In uence of periodic temperature and concentration on unsteady free convective viscous incompressible ow and heat transfer past a vertical plate in slip- ow regime

Abstract

The e ect of combined heat and mass transfer on unsteady free convective, viscous incompressible ow past a vertical at plate in slip- ow regime is studied. Assuming variable suction at the plate, approximate solutions are obtained for velocity, skin-friction, temperature, heat transfer and concentration. During the course of discussion, the e ects of Gr (Grashof number based on temperature), Gc (modi ed Grashof number based on concentration di erence), A (suction parameter) and ! (frequency parameter) for carbon dioxide (Sc = 0:94) in air (Pr = 0:71) are presented and discussed graphically