Understanding turbulence through numerical simulations

Autores
Gomez, Daniel Osvaldo; Mininni, Pablo Daniel
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Turbulence is one of the important problems in classical physics that still remain unsolved. The Navier–Stokes equations have been studied for almost two centuries now, and although they seem to properly describe the dynamics of 6uids, we still do not have a clear understanding of eventhe simplest turbulent 6ows. We present numerical simulations of three dimensional, homogeneous and isotropic turbulence at moderate Reynolds numbers. We externally drive the 6uid with either helical or non-helical forces. In both cases we ;nd that the externally driven system relaxes to a stationary turbulent regime, which is compatible with the Kolmogorov spectrum Ek ≈ k−5=3 . Inthe helical case, we con;rm that the kinetic helicity also cascades directly, along with energy and displaying a Kolmogorov spectrum as well. We ;nd that the dissipation scale of both ideal invariants is also consistent with the Kolmogorov scale (i.e., k ≈ ( = 3 )1=4).
Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Mininni, Pablo Daniel. 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
Materia
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:11336/22433
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Understanding turbulence through numerical simulationsGomez, Daniel OsvaldoMininni, Pablo DanielTurbulencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Turbulence is one of the important problems in classical physics that still remain unsolved. The Navier–Stokes equations have been studied for almost two centuries now, and although they seem to properly describe the dynamics of 6uids, we still do not have a clear understanding of eventhe simplest turbulent 6ows. We present numerical simulations of three dimensional, homogeneous and isotropic turbulence at moderate Reynolds numbers. We externally drive the 6uid with either helical or non-helical forces. In both cases we ;nd that the externally driven system relaxes to a stationary turbulent regime, which is compatible with the Kolmogorov spectrum Ek ≈ k−5=3 . Inthe helical case, we con;rm that the kinetic helicity also cascades directly, along with energy and displaying a Kolmogorov spectrum as well. We ;nd that the dissipation scale of both ideal invariants is also consistent with the Kolmogorov scale (i.e., k ≈ ( = 3 )1=4).Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Mininni, Pablo Daniel. 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; ArgentinaElsevier Science2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22433Gomez, Daniel Osvaldo; Mininni, Pablo Daniel; Understanding turbulence through numerical simulations; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 342; 1-2; 12-2004; 69-750378-4371CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physa.2004.04.061info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378437104004753info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-29T12:10:18Zoai:ri.conicet.gov.ar:11336/22433instacron: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:34982025-10-29 12:10:18.346CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Understanding turbulence through numerical simulations
title Understanding turbulence through numerical simulations
spellingShingle Understanding turbulence through numerical simulations
Gomez, Daniel Osvaldo
Turbulence
title_short Understanding turbulence through numerical simulations
title_full Understanding turbulence through numerical simulations
title_fullStr Understanding turbulence through numerical simulations
title_full_unstemmed Understanding turbulence through numerical simulations
title_sort Understanding turbulence through numerical simulations
dc.creator.none.fl_str_mv Gomez, Daniel Osvaldo
Mininni, Pablo Daniel
author Gomez, Daniel Osvaldo
author_facet Gomez, Daniel Osvaldo
Mininni, Pablo Daniel
author_role author
author2 Mininni, Pablo Daniel
author2_role author
dc.subject.none.fl_str_mv Turbulence
topic 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 Turbulence is one of the important problems in classical physics that still remain unsolved. The Navier–Stokes equations have been studied for almost two centuries now, and although they seem to properly describe the dynamics of 6uids, we still do not have a clear understanding of eventhe simplest turbulent 6ows. We present numerical simulations of three dimensional, homogeneous and isotropic turbulence at moderate Reynolds numbers. We externally drive the 6uid with either helical or non-helical forces. In both cases we ;nd that the externally driven system relaxes to a stationary turbulent regime, which is compatible with the Kolmogorov spectrum Ek ≈ k−5=3 . Inthe helical case, we con;rm that the kinetic helicity also cascades directly, along with energy and displaying a Kolmogorov spectrum as well. We ;nd that the dissipation scale of both ideal invariants is also consistent with the Kolmogorov scale (i.e., k ≈ ( = 3 )1=4).
Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Mininni, Pablo Daniel. 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
description Turbulence is one of the important problems in classical physics that still remain unsolved. The Navier–Stokes equations have been studied for almost two centuries now, and although they seem to properly describe the dynamics of 6uids, we still do not have a clear understanding of eventhe simplest turbulent 6ows. We present numerical simulations of three dimensional, homogeneous and isotropic turbulence at moderate Reynolds numbers. We externally drive the 6uid with either helical or non-helical forces. In both cases we ;nd that the externally driven system relaxes to a stationary turbulent regime, which is compatible with the Kolmogorov spectrum Ek ≈ k−5=3 . Inthe helical case, we con;rm that the kinetic helicity also cascades directly, along with energy and displaying a Kolmogorov spectrum as well. We ;nd that the dissipation scale of both ideal invariants is also consistent with the Kolmogorov scale (i.e., k ≈ ( = 3 )1=4).
publishDate 2004
dc.date.none.fl_str_mv 2004-12
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/11336/22433
Gomez, Daniel Osvaldo; Mininni, Pablo Daniel; Understanding turbulence through numerical simulations; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 342; 1-2; 12-2004; 69-75
0378-4371
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22433
identifier_str_mv Gomez, Daniel Osvaldo; Mininni, Pablo Daniel; Understanding turbulence through numerical simulations; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 342; 1-2; 12-2004; 69-75
0378-4371
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physa.2004.04.061
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378437104004753
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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_ 1847426930810290176
score 13.10058

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