Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence

Autores
Dmitruk, Pablo Ariel; Matthaeus, W.H.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigate the occurrence of 1f spectra of low-frequency fluctuations in numerical simulations of three-dimensional hydrodynamic and magnetohydrodynamic turbulence driven by a random forcing with a controlled correlation time. A range of one decade of 1f spectrum is observed when a strong background magnetic field is present. The frequency spectra of individual Fourier modes is also analyzed and it is observed that the 1f range is present in the largest available wavelength mode for the magnetohydrodynamic simulations with and without a background magnetic field and it is not observed (or is less clear) for the hydrodynamic case. The presence of 1f spectra of low-frequency fluctuations is also analyzed for two-dimensional magnetohydrodynamic and hydrodynamic turbulence simulations and it is observed in both cases. The origin of these long period fluctuations is discussed. © 2007 The American Physical Society.
Fil: Dmitruk, Pablo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Matthaeus, W.H.. Bartol Research Institute; Reino Unido
Materia
Magnetohydrodynamic
Hydrodynamic
Turbulence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/71614
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulenceDmitruk, Pablo ArielMatthaeus, W.H.MagnetohydrodynamicHydrodynamicTurbulencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We investigate the occurrence of 1f spectra of low-frequency fluctuations in numerical simulations of three-dimensional hydrodynamic and magnetohydrodynamic turbulence driven by a random forcing with a controlled correlation time. A range of one decade of 1f spectrum is observed when a strong background magnetic field is present. The frequency spectra of individual Fourier modes is also analyzed and it is observed that the 1f range is present in the largest available wavelength mode for the magnetohydrodynamic simulations with and without a background magnetic field and it is not observed (or is less clear) for the hydrodynamic case. The presence of 1f spectra of low-frequency fluctuations is also analyzed for two-dimensional magnetohydrodynamic and hydrodynamic turbulence simulations and it is observed in both cases. The origin of these long period fluctuations is discussed. © 2007 The American Physical Society.Fil: Dmitruk, Pablo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Matthaeus, W.H.. Bartol Research Institute; Reino UnidoAmerican Physical Society2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71614Dmitruk, Pablo Ariel; Matthaeus, W.H.; Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 76; 3; 12-2007; 363051-3630581539-3755CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.76.036305info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:27:21Zoai:ri.conicet.gov.ar:11336/71614instacron: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:34982025-10-15 14:27:22.075CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
title Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
spellingShingle Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
Dmitruk, Pablo Ariel
Magnetohydrodynamic
Hydrodynamic
Turbulence
title_short Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
title_full Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
title_fullStr Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
title_full_unstemmed Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
title_sort Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence
dc.creator.none.fl_str_mv Dmitruk, Pablo Ariel
Matthaeus, W.H.
author Dmitruk, Pablo Ariel
author_facet Dmitruk, Pablo Ariel
Matthaeus, W.H.
author_role author
author2 Matthaeus, W.H.
author2_role author
dc.subject.none.fl_str_mv Magnetohydrodynamic
Hydrodynamic
Turbulence
topic Magnetohydrodynamic
Hydrodynamic
Turbulence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We investigate the occurrence of 1f spectra of low-frequency fluctuations in numerical simulations of three-dimensional hydrodynamic and magnetohydrodynamic turbulence driven by a random forcing with a controlled correlation time. A range of one decade of 1f spectrum is observed when a strong background magnetic field is present. The frequency spectra of individual Fourier modes is also analyzed and it is observed that the 1f range is present in the largest available wavelength mode for the magnetohydrodynamic simulations with and without a background magnetic field and it is not observed (or is less clear) for the hydrodynamic case. The presence of 1f spectra of low-frequency fluctuations is also analyzed for two-dimensional magnetohydrodynamic and hydrodynamic turbulence simulations and it is observed in both cases. The origin of these long period fluctuations is discussed. © 2007 The American Physical Society.
Fil: Dmitruk, Pablo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Matthaeus, W.H.. Bartol Research Institute; Reino Unido
description We investigate the occurrence of 1f spectra of low-frequency fluctuations in numerical simulations of three-dimensional hydrodynamic and magnetohydrodynamic turbulence driven by a random forcing with a controlled correlation time. A range of one decade of 1f spectrum is observed when a strong background magnetic field is present. The frequency spectra of individual Fourier modes is also analyzed and it is observed that the 1f range is present in the largest available wavelength mode for the magnetohydrodynamic simulations with and without a background magnetic field and it is not observed (or is less clear) for the hydrodynamic case. The presence of 1f spectra of low-frequency fluctuations is also analyzed for two-dimensional magnetohydrodynamic and hydrodynamic turbulence simulations and it is observed in both cases. The origin of these long period fluctuations is discussed. © 2007 The American Physical Society.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
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/11336/71614
Dmitruk, Pablo Ariel; Matthaeus, W.H.; Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 76; 3; 12-2007; 363051-363058
1539-3755
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71614
identifier_str_mv Dmitruk, Pablo Ariel; Matthaeus, W.H.; Low-frequency 1f fluctuations in hydrodynamic and magnetohydrodynamic turbulence; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 76; 3; 12-2007; 363051-363058
1539-3755
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.76.036305
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 American Physical Society
publisher.none.fl_str_mv American Physical Society
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_ 1846082728280195072
score 13.22299

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