Table of Contents
International Scholarly Research Notices
Volume 2014 (2014), Article ID 639159, 11 pages
http://dx.doi.org/10.1155/2014/639159
Research Article

On the Influence of Soret and Dufour Effects on MHD Free Convective Heat and Mass Transfer Flow over a Vertical Channel with Constant Suction and Viscous Dissipation

Department of Mathematics, Usmanu Danfodiyo University, PMB 2346, Sokoto State, Nigeria

Received 28 March 2014; Revised 10 June 2014; Accepted 7 July 2014; Published 29 October 2014

Academic Editor: Abhik Sanyal

Copyright © 2014 Ime Jimmy Uwanta and Halima Usman. 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.

Abstract

The present paper investigates the combined effects of Soret and Dufour on free convective heat and mass transfer on the unsteady one-dimensional boundary layer flow over a vertical channel in the presence of viscous dissipation and constant suction. The governing partial differential equations are solved numerically using the implicit Crank-Nicolson method. The velocity, temperature, and concentration distributions are discussed numerically and presented through graphs. Numerical values of the skin-friction coefficient, Nusselt number, and Sherwood number at the plate are discussed numerically for various values of physical parameters and are presented through tables. It has been observed that the velocity and temperature increase with the increase in the viscous dissipation parameter and Dufour number, while an increase in Soret number causes a reduction in temperature and a rise in the velocity and concentration.