ABSTRACT

The effects of radiation and sinusoidal temperature on steady three-dimensional free convection flow of a viscous, incompressible fluid through a highly porous medium along a vertical porous plate in the slip flow regime are studied. In the analysis, it is considered that the plate is subjected to a periodic suction velocity. Approximate solutions for the velocity and temperature fields are obtained by using the series expansion method for an externally cooled plate, i. e., for a Grashof number greater than zero. Expressions for the friction factor and rate of heat transfer are also derived. It is observed that suction at the plate leads to a decrease in the main flow as well as in transverse flow and serves to stabilize the temperature. The results obtained are discussed using graphs and tables.