Analytical and Numerical Study of Soret and Dufour Effects on Double Diffusive Convection in a Shallow Horizontal Binary Fluid Layer Submitted to Uniform Fluxes of Heat and Mass

Combined Soret and Dufour effects on thermosolutal convection induced in a horizontal layer filled with a binary fluid and subject to constant heat and mass fluxes are investigated analytically and numerically. The thresholds marking the onset of supercritical and subcritical convection are predicte...

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Published inMathematical problems in engineering Vol. 2018; no. 2018; pp. 1 - 12
Main Authors Amahmid, Abdelkhalek, Hasnaoui, Mohammed, Bourich, M., Lagra, A., Er-Raki, M.
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Publishing Corporation 01.01.2018
Hindawi
Hindawi Limited
Subjects
Binary fluids
Computational fluid dynamics
Fluid flow
Fluids
Fluxes
Heat
Investigations
Mass transfer
Parallel flow
Physics
Theory
Thresholds
Viscoelasticity
Morocco
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Summary:Combined Soret and Dufour effects on thermosolutal convection induced in a horizontal layer filled with a binary fluid and subject to constant heat and mass fluxes are investigated analytically and numerically. The thresholds marking the onset of supercritical and subcritical convection are predicted analytically and explicitly versus the governing parameters. The present investigation shows that different regions exist in the N-Du plane corresponding to different parallel flow regimes. The number, the extent, and the locations of these regions depend on whether SrDu>-(1+Le2)/2Le2=f(Le) or SrDu<-(1+Le2)/2Le2. Conjugate effects of cross-phenomena on thresholds of fluid flow and heat and mass transfer characteristics are illustrated and discussed.
ISSN:1024-123X
1563-5147
DOI:10.1155/2018/7946078