The periodically fully developed laminar heat transfer and fluid flow characteristics of an array of uniform plate length, aligned at angles to the air flow direction have been investigated numerically in the range Re=50-2300 using body-fitted coordinate system. Multisurface transformation is used in the grid generation in order to retain the periodic corresponding relations of the surfaces or lines in both physical and computational spaces. The computed results exhibit good agreement with the experimental data available in the literature. The results also show that both the intensity of heat transfer and the pressure drop increase with the increases in oblique angle and plate length.