Experimental and numerical investigation of heat transfer enhancement using circular perforated fins

Abstract

Experiments were done to investigate the natural and forced convection of heat transfer along a flat surface equipped with various types of rectangular aluminum fins (solid and perforated). Fins selected with dimensions of(30mm height ×30 mm width ×1mm thickness). Perforated fins have various distributed holes(2 mm dia. for 9 holes and 4 mm dia. for 5 holes).For forced convection, the air flow channel selected with a cross section area of (100×100 mm2)for (1000 mm) length. Nine Thermocouples used to recorded the temperature distributed from the fin base to its tip. Flow pattern included laminar and the air flow towards the fin lateral area of (30 mm × 30 mm). The effect of number, size and arrangement of perforated fins was studied. higher heat transfer rates observed with increasing the number of circular holes also the effectiveness were increased due to the reduction into fin’s weight .Also a numerical study was done to investigate these temperature distribution used (SOLDWORKS) simulation program. Good agreements were noted when compared between experimental and theoretical works.