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Article: Transient buoyancy-driven convection of water around 4°C in a porous cavity with internal heat generation

TitleTransient buoyancy-driven convection of water around 4°C in a porous cavity with internal heat generation
Authors
Issue Date2008
PublisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phf
Citation
Physics of Fluids, 2008, v. 20 n. 8, 087104 How to Cite?
AbstractThe transient buoyancy-driven convection in a water saturated porous cavity with internal heat generation is studied numerically. The Brinkman-Forchheimer-extended Darcy model is employed to investigate the average heat transfer rate and to study the effects of density maximum, the Grashof number, porosity, the Darcy number, and the internal heat generation parameter on buoyancy-induced flow and heat transfer. The finite volume method with the power law scheme for convection terms is used to discretize the governing equations for momentum and energy, which are solved by the Gauss-Seidel and successive-over-relaxation methods. A systematic investigation on transient, steady fluid flow, and heat transfer phenomena under different physical conditions is carried out. The results obtained in the steady state regime are presented in the form of streamlines, isotherms, and midheight velocity profiles for various values of Grashof number, porosity, and Darcy number. It is found that the effect of density maximum is to slow down the buoyancy-driven convection and reduce the average heat transfer. The strength of convection and the heat transfer rate become weak due to more flow restriction in the porous medium for small porosity and high internal heat generation parameter. © 2008 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/156978
ISSN
2015 Impact Factor: 2.017
2015 SCImago Journal Rankings: 1.036
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKandaswamy, Pen_US
dc.contributor.authorEswaramurthi, Men_US
dc.contributor.authorNg, COen_US
dc.date.accessioned2012-08-08T08:44:47Z-
dc.date.available2012-08-08T08:44:47Z-
dc.date.issued2008en_US
dc.identifier.citationPhysics of Fluids, 2008, v. 20 n. 8, 087104en_US
dc.identifier.issn1070-6631en_US
dc.identifier.urihttp://hdl.handle.net/10722/156978-
dc.description.abstractThe transient buoyancy-driven convection in a water saturated porous cavity with internal heat generation is studied numerically. The Brinkman-Forchheimer-extended Darcy model is employed to investigate the average heat transfer rate and to study the effects of density maximum, the Grashof number, porosity, the Darcy number, and the internal heat generation parameter on buoyancy-induced flow and heat transfer. The finite volume method with the power law scheme for convection terms is used to discretize the governing equations for momentum and energy, which are solved by the Gauss-Seidel and successive-over-relaxation methods. A systematic investigation on transient, steady fluid flow, and heat transfer phenomena under different physical conditions is carried out. The results obtained in the steady state regime are presented in the form of streamlines, isotherms, and midheight velocity profiles for various values of Grashof number, porosity, and Darcy number. It is found that the effect of density maximum is to slow down the buoyancy-driven convection and reduce the average heat transfer. The strength of convection and the heat transfer rate become weak due to more flow restriction in the porous medium for small porosity and high internal heat generation parameter. © 2008 American Institute of Physics.en_US
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phfen_US
dc.relation.ispartofPhysics of Fluidsen_US
dc.rightsPhysics of Fluids. Copyright © American Institute of Physics.-
dc.titleTransient buoyancy-driven convection of water around 4°C in a porous cavity with internal heat generationen_US
dc.typeArticleen_US
dc.identifier.emailNg, CO: cong@hku.hken_US
dc.identifier.authorityNg, CO=rp00224en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1063/1.2974805en_US
dc.identifier.scopuseid_2-s2.0-51249088554en_US
dc.identifier.hkuros149742-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-51249088554&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume20en_US
dc.identifier.issue8en_US
dc.identifier.isiWOS:000259449000036-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridKandaswamy, P=6603739083en_US
dc.identifier.scopusauthoridEswaramurthi, M=23666748600en_US
dc.identifier.scopusauthoridNg, CO=7401705594en_US

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