ANALYSIS OF VARIOUS FLOW ENTITIES ON THE FLOW PAST A SEMI INFINITE MOVING VERTICAL PLATE WITH VISCOUS DISSIPATION

Abstract

A detailed analysis of various flow entities on the flow past a semi infinite inclined porous plate with viscous dissipation under the influence of gravitational force has been exhaustively examined in this paper. It is observed that, as the Schmidt number increases the fluid velocity decreases initially and thereafter it increases. Further, it is seen that far away from the boundary, a significant contribution by Schmidt number has been noticed. Further, at times, for significant values of the porosity of the bounding surface a backward flow is noticed. When the porosity of the bounding surface is held constant and as the Solutal Grashof number increases, a backward flow is noticed in the boundary layer region and as we move far away from the boundary, the velocity field in general increases. It is noticed that, as the porosity of the fluid bed increases backward flow is noticed. However, as we move far away from the boundary, the pore size of the fluid bed does not contribute much to the velocity profiles. Further, it is seen that the velocity of the fluid is absolutely zero and is found to be independent of pore size of the fluid bed. The increase in the angle of inclination and far away from the bounding surface not much of appreciable change in the velocity field is noticed. Significant contribution within the boundary layer region is seen with increase in the angle of inclination. Further, the skin friction is found to be independent of Schmidt number. It is seen that as the porosity decreases the skin friction is found to be decreasing considerably.
Key words: Heat transfer, viscous dissipation, radiation, concentration and porosity.