• HEAT AND MASS TRANSFER IN FREE CONVECTION FLOW PAST AN OSCILLATING PLATE IN POROUS MEDIA

Abstract

The influence of various flow entities that influence velocity and skin friction in case of mixed convection flow over an inclined plate has been examined at length in this paper. It is seen that as the Schmidt number increases the velocity also increases. Not much of significant variation is seen near the boundary layer, but more dispersion is observed as we move away from the lower plate. Further, in some cases, backward flow is noticed and this could be due to the increase in the frequency of oscillation. Also, it has been observed that, the nature of velocity profiles don’t change qualitatively even when the Grashof number is changed marginally. This indicates that the Grashof number does not play any significant role for marginal increases. In a situation, when both and are identical, the velocity decreasing initially and thereafter increases in the core region subsequently decreases. However, a backward flow is not seen in this case. In general, it is seen that as the Schmidt number increases the boundary surface does not experience any friction. However as the Grashof number increases the skin friction appears to be increasing and up core minutely. It is concluded that while all other parameters remaining same, increase in Grashof number contributes increase in skin friction. Increase in Gr (modified Grashof number) is found to be relatively proportional to increase in skin friction.