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Journal of Porous Media
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ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v5.i1.60
10 pages

Heat and Mass Transfer by Natural Convection from a Vertical Surface to the Stratified Darcian Fluid

Virendra Bansod
Department of Mathematics, Dr. B. A. Technological University, Lonere, India
P. Singh
Department of Mathematics, Indian Institute of Technology, Kanpur, India
B. V. Rathishkumar
Institute of Physical and Chemical Research Hirosawa 2-1, Wako-shi, Saitama, 351-0198, Japan; and Department of Mathematics, Indian Institute of Technology, Kanpur, India


The effect of the combined stratification on natural convection about a vertical surface in a porous medium is studied. This article reports a similarity solution and the Von Karman integral method for buoyancy-induced flow and heat and mass and mass flux from the wall is constant. Governing parameters for the problem are the buoyancy ratio N, Lewis number Le, thermal stratification parameter S2 and the solutal stratification parameter S2. Results for Nusselt and Sherwood numbers are presented for wide range of governing parameters, and it is observed that both these physical characteristics increase with S1 and S2.

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