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Journal of Applied Mathematics
Volume 2014, Article ID 256761, 8 pages
http://dx.doi.org/10.1155/2014/256761
Research Article

MHD Flow of a Viscous Fluid over an Exponentially Stretching Sheet in a Porous Medium

1Department of Mathematics, University of Azad Jammu and Kashmir Muzaffarabad, Azad Kashmir 13100, Pakistan
2Theoretical Physics Division, PINSTECH, P.O. Nilore, Islamabad 44000, Pakistan
3Department of Physics, University of Azad Jammu and Kashmir Muzaffarabad, Azad Kashmir 13100, Pakistan
4Department of Computer Sciences and Information Technology, University of Azad Kashmir, Azad Kashmir 13100, Pakistan

Received 18 January 2014; Revised 2 April 2014; Accepted 8 April 2014; Published 30 April 2014

Academic Editor: Ning Hu

Copyright © 2014 Iftikhar Ahmad 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

Radiation effects on magnetohydrodynamic (MHD) boundary-layer flow and heat transfer characteristic through a porous medium due to an exponentially stretching sheet have been studied. Formulation of the problem is based upon the variable thermal conductivity. The heat transfer analysis is carried out for both prescribed surface temperature (PST) and prescribed heat flux (PHF) cases. The developed system of nonlinear coupled partial differential equations is transformed to nonlinear coupled ordinary differential equations by using similarity transformations. The series solutions for the transformed of the transformed flow and heat transfer problem were constructed by homotopy analysis method (HAM). The obtained results are analyzed under the influence of various physical parameters.