Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity

Autores
Silin, Nicolas; Dari, Enzo Alberto; Córdoba, Paola A.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a numerical and experimental study of laminar natural convection flow in a fluid filled cubical cavity. The fluid is a dielectric oil used for cooling distribution and power transformers. As most liquids, this oil exhibits temperature-dependent viscosity. The cubical cavity of interest has an imposed temperature difference between two opposite vertical walls while the other walls are insulated. The cavity dimensions are 0.1 m × 0.1 m × 0.1 m. Four characteristic Rayleigh numbers ranging from 1.7 × 108 to 6.3 × 108 were analyzed. The numerical study was carried out by applying the Finite Element Method to solve the 3D Navier?Stokes and heat equations using the in-house developed Par-GPFEP code. The influence of temperature-dependent viscosity on the total transferred heat and on the flow pattern, have been evaluated. Although there are several studies regarding the flow in a square cavity in this configuration, there is limited information in the literature on the 3D flow in cubical cavities with variable properties of the working fluid. We could not find in the open literature experimental measurements that we could use to validate our numerical results. For this reason an experimental setup was developed. The velocity field was visualized and measured by Particle Image Velocimetry (PIV). The temperature profiles in the vertical mid-axis at mid-plane of the cavity were measured and compared with the numerical results. We found reasonable agreement between numerical simulations and experimental measurements.
Fil: Silin, Nicolas. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Materiales Nucleares; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Dari, Enzo Alberto. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Mecanica Computacional; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Córdoba, Paola A.. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Mecanica Computacional; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
Materia
Natural Convection
Cubical Cavity
Temperature-Dependent Viscosity
Finite Element Method
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:11336/2702
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/2702
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscositySilin, NicolasDari, Enzo AlbertoCórdoba, Paola A.Natural ConvectionCubical CavityTemperature-Dependent ViscosityFinite Element Methodhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2We present a numerical and experimental study of laminar natural convection flow in a fluid filled cubical cavity. The fluid is a dielectric oil used for cooling distribution and power transformers. As most liquids, this oil exhibits temperature-dependent viscosity. The cubical cavity of interest has an imposed temperature difference between two opposite vertical walls while the other walls are insulated. The cavity dimensions are 0.1 m × 0.1 m × 0.1 m. Four characteristic Rayleigh numbers ranging from 1.7 × 10<sup>8</sup> to 6.3 × 10<sup>8</sup> were analyzed. The numerical study was carried out by applying the Finite Element Method to solve the 3D Navier?Stokes and heat equations using the in-house developed Par-GPFEP code. The influence of temperature-dependent viscosity on the total transferred heat and on the flow pattern, have been evaluated. Although there are several studies regarding the flow in a square cavity in this configuration, there is limited information in the literature on the 3D flow in cubical cavities with variable properties of the working fluid. We could not find in the open literature experimental measurements that we could use to validate our numerical results. For this reason an experimental setup was developed. The velocity field was visualized and measured by Particle Image Velocimetry (PIV). The temperature profiles in the vertical mid-axis at mid-plane of the cavity were measured and compared with the numerical results. We found reasonable agreement between numerical simulations and experimental measurements.Fil: Silin, Nicolas. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Materiales Nucleares; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Dari, Enzo Alberto. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Mecanica Computacional; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Córdoba, Paola A.. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Mecanica Computacional; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; ArgentinaElsevier France-editions Scientifiques Medicales Elsevier2015-08-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2702Silin, Nicolas; Dari, Enzo Alberto; Córdoba, Paola A.; Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity; Elsevier France-editions Scientifiques Medicales Elsevier; International Journal Of Thermal Sciences; 98; 11-8-2015; 255-2651290-0729enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1290072915002033info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:19:21Zoai:ri.conicet.gov.ar:11336/2702instacron: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:34982025-10-22 11:19:21.462CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
title Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
spellingShingle Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
Silin, Nicolas
Natural Convection
Cubical Cavity
Temperature-Dependent Viscosity
Finite Element Method
title_short Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
title_full Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
title_fullStr Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
title_full_unstemmed Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
title_sort Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity
dc.creator.none.fl_str_mv Silin, Nicolas
Dari, Enzo Alberto
Córdoba, Paola A.
author Silin, Nicolas
author_facet Silin, Nicolas
Dari, Enzo Alberto
Córdoba, Paola A.
author_role author
author2 Dari, Enzo Alberto
Córdoba, Paola A.
author2_role author
author
dc.subject.none.fl_str_mv Natural Convection
Cubical Cavity
Temperature-Dependent Viscosity
Finite Element Method
topic Natural Convection
Cubical Cavity
Temperature-Dependent Viscosity
Finite Element Method
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv We present a numerical and experimental study of laminar natural convection flow in a fluid filled cubical cavity. The fluid is a dielectric oil used for cooling distribution and power transformers. As most liquids, this oil exhibits temperature-dependent viscosity. The cubical cavity of interest has an imposed temperature difference between two opposite vertical walls while the other walls are insulated. The cavity dimensions are 0.1 m × 0.1 m × 0.1 m. Four characteristic Rayleigh numbers ranging from 1.7 × 10<sup>8</sup> to 6.3 × 10<sup>8</sup> were analyzed. The numerical study was carried out by applying the Finite Element Method to solve the 3D Navier?Stokes and heat equations using the in-house developed Par-GPFEP code. The influence of temperature-dependent viscosity on the total transferred heat and on the flow pattern, have been evaluated. Although there are several studies regarding the flow in a square cavity in this configuration, there is limited information in the literature on the 3D flow in cubical cavities with variable properties of the working fluid. We could not find in the open literature experimental measurements that we could use to validate our numerical results. For this reason an experimental setup was developed. The velocity field was visualized and measured by Particle Image Velocimetry (PIV). The temperature profiles in the vertical mid-axis at mid-plane of the cavity were measured and compared with the numerical results. We found reasonable agreement between numerical simulations and experimental measurements.
Fil: Silin, Nicolas. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Materiales Nucleares; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Dari, Enzo Alberto. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Mecanica Computacional; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Córdoba, Paola A.. Comision Nacional de Energia Atomica. Gerencia de Area de Aplicaciones de la Tecnologia Nuclear. Gerencia de Investigacion Aplicada. Grupo de Mecanica Computacional; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina
description We present a numerical and experimental study of laminar natural convection flow in a fluid filled cubical cavity. The fluid is a dielectric oil used for cooling distribution and power transformers. As most liquids, this oil exhibits temperature-dependent viscosity. The cubical cavity of interest has an imposed temperature difference between two opposite vertical walls while the other walls are insulated. The cavity dimensions are 0.1 m × 0.1 m × 0.1 m. Four characteristic Rayleigh numbers ranging from 1.7 × 10<sup>8</sup> to 6.3 × 10<sup>8</sup> were analyzed. The numerical study was carried out by applying the Finite Element Method to solve the 3D Navier?Stokes and heat equations using the in-house developed Par-GPFEP code. The influence of temperature-dependent viscosity on the total transferred heat and on the flow pattern, have been evaluated. Although there are several studies regarding the flow in a square cavity in this configuration, there is limited information in the literature on the 3D flow in cubical cavities with variable properties of the working fluid. We could not find in the open literature experimental measurements that we could use to validate our numerical results. For this reason an experimental setup was developed. The velocity field was visualized and measured by Particle Image Velocimetry (PIV). The temperature profiles in the vertical mid-axis at mid-plane of the cavity were measured and compared with the numerical results. We found reasonable agreement between numerical simulations and experimental measurements.
publishDate 2015
dc.date.none.fl_str_mv 2015-08-11
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/11336/2702
Silin, Nicolas; Dari, Enzo Alberto; Córdoba, Paola A.; Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity; Elsevier France-editions Scientifiques Medicales Elsevier; International Journal Of Thermal Sciences; 98; 11-8-2015; 255-265
1290-0729
url http://hdl.handle.net/11336/2702
identifier_str_mv Silin, Nicolas; Dari, Enzo Alberto; Córdoba, Paola A.; Natural convection in a cubical cavity filled with a fluid showing temperature-dependent viscosity; Elsevier France-editions Scientifiques Medicales Elsevier; International Journal Of Thermal Sciences; 98; 11-8-2015; 255-265
1290-0729
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1290072915002033
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 Elsevier France-editions Scientifiques Medicales Elsevier
publisher.none.fl_str_mv Elsevier France-editions Scientifiques Medicales Elsevier
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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score 12.982451

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