International Conference on Advances in Civil, Structural and Mechanical Engineering - CSM 2014
Author(s) : BAYRAM ŞAHİN, EYÜPHAN MANAY, KADIR GELİŞ , VEYSEL ÖZCEYHAN
In this study, turbulent convection heat transfer and pressure drop from a surface equipped with perforated fins with square cross section were investigated numerically. At constant clearance ratio (C/H=0), the pin-fin spacing ratio in stream wise direction (Sy/D=1.208, 1.944 and 3.4) and the Reynolds number (Re=13.500, 27.500 and 42.000) on heat transfer and pressure drop were examined. RNG based k-ε turbulent model and SIMPLE algorithm were used for governing equations. A constant heat flux of 3200 W/m2 was applied to the base of pin-fins. The results of the heat transfer and pressure drop characteristics with respect to appropriate variables were presented. The heat transfer increased with increasing Reynolds number and with decreasing clearance ratio and spacing ratio. The fin height of H=100 mm, the spacing ratio of Sy/D=1.208 and the Reynolds number of Re=42.000 were better for cooling processes. The best overall heat transfer enhancement was obtained in the case of Sy/D=1.208, C/H=0 and Re=13.500.