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International Journal of Engineering Mathematics
Volume 2014 (2014), Article ID 126218, 9 pages
Research Article

Non-Darcy Mixed Convection in a Doubly Stratified Porous Medium with Soret-Dufour Effects

Department of Mathematics, National Institute of Technology, Warangal Andhra Pradesh 506 004, India

Received 29 June 2013; Revised 3 November 2013; Accepted 22 November 2013; Published 9 January 2014

Academic Editor: Viktor Popov

Copyright © 2014 D. Srinivasacharya and O. Surender. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents the nonsimilarity solutions for mixed convection heat and mass transfer along a semi-infinite vertical plate embedded in a doubly stratified fluid saturated porous medium in the presence of Soret and Dufour effects. The flow in the porous medium is described by employing the Darcy-Forchheimer based model. The nonlinear governing equations and their associated boundary conditions are initially cast into dimensionless forms and then solved numerically. The influence of pertinent parameters on dimensionless velocity, temperature, concentration, heat, and mass transfer in terms of the local Nusselt and Sherwood numbers is discussed and presented graphically.