eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2023-05-19 11 2 82 97 10.12691/ajme-11-2-4 AJME20231124 article Md Lutfor Rahman lutfor.mist@yahoo.com 1 Irfan Ahmed 1 Department of Mechanical Engineering, Bangladesh Army University of Science and Technology, Saidpur Cantonment, Bangladesh The performance of fin is of major concern for heat transfer applications. The present study dealt with experimental investigations of the thermal performance for perforated pin fin arrays. The fins are perforated with circular and hexagonal fins along flow direction. Forced convection heat transfer at Reynold number range between 1-3.5 x 104 have been investigated. The perforated pin fin arrays were tested against a base case of solid pin fin array of the same fin dimension. The pin fin arrays with hexagonal perforations exhibited the best performance with enhanced convective heat transfer coefficient, fin effectiveness, and fin efficiency. Thermal resistance decreased in hexagonal perforation than circular perforation and solid fins. http://pubs.sciepub.com/ajme/11/2/4/ajme-11-2-4.pdf heat transfer enhancement experimental heat transfer study forced convection heat transfer perforated fin array