DUFOUR AND SORET EFFECT ON UNSTEADY MHD FREE
CONVECTION FLOW PAST A SEMI-INFINITE MOVING VERTICAL
PLATE IN A POROUS MEDIUM WITH VISCOUS DISSIPATION
J. Venkata Madhu1
, M. N. Raja Shekar2
, K.saritha3 B. Shashidar Reddy4
1Department of Mathematics, SNIST, Ghatkesar, Hyderabad-501301, Telangana State, INDIA.
2Department of Mathematics, JNTUH CEJ, Karimnagar, Telangana State, INDIA.
3Department of Mathematics, TKREC, Meerpet, Hyderabad, Telangana State, INDIA.
4Department of Mathematics, MGIT, Gandipet, Hyderabad-500075, Telangana State, INDIA.
This paper investigates the Dufour and Soret effects on unsteady MHD free convection flow past
a semi-infinite moving vertical plate in a porous medium considering the viscous dissipation
effects. The resulting governing equations are transformed into non linear ordinary differential
equations using similarity transformation. The set of non linear ordinary differential equations
are first linearized by using Quasi-linearization technique and then solved numerically by using
implicit finite difference scheme. Then the system of algebraic equations is solved by using
Gauss-Seidal iterative method. The solution is found to be mainly dependent on six governing
parameters including the magnetic field parameter M, the suction parameter v0, Soret number Sr,
Dufour number Du, Eckert number Ec, and Darcian parameter Da. Numerical results are
tabulated for the local Nusselt number and Sherwood number. Velocity, Temperature and
Concentration profiles drawn for different controlling parameters reveal the tendency of the
Keywords: Magnetic field effects, Soret and Dufour effects, suction and viscous dissipation.