Mixed Convection Flow of a Viscoelastic Fluid through a Porous Medium in a Vertical Channel with Permeable Walls

The Problem of convective flow in fluid saturated porous medium has been the subject of several resent papers. Interest in understanding the convective transport processes in porous material is increasing owing to the development of geothermal energy technology, high performance insulation for building and cold storage, renewed interest in the energy efficient drying processes and many other areas. It is also interest in the nuclear industry, particularly in the evaluation of heat removal from a hypothetical accident in a nuclear reactor and to provide effective insulation. Compressive literature surveys concerning the subject of porous media can be found in the most recent books by Ingham and Pop [45], Nield and Bejan [55], Vafai [83], Pop and Ingham [59] and Bejan and Kraus [16].