Published 12 issues per year
ISSN Print: 1091-028X
ISSN Online: 1934-0508
Indexed in
EFFECT OF THROUGHFLOW ON DOUBLE DIFFUSIVE CONVECTION IN A POROUS MEDIUM WITH CONCENTRATION BASED INTERNAL HEAT SOURCE
ABSTRACT
Onset of double diffusive convection in a horizontal fluid saturated porous layer which is subjected to concentration-based internal heat source is studied. Here the flow is induced by vertical temperature and concentration differences across the boundaries. Effect of vertical throughflow is also considered in this investigation. The flow-governing parameters involved in this study are thermal Rayleigh number RaT and solutal Rayleigh number RaS, which are associated with thermal and concentration differences in the vertical direction, along with the Peclet number Pe, Lewis number Le, and measure of concentration-based internal heat source γ. To perform linear stability analysis, an eigenvalue problem is derived for Rayleigh number RaT, and it has been obtained numerically. Critical thermal Rayleigh number RaTC is evaluated for various values of flow-governing parameters. It has been noticed that oscillatory longitudinal modes are preferred modes of instability.
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Nield Donald A., Bejan Adrian, Double-Diffusive Convection, in Convection in Porous Media, 2017. Crossref
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Deepika N., Narayana P. A. L., Nonlinear Stability of Double-diffusive Convection in a Porous Layer with Throughflow and Concentration based Internal Heat Source, Transport in Porous Media, 111, 3, 2016. Crossref
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Sumithra R., Archana M. A., Acharya Deepa R., Two Component Benard-Marangoni Convection in a Composite System Subjected to Variable Heat Source, Journal of Mines, Metals and Fuels, 2022. Crossref