Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium

Detalhes bibliográficos
Autor(a) principal: Lisboa, Kleber Marques
Data de Publicação: 2018
Outros Autores: Su, Jian, Cotta, Renato Machado
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRJ
Texto Completo: http://hdl.handle.net/11422/8295
Resumo: An analysis of natural convection within a rectangular cavity partially filled with a heat-generating porous medium is carried out through the Generalized Integral Transform Technique (GITT), in which the laminar flow and energy equations are solved with automatic error control. A single domain reformulation strategy is adopted to rewrite the governing equations within the fluid and the porous medium as a single heterogeneous medium formulation, with spatially variable physical properties and source terms that account for the abrupt transition of the two regions. This fundamental study is motivated by the analysis of wet storage of spent nuclear fuel elements with passive cooling of the pool and physical conclusions are drawn from the hybrid numerical-analytical solution. Increases in the Rayleigh number with constant internal heat generation are found to lower the maximum temperature within the cavity. Moreover, decreasing the aspect ratio also has positive effects on the cooling of the cavity.
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spelling Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous mediumHeat flowFluid flowMathematical modelingDarcy modelNavier–Stokes equationsCNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOSAn analysis of natural convection within a rectangular cavity partially filled with a heat-generating porous medium is carried out through the Generalized Integral Transform Technique (GITT), in which the laminar flow and energy equations are solved with automatic error control. A single domain reformulation strategy is adopted to rewrite the governing equations within the fluid and the porous medium as a single heterogeneous medium formulation, with spatially variable physical properties and source terms that account for the abrupt transition of the two regions. This fundamental study is motivated by the analysis of wet storage of spent nuclear fuel elements with passive cooling of the pool and physical conclusions are drawn from the hybrid numerical-analytical solution. Increases in the Rayleigh number with constant internal heat generation are found to lower the maximum temperature within the cavity. Moreover, decreasing the aspect ratio also has positive effects on the cooling of the cavity.Indisponível.Taylor & FrancisBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos2019-06-05T00:27:18Z2023-12-21T03:05:56Z2018-10-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1521-0634http://hdl.handle.net/11422/829510.1080/10407782.2018.1511141engNumerical Heat Transfer, Part A ApplicationsLisboa, Kleber MarquesSu, JianCotta, Renato Machadoinfo:eu-repo/semantics/embargoedAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJ2023-12-21T03:05:56Zoai:pantheon.ufrj.br:11422/8295Repositório InstitucionalPUBhttp://www.pantheon.ufrj.br/oai/requestpantheon@sibi.ufrj.bropendoar:2023-12-21T03:05:56Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
title Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
spellingShingle Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
Lisboa, Kleber Marques
Heat flow
Fluid flow
Mathematical modeling
Darcy model
Navier–Stokes equations
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
title_short Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
title_full Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
title_fullStr Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
title_full_unstemmed Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
title_sort Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
author Lisboa, Kleber Marques
author_facet Lisboa, Kleber Marques
Su, Jian
Cotta, Renato Machado
author_role author
author2 Su, Jian
Cotta, Renato Machado
author2_role author
author
dc.contributor.author.fl_str_mv Lisboa, Kleber Marques
Su, Jian
Cotta, Renato Machado
dc.subject.por.fl_str_mv Heat flow
Fluid flow
Mathematical modeling
Darcy model
Navier–Stokes equations
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
topic Heat flow
Fluid flow
Mathematical modeling
Darcy model
Navier–Stokes equations
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
description An analysis of natural convection within a rectangular cavity partially filled with a heat-generating porous medium is carried out through the Generalized Integral Transform Technique (GITT), in which the laminar flow and energy equations are solved with automatic error control. A single domain reformulation strategy is adopted to rewrite the governing equations within the fluid and the porous medium as a single heterogeneous medium formulation, with spatially variable physical properties and source terms that account for the abrupt transition of the two regions. This fundamental study is motivated by the analysis of wet storage of spent nuclear fuel elements with passive cooling of the pool and physical conclusions are drawn from the hybrid numerical-analytical solution. Increases in the Rayleigh number with constant internal heat generation are found to lower the maximum temperature within the cavity. Moreover, decreasing the aspect ratio also has positive effects on the cooling of the cavity.
publishDate 2018
dc.date.none.fl_str_mv 2018-10-08
2019-06-05T00:27:18Z
2023-12-21T03:05:56Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv 1521-0634
http://hdl.handle.net/11422/8295
10.1080/10407782.2018.1511141
identifier_str_mv 1521-0634
10.1080/10407782.2018.1511141
url http://hdl.handle.net/11422/8295
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Numerical Heat Transfer, Part A Applications
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.publisher.none.fl_str_mv Taylor & Francis
Brasil
Núcleo Interdisciplinar de Dinâmica dos Fluidos
publisher.none.fl_str_mv Taylor & Francis
Brasil
Núcleo Interdisciplinar de Dinâmica dos Fluidos
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRJ
instname:Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
instname_str Universidade Federal do Rio de Janeiro (UFRJ)
instacron_str UFRJ
institution UFRJ
reponame_str Repositório Institucional da UFRJ
collection Repositório Institucional da UFRJ
repository.name.fl_str_mv Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)
repository.mail.fl_str_mv pantheon@sibi.ufrj.br
_version_ 1815455990308405248

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