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Article: Ferromagnetic Convection in a Heterogeneous Darcy Porous Medium Using a Local Thermal Non-equilibrium (LTNE) Model

TitleFerromagnetic Convection in a Heterogeneous Darcy Porous Medium Using a Local Thermal Non-equilibrium (LTNE) Model
Authors
KeywordsFerromagnetic convection
Heterogeneous porous medium
Local thermal non-equilibrium
Issue Date2011
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0169-3913
Citation
Transport In Porous Media, 2011, v. 90 n. 2, p. 529-544 How to Cite?
AbstractThe combined effects of vertical heterogeneity of permeability and local thermal non-equilibrium (LTNE) on the onset of ferromagnetic convection in a ferrofluid saturated Darcy porous medium in the presence of a uniform vertical magnetic field are investigated. A two-field model for temperature representing the solid and fluid phases separately is used. The eigenvalue problem is solved numerically using the Galerkin method for different forms of permeability heterogeneity function Γ(z) and their effect on the stability characteristics of the system has been analyzed in detail. It is observed that the general quadratic variation of Γ(z) with depth has more destabilizing effect on the system when compared to the homogeneous porous medium case. Besides, the influence of LTNE and magnetic parameters on the criterion for the onset of ferromagnetic convection is also assessed. © 2011 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/144879
ISSN
2015 Impact Factor: 1.653
2015 SCImago Journal Rankings: 0.759
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaHKU 715609E
HKU 715510E
Funding Information:

One of the authors (ISS) wishes to thank the University of Hong Kong for inviting him as a visiting Professor and also the Bangalore University for sanctioning sabbatical leave. The work was financially supported by the Research Grants Council of the Hong Kong Special Administrative Region, China, through Project Nos. HKU 715609E and HKU 715510E. We thank the reviewers for useful suggestions.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorShivakumara, ISen_HK
dc.contributor.authorNg, COen_HK
dc.contributor.authorRavisha, Men_HK
dc.date.accessioned2012-02-21T05:43:47Z-
dc.date.available2012-02-21T05:43:47Z-
dc.date.issued2011en_HK
dc.identifier.citationTransport In Porous Media, 2011, v. 90 n. 2, p. 529-544en_HK
dc.identifier.issn0169-3913en_HK
dc.identifier.urihttp://hdl.handle.net/10722/144879-
dc.description.abstractThe combined effects of vertical heterogeneity of permeability and local thermal non-equilibrium (LTNE) on the onset of ferromagnetic convection in a ferrofluid saturated Darcy porous medium in the presence of a uniform vertical magnetic field are investigated. A two-field model for temperature representing the solid and fluid phases separately is used. The eigenvalue problem is solved numerically using the Galerkin method for different forms of permeability heterogeneity function Γ(z) and their effect on the stability characteristics of the system has been analyzed in detail. It is observed that the general quadratic variation of Γ(z) with depth has more destabilizing effect on the system when compared to the homogeneous porous medium case. Besides, the influence of LTNE and magnetic parameters on the criterion for the onset of ferromagnetic convection is also assessed. © 2011 The Author(s).en_HK
dc.languageengen_US
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0169-3913en_HK
dc.relation.ispartofTransport in Porous Mediaen_HK
dc.rightsThe Author(s)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectFerromagnetic convectionen_HK
dc.subjectHeterogeneous porous mediumen_HK
dc.subjectLocal thermal non-equilibriumen_HK
dc.titleFerromagnetic Convection in a Heterogeneous Darcy Porous Medium Using a Local Thermal Non-equilibrium (LTNE) Modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4551/resserv?sid=springerlink&genre=article&atitle=Ferromagnetic Convection in a Heterogeneous Darcy Porous Medium Using a Local Thermal Non-equilibrium (LTNE) Model&title=Transport in Porous Media&issn=01693913&date=2011-11-01&volume=90&issue=2& spage=529&authors=I. S. Shivakumara, Chiu-On Ng, M. Ravishaen_US
dc.identifier.emailNg, CO:cong@hku.hken_HK
dc.identifier.authorityNg, CO=rp00224en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1007/s11242-011-9798-6en_HK
dc.identifier.scopuseid_2-s2.0-80053987408en_HK
dc.identifier.hkuros197638-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053987408&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume90en_HK
dc.identifier.issue2en_HK
dc.identifier.spage529en_HK
dc.identifier.epage544en_HK
dc.identifier.eissn1573-1634en_US
dc.identifier.isiWOS:000297121200012-
dc.publisher.placeNetherlandsen_HK
dc.description.otherSpringer Open Choice, 21 Feb 2012en_US
dc.relation.projectElectrohydrodynamic slip flow through a channel with micropatterned surfaces-
dc.relation.projectA homogenization-based model for roughness-induced apparent slip-
dc.identifier.scopusauthoridShivakumara, IS=6603560855en_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK
dc.identifier.scopusauthoridRavisha, M=35345478700en_HK
dc.identifier.citeulike9527844-

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