Rotation and Heat Absorption Effects on Unsteady MHD Free Convection Flow in a Porous Medium past an Infinite Inclined Plate with Ramped Wall Temperature

摘要

The combined effects of mass transfer and rotation on unsteady magnetohydrodynamic (MHD) free convection flow in a porous medium past an infinite inclined plate with ramped wall temperature has been investigated. The effects of thermal diffusion and heat absorption are also observed. Exact solution using Laplace transforms technique has been obtained for the velocity, temperature and concentration fields. The analytical expressions for nondimensional skin-friction, Nusselt number and Sherwood number have been computed. The influence of various embedded flow parameters such as Prandtl and Schmidt numbers, inclination angle, and rotation parameter has been analysed through graphs. It is found that, inclination angle tend to retard fluid flow in the primary and secondary flow directions. Whereas rotation has a retarding influence on the primary flow direction but accelerating in the secondary flow direction.