JMAT_V3_N3_RP4 M. Rajaiah Sudhakaraiah A. Sivaiah M. Venkatalakshmi P. Journal on Mathematics 2277-5137 3 3 43 56 Viscous MHD Flow, Oscillating Infinite Vertical Plate, Variable Temperature This paper analyzes the Dufour and Soret effects on the MHD flow with heat and mass transfer on flow past an oscillating infinite vertical plate with variable temperature and variable mass through porous medium. The dimensionless governing partial differential equations are solved by using finite difference method. The velocity, temperature and concentration profiles are considered for different physical parameters. The results are analyzed through graphs and tables. It is observed that the velocity profiles increase through increase in Dufour (Du) and Soret (Sr) numbers and decrease with increase in permeability (K) and suction parameter (V0). An increase in increase in Du, leads to increase in the temperature. The concentration profiles increase with increase in Prandtl (Pr) and Soret numbers, wt and decreases through increase in Schmidt number (Sc), , Du, and also with suction V0. The shear stress increases with increase in modified Gr, K, Ec, Du, Sc, V0 and decreases through an increase in Hartmann (M)and Grashof (Gr) numbers, Pr, Sr, and . Increase in M, Gc, K, Pr, Sr, and V0 causes decrease in the rate of heat transfer and increase in Gr, Ec, Du, , and Sc leads to increase in the rate of heat transfer. The rate of mass transfer increases through an increase in M, Gr, Gc, K, Pr, Du, and V0 and decreases with an increase in Ec, Sr, , and Sc. In the absence of suction, viscous dissipation, and mass transfer, the results obtained were good agreement with Sarswat and Srivastava (16). The graphs are drawn to show the comparative study. July - September 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3109