The steady incompressible, viscous, two- dimensional flow of a solution in a channel was consid- ered. The bottom wall was porous and the fins were attached to the top wall. Employing control volume ap- proach, a computer program based on SIMPLE algorithm was developed. Computations were carried out to in- vestigate the effects of the inlet Reynolds number, the fin length, the suction Reynolds number and the slip coeffi- cient on the flow structure and the concentration distri- bution. It was observed that the thickness of concentration bondary layer increases in the flow direction. The con- centration on the porous wall and the concentration boundary layer thickness decrease with increasing fin length, the slip coefficient and the inlet Reynolds number. These results show that fins attached to the upper wall of The channel can be utilized to reduce the concentration Polarization and hence improve the effectiveness of the Separation process.
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