Soret and Dufour Effects on Free Convection Heat and Mass Transfer along a Horizontal Plate in Non-Darcy Porous Medium

Murthy, P V S N and P A, Lakshmi Narayana (2015) Soret and Dufour Effects on Free Convection Heat and Mass Transfer along a Horizontal Plate in Non-Darcy Porous Medium. International Journal of Fluid Mechanics Research, 37. pp. 70-84. ISSN 1064-2277

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Abstract

The effect of Soret and Dufour parameters on the non-Darcy natural convection over a horizontal flat plate in saturated porous medium is studied using similarity technique. Forchheimer extension is considered in the flow equations. Wall temperature and concentration distributions are assumed to be of the form Ax1/2 and Bx1/2 respectively, where x is the distance from the leading edge. The effect of Soret parameter Sr, Dufour parameter Df, diffusivity ratio Le, buoyancy ratio parameter N and the inertia parameter Gr on non-dimensional temperature and concentration, heat and mass transfer coefficients are analyzed. The variation of heat and mass transfer coefficients with these second order effects is presented for various values of the flow governing parameters.

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