JFET_V6_N2_RP6 M.C. Raju S.V.K. Varma N. Anandareddy Journal on Future Engineering and Technology 2230 – 7184 6 2 45 49 Natural Convection, Thermal Diffusion, Magnetic Field, Incompressible Fluid, Binary Mixture, Porous Medium In this paper, the effect of small uniform magnetic field on separation of a binary mixture in presence of thermo diffusion for the case of fully developed natural convection of a fluid between two heated inclined plates in porous medium is investigated. Neglecting the induced electric field the equations governing the motion, temperature and concentration are solved by simple perturbation technique, in terms of dimensionless parameter measuring buoyancy force. The expressions for velocity, temperature and concentration are obtained. The effects of Hartmann number M, thermal diffusion number t , the constant N which measures the buoyancy force and the angle Pie that the plates make with the horizontal are studied on the flow quantities and the results are discussed through graphs. November 2010 - January 2011 Copyright © 2011 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1325