No abstract

The present article discusses the effect of high concentration at upper vertical surface in a square porous cavity. The right vertical surface is maintained at constant concentration Cc such that Cw>Cc. The left and right vertical surfaces of cavity are maintained at isothermal temperature Tw and Tc where Tw>Tc. The governing momentum, energy and concentration equations are converted into algebraic form of equations using finite element method. The domain is meshed with triangular elements with proper care to capture the high degree of nonlinearity at the boundaries of square cavity. Results are discussed with respect to Lewis number, buoyancy ratio and Rayleigh number.