Table of Contents
Journal of Fluids
Volume 2014 (2014), Article ID 479107, 7 pages
http://dx.doi.org/10.1155/2014/479107
Research Article

Double Diffusive Convection in a Layer of Maxwell Viscoelastic Fluid in Porous Medium in the Presence of Soret and Dufour Effects

1Department of Mathematics, Government College Dhaliara, Himachal Pradesh 177103, India
2Department of Mathematics, Government College Nadaun, Himachal Pradesh 177033, India

Received 7 February 2014; Revised 15 May 2014; Accepted 30 June 2014; Published 17 July 2014

Academic Editor: Mahmoud Mamou

Copyright © 2014 Ramesh Chand and G. C. Rana. 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

Double diffusive convection in a horizontal layer of Maxwell viscoelastic fluid in a porous medium in the presence of temperature gradient (Soret effects) and concentration gradient (Dufour effects) is investigated. For the porous medium Darcy model is considered. A linear stability analysis based upon normal mode technique is used to study the onset of instabilities of the Maxwell viscolastic fluid layer confined between two free-free boundaries. Rayleigh number on the onset of stationary and oscillatory convection has been derived and graphs have been plotted to study the effects of the Dufour parameter, Soret parameter, Lewis number, and solutal Rayleigh number on stationary convection.