Diffusion of passive scalars under stochastic convection

The diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well¿defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the...

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Detalles Bibliográficos
Autores: Careta Pons, Agustí, Sagués i Mestre, Francesc, Sancho, José M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1994
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/24895
Acceso en línea:https://hdl.handle.net/2445/24895
Access Level:acceso abierto
Palabra clave:Mecànica de fluids
Turbulència
Hidrodinàmica
Estadística
Mètode de Montecarlo
Fluid mechanics
Turbulence
Hydrodynamics
Statistics
Monte Carlo method
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spelling Diffusion of passive scalars under stochastic convectionCareta Pons, AgustíSagués i Mestre, FrancescSancho, José M.Mecànica de fluidsTurbulènciaHidrodinàmicaEstadísticaMètode de MontecarloFluid mechanicsTurbulenceHydrodynamicsStatisticsMonte Carlo methodThe diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well¿defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the basic hypothesis involved refers to a rapidly decaying turbulence. These predictions are favorable compared with direct computer simulations of stochastic differential equations containing multiplicative space¿time correlated noise.American Institute of Physics1994info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/24895Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1063/1.868089Physics of Fluids, 1994, vol. 6, num. 1, p. 349-355http://dx.doi.org/10.1063/1.868089(c) American Institute of Physics, 1994info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/248952026-05-27T06:46:51Z
dc.title.none.fl_str_mv Diffusion of passive scalars under stochastic convection
title Diffusion of passive scalars under stochastic convection
spellingShingle Diffusion of passive scalars under stochastic convection
Careta Pons, Agustí
Mecànica de fluids
Turbulència
Hidrodinàmica
Estadística
Mètode de Montecarlo
Fluid mechanics
Turbulence
Hydrodynamics
Statistics
Monte Carlo method
title_short Diffusion of passive scalars under stochastic convection
title_full Diffusion of passive scalars under stochastic convection
title_fullStr Diffusion of passive scalars under stochastic convection
title_full_unstemmed Diffusion of passive scalars under stochastic convection
title_sort Diffusion of passive scalars under stochastic convection
dc.creator.none.fl_str_mv Careta Pons, Agustí
Sagués i Mestre, Francesc
Sancho, José M.
author Careta Pons, Agustí
author_facet Careta Pons, Agustí
Sagués i Mestre, Francesc
Sancho, José M.
author_role author
author2 Sagués i Mestre, Francesc
Sancho, José M.
author2_role author
author
dc.subject.none.fl_str_mv Mecànica de fluids
Turbulència
Hidrodinàmica
Estadística
Mètode de Montecarlo
Fluid mechanics
Turbulence
Hydrodynamics
Statistics
Monte Carlo method
topic Mecànica de fluids
Turbulència
Hidrodinàmica
Estadística
Mètode de Montecarlo
Fluid mechanics
Turbulence
Hydrodynamics
Statistics
Monte Carlo method
description The diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well¿defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the basic hypothesis involved refers to a rapidly decaying turbulence. These predictions are favorable compared with direct computer simulations of stochastic differential equations containing multiplicative space¿time correlated noise.
publishDate 1994
dc.date.none.fl_str_mv 1994
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/24895
url https://hdl.handle.net/2445/24895
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1063/1.868089
Physics of Fluids, 1994, vol. 6, num. 1, p. 349-355
http://dx.doi.org/10.1063/1.868089
dc.rights.none.fl_str_mv (c) American Institute of Physics, 1994
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Institute of Physics, 1994
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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