former case being shallower than in the latter. A simple phenomenological model that links the effects of helicity on the energy spectrum with the passive scalar spectrum is presented. © 2013 The Royal Swedish Academy of Sciences. Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318949_v88_nT155_p_RodriguezImazio http://hdl.handle.net/20.500.12110/paper_00318949_v88_nT155_p_RodriguezImazio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Energy spectra
Helical flows
Helicities
Passive scalars
Phenomenological models
Rotation axis
Phenomenological modeling
Molecular physics
Physics
Mixing
Shock tubes
Turbulent flow
spellingShingle Energy spectra
Helical flows
Helicities
Passive scalars
Phenomenological models
Rotation axis
Phenomenological modeling
Molecular physics
Physics
Mixing
Shock tubes
Turbulent flow
Mininni, Pablo Daniel
Passive scalar cascades in rotating helical and non-helical flows
topic_facet Energy spectra
Helical flows
Helicities
Passive scalars
Phenomenological models
Rotation axis
Phenomenological modeling
Molecular physics
Physics
Mixing
Shock tubes
Turbulent flow
description We study how helicity affects the spectrum of a passive scalar in rotating turbulent flows, using numerical simulations of turbulent flows with or without rotation and with or without injection of helicity. Scaling laws for energy and passive scalar spectra in the direction perpendicular to the rotation axis differ in rotating helical flows from those found in the non-helical case, with the spectrum of passive scalar variance in the former case being shallower than in the latter. A simple phenomenological model that links the effects of helicity on the energy spectrum with the passive scalar spectrum is presented. © 2013 The Royal Swedish Academy of Sciences.
author Mininni, Pablo Daniel
author_facet Mininni, Pablo Daniel
author_sort Mininni, Pablo Daniel
title Passive scalar cascades in rotating helical and non-helical flows
title_short Passive scalar cascades in rotating helical and non-helical flows
title_full Passive scalar cascades in rotating helical and non-helical flows
title_fullStr Passive scalar cascades in rotating helical and non-helical flows
title_full_unstemmed Passive scalar cascades in rotating helical and non-helical flows
title_sort passive scalar cascades in rotating helical and non-helical flows
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318949_v88_nT155_p_RodriguezImazio
http://hdl.handle.net/20.500.12110/paper_00318949_v88_nT155_p_RodriguezImazio
work_keys_str_mv AT mininnipablodaniel passivescalarcascadesinrotatinghelicalandnonhelicalflows
_version_ 1768546386370887680

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