Three Dimensional Radiative Heat and Mass Transfer Periodic Flow through a Vertical Porous Channel with Transpiration Cooling and Slip Boundary Conditions

In this paper we have studied a free and forced convective flow of a v iscous incompressible fluid through a vertical porous channel bounded by two vertical p lates moving with same velocity but in opposite directions with slip parameters. The wall temperature and the mass concentration are assumed to be spanwise consinusoidal. Expressions for velocity, temperature and concentration profiles along with skin frict ion and Nusselt number are obtained and comparitive study is made to analyze the effects of different parameters. We observe that skin frict ion (|C f|) is lo wer for water (Pr = 7, Sc = 0.61) than for air (Pr = 0.71, Sc = 0.22).