الفهرس 
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Abstract
The aim of the present work is an experimental investigation of forced convection heat transfer of air from an inclined heated plate in a porous medium. An experimental setup was designed and constructed for this investigation . the experiments were carried out on an aluminum flat plate of 320mm length, 140mm width, and 6mm thickness and the plate was electrically heated plate was inclined on the flow direction with different angles of attack varied from 0 deg, to 30 deg, within a range of Reynolds number.
The porous media used in the experiments were made of PVC, glass, and stainless steel materials, covering a wide range of solid thermal conductivity. The normal sphere diameter of all materials was nearly about 12mm, and the height of the porous media was 60 mm over the tested plate.
A Preliminary series of experiments eas carried out for the smooth horizontal plate to check the validity of the present setup and the measuring instruments. The present correlation of the average Nusselt number for the smooth horizontal plate was compared with the previous published correlations and fair agreement was found.
For smooth plate and the same inclination angle, the results showed that the heat transfer coefficient increase with the increasing the flow Reynolds number. Also, it was found that the heat transfer coefficient was increase with increasing the inclination angle, and reaches the maximum enhancement ratio at an inclination angle of 20 and with further inclination of the heating plate, the heat transfer coefficient decreases.
For the plate in a porous media and same inclination angle, it was abserved that the existence of the packed bed increases the heat transfer coefficient. In addition, for a constant particle size, higher heat transfer coefficients were obtained with higher particle thermal conductivity.
Moreover, for the same porous material, heat transfer cosfficient is increased with increasing the inclination angle until it reached the maximum value at an inclination angle of 20, and with further inclination of the heating plate the heat transfer coefficient begins to decrease.
Finally, an empirical correlation of the average nusselt number was obtained utilizing the present evperimental data as a function of the Reynolds number, the inclination angle, and the thermal conductivity of the packing material.