Abstract

The heat and mass transfer characteristics of non-Darcy mixed convective flow of a viscous electrically conducting fluid through a porous medium in a circular cylindrical annulus in the presence of temperature gradient heat sources with Soret and Dufour effects have been analyzed. The partial differential equations governing the problem under consideration are transformed into a system of ordinary differential equations and are solved numerically by using the Galerkin finite element method. The velocity, temperature and concentration profiles are presented graphically for various values of the parameters.

Key words: Heat transfer, mass transfer, Soret effects, Dufour effect, and temperature gradient heat sources.