Abstract: The present review paper focus on the design and thermal analysis of rectangular fin array with perforation and without perforation. Recently the fins are commonly used to increase the heat transfer rate between the surrounding fluid and surfaces in heat exchange appliances. Various fin geometries available with different shape, size and perforation; in this paper we use the rectangular fins having different percentage of perforation such that plane, 10%, 20% and 30% of perforation. The effect of percentage of perforation on the rectangular perforated fin array by natural convection with constant heat capacity. To observe the total heat flux and temperature distribution of fin array with and without perforation by using the finite element method

Keywords: Perforation, Fins, Steady state, Natural convection