VISCO-ELASTIC FLUID FLOW WITH HEAT AND MASS TRASNFER IN A VERTICAL CHANNEL THROUGH A POROUS MEDIUM

A theoretical study of two-dimensional free convective flow of a visco-elastic fluid through a porous medium bounded by a uniformly moving long vertical wavy wall and a parallel flat wall in presence of heat and mass transfer has been discussed. The solutions consist of two parts: a mean part and a perturbed part. To solve the perturbed part, long wave approximation has been applied and for the mean part, the well known approximation used by Ostrach has been utilized. Solutions for the velocity, temperature, concentration, and skin friction, rate of heat transfer and rate of mass transfer have been obtained. The results are discussed for the positive values of Grashof number for heat transfer (i.e. flow on externally cooled plate). The visco-elastic effects on velocity profile, temperature field, concentration field, skin friction are analyzed graphically with the combination of other flow parameters involved in the solution. Key-words: Visco-elastic, Grashof number, heat and mass transfer, porous medium.