• EFFECT OF THERMAL DISPERSION AND VISCOUS DISSIPATION ON MHD RADIATIVE NON-DARCY MIXED CONVECTION IN FLUID SATURATED POROUS MEDIUM WITH RESPECT TO THE PERFORMANCE OF A SECOND ORDER FLUID PAST AN INFINITE PLATE WITH VARIABLE SUCTION UNDER THE INFLUENCE OF

Abstract

ABSTRACT
In this paper the effect of thermal dispersion and viscous dissipation on MHD radiative non-Darcy mixed convection in a fluid saturated porous medium (part a) and the class solutions of a second order fluid past a porous boundary and on the performance of fluid flow past an infinite plate with variable suction under the influence of magnetic field have been examined (part b). The salient features in both the cases have been compared to the best possible extent. Interestingly, some of the parameters in both the cases cause similar effect. It is found that, ( ) in thermal study is analogues to the velocity profiles in case of sinusoidal oscillations of the bounding surface while the dispersion parameter in the thermal system is equivalent to the frequency of excitation ( ). Further, the effect of porosity in case of visco elasticity parameter has similar effect as that of dispersion and radiation parameters. Also, it is observed that, the porosity of the bounding surface and magnetic effects are similar to that of radiation and dispersion parameters in case of thermal effects. However, it is noticed that, the investigations stated above are applicable in the boundary layer region.

Key words: Thermal dispersion, Viscous dissipation, Porous medium, Elastico viscous fluid, Sinusoidal disturbances, Variable suction