Patterns and long range correlations in idealized granular flows

An initially homogeneous freely evolving fluid of inelastic hard spheres develops inhomogeneities in the dow field u(r, t) (vortices) and in the density held n(r, t) (clusters), driven by unstable fluctuations, delta a = {delta n, delta u}. Their spatial correlations, (delta a(r, t)delta a(r',...

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Detalles Bibliográficos
Autores: García Orza, José Antonio, Van Noije, T. P. C., Ernst, M. H., Brito López, Ricardo
Tipo de recurso: artículo
Fecha de publicación:1997
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/58515
Acceso en línea:https://hdl.handle.net/20.500.14352/58515
Access Level:acceso abierto
Palabra clave:536
Gas
Termodinámica
2213 Termodinámica
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spelling Patterns and long range correlations in idealized granular flowsGarcía Orza, José AntonioVan Noije, T. P. C.Ernst, M. H.Brito López, Ricardo536GasTermodinámica2213 TermodinámicaAn initially homogeneous freely evolving fluid of inelastic hard spheres develops inhomogeneities in the dow field u(r, t) (vortices) and in the density held n(r, t) (clusters), driven by unstable fluctuations, delta a = {delta n, delta u}. Their spatial correlations, (delta a(r, t)delta a(r', t)], as measured in molecular dynamics simulations, exhibit long range correlations; the mean vortex diameter grows as xi(t) proportional to root ln t; there occur transitions to macroscopic shearing states, etc. The Cahn-Hilliard theory of spinodal decomposition offers a qualitative understanding and quantitative estimates of the observed phenomena. When intrinsic length scales are of the order of the system size, effects of physical boundaries and periodic boundaries (finite size effects in simulations) are important.Universidad Complutense de Madrid19971997-08-0119971997-08-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/58515reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/585152026-06-02T12:44:21Z
dc.title.none.fl_str_mv Patterns and long range correlations in idealized granular flows
title Patterns and long range correlations in idealized granular flows
spellingShingle Patterns and long range correlations in idealized granular flows
García Orza, José Antonio
536
Gas
Termodinámica
2213 Termodinámica
title_short Patterns and long range correlations in idealized granular flows
title_full Patterns and long range correlations in idealized granular flows
title_fullStr Patterns and long range correlations in idealized granular flows
title_full_unstemmed Patterns and long range correlations in idealized granular flows
title_sort Patterns and long range correlations in idealized granular flows
dc.creator.none.fl_str_mv García Orza, José Antonio
Van Noije, T. P. C.
Ernst, M. H.
Brito López, Ricardo
author García Orza, José Antonio
author_facet García Orza, José Antonio
Van Noije, T. P. C.
Ernst, M. H.
Brito López, Ricardo
author_role author
author2 Van Noije, T. P. C.
Ernst, M. H.
Brito López, Ricardo
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 536
Gas
Termodinámica
2213 Termodinámica
topic 536
Gas
Termodinámica
2213 Termodinámica
description An initially homogeneous freely evolving fluid of inelastic hard spheres develops inhomogeneities in the dow field u(r, t) (vortices) and in the density held n(r, t) (clusters), driven by unstable fluctuations, delta a = {delta n, delta u}. Their spatial correlations, (delta a(r, t)delta a(r', t)], as measured in molecular dynamics simulations, exhibit long range correlations; the mean vortex diameter grows as xi(t) proportional to root ln t; there occur transitions to macroscopic shearing states, etc. The Cahn-Hilliard theory of spinodal decomposition offers a qualitative understanding and quantitative estimates of the observed phenomena. When intrinsic length scales are of the order of the system size, effects of physical boundaries and periodic boundaries (finite size effects in simulations) are important.
publishDate 1997
dc.date.none.fl_str_mv 1997
1997-08-01
1997
1997-08-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/58515
url https://hdl.handle.net/20.500.14352/58515
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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