Table of Contents
ISRN Thermodynamics
Volume 2012 (2012), Article ID 670396, 8 pages
http://dx.doi.org/10.5402/2012/670396
Research Article

Effects of Thermal Diffusion and Radiation on Unsteady MHD Free Convection Flow Past an Infinite Heated Vertical Plate in a Porous Medium

1Department of Mathematics, GITAM University, Hyderabad Campus, Hyderabad, Andhra Pradesh 502 329, India
2Department of Mathematics, Sri Venkateswara University, Tirupati, Andhra Pradesh 517 502, India

Received 25 September 2012; Accepted 27 October 2012

Academic Editors: R. R. Burnette and P. Trens

Copyright © 2012 S. Sivaiah et al. 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

We have explored the influence of thermal diffusion and radiation on unsteady magnetohydrodynamic free convection flow past an infinite heated vertical plate in a porous medium. The governing boundary layer equations are written into a dimensionless form by similarity transformations. The transformed nonlinear differential equations are solved numerically with finite element methods. Numerical calculations are carried out for different values of dimensionless parameters. The results are presented graphically for velocity, temperature, and concentration profiles and show that the flow field and other quantities of physical interest are significantly influenced by these parameters.