The effect of conducting bounding plates on the onset of Horton-Rogers-Lapwood convection

Abdelkader Mojtabi, D Andrew S Rees

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Abstract

We present an analytical and numerical stability analysis of the onset of natural convection in a horizontal fluid-saturated porous cavity. The cavity is bounded by thin horizontal plates with uniform thickness whose outer surfaces are subject to a constant heat flux. The main aim is to determine the effect of the presence of the bounding plates on the onset of convection. The onset criterion is found to be sensitively dependent on the relative thickness of the plates and the porous layer, , and their relative conductivities, d. For the long wavelength mode it is precisely Rac = 12(1 + 2d).
LanguageEnglish
Pages293-301
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume54
Issue number1-3
DOIs
StatusPublished - 3 Jan 2011

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Convergence of numerical methods
Natural convection
Heat flux
convection
conduction
Wavelength
Fluids
numerical stability
cavities
free convection
heat flux
conductivity
fluids
wavelengths
Convection

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The effect of conducting bounding plates on the onset of Horton-Rogers-Lapwood convection. / Mojtabi, Abdelkader; Rees, D Andrew S.

In: International Journal of Heat and Mass Transfer, Vol. 54, No. 1-3, 03.01.2011, p. 293-301.

Research output: Contribution to journalArticle

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