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dc.contributor.authorBarletta, Antonio
dc.contributor.authorStoresletten, Leiv
dc.date.accessioned2010-12-15T14:56:37Z
dc.date.available2010-12-15T14:56:37Z
dc.date.issued2010
dc.identifier.citationBarletta, A., & Storesletten, L. (2010). Stability of Flow with Viscous Dissipation in a Horizontal Porous Layer with an Open Boundary Having a Prescribed Temperature Gradient. Transport in Porous Media, 723-741. doi: 10.1007/s11242-010-9588-6en_US
dc.identifier.issn0169-3913
dc.identifier.urihttp://hdl.handle.net/11250/138155
dc.descriptionPublished version of an article in the journal: Transport in Porous Media. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s11242-010-9588-6en_US
dc.description.abstractA buoyancy-induced stationary flow with viscous dissipation in a horizontal porous layer is investigated. The lower boundary surface is impermeable and subject to a uniform heat flux. The upper open boundary has a prescribed, linearly varying, temperature distribution. The buoyancy-induced basic velocity profile is parallel and non-uniform. The linear stability of this basic solution is analysed numerically by solving the disturbance equations for oblique rolls arbitrarily oriented with respect to the basic velocity field. The onset conditions of thermal instability are governed by the Rayleigh number associated with the prescribed wall heat flux at the lower boundary, by the horizontal Rayleigh number associated with the imposed temperature gradient on the upper open boundary, and by the Gebhart number associated with the effect of viscous dissipation. The critical value of the Rayleigh number for the onset of the thermal instability is evaluated as a function of the horizontal Rayleigh number and of the Gebhart number. It is shown that the longitudinal rolls, having axis parallel to the basic velocity, are the most unstable in all the cases examined. Moreover, the imposed horizontal temperature gradient tends to stabilise the basic flow, while the viscous dissipation turns out to have a destabilising effect. © 2010 Springer Science+Business Media B.V.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.titleStability of Flow with Viscous Dissipation in a Horizontal Porous Layer with an Open Boundary Having a Prescribed Temperature Gradienten_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.subject.nsiVDP::Mathematics and natural science: 400::Mathematics: 410::Applied mathematics: 413en_US
dc.subject.nsiVDP::Technology: 500::Materials science and engineering: 520en_US
dc.source.pagenumber723-741en_US


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