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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/71614
Ver los metadatos del registro completo
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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 |
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1846082728280195072 |
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13.22299 |