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传热学
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DOI: 10.1615/HeatTransRes.2015008037
pages 29-40

NATURAL CONVECTION IN A NON-DARCY POROUS MEDIUM WITH DOUBLE STRATIFICATION AND CROSS DIFFUSION EFFECTS

D. Srinivasacharya
Department of Mathematics, National Institute of Technology, Warangal-506004, India
O. Surender
Department of Mathematics, National Institute of Technology, Warangal-506 004, Telangana, India

ABSTRACT

This work explores the influence of the Soret and Dufour on natural convection heat and mass transfer over a semiinfinite vertical plate with uniform and constant wall temperature and concentration in a doubly stratified fluid-saturated porous medium. The Darcy−Forchheimer model is employed to describe the flow in a porous medium. Coordinate transformation is introduced to attain the nonsimilar governing equations, and the transformed boundary-layer equations are solved numerically. The influence of the governing parameters involved in the problem on the nondimensional velocity, temperature, concentration, heat and mass transfer rates are discussed and displayed through graphs.


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