NATURAL CONVECTION IN A NON-DARCY POROUS MEDIUM WITH DOUBLE STRATIFICATION AND CROSS DIFFUSION EFFECTS

摘要

This work explores the influence of the Soret and Dufour on natural convection heat and mass transfer over a semi-infinite vertical plate with uniform and constant wall temperature and concentration in a doubly stratified fluid-saturated porous medium. The Darcy-Forchheimer model is employed to describe the flow in a porous medium. Coordinate transformation is introduced to attain the nonsimilar governing equations, and the transformed boundary-layer equations are solved numerically. The influence of the governing parameters involved in the problem on the non-dimensional velocity, temperature, concentration, heat and mass transfer rates are discussed and displayed through graphs.