eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2021-02-05 9 1 18 23 10.12691/ajme-9-1-3 AJME2021913 article Hazim Abed Mohammed Al-Jewaree drhaaljewary@yahoo.com 1 Dhia K. Suker 2 Department of Petroleum Engineering, College of Engineering, AlKitab University, Kirkuk, Iraq Mechanical Engineering Department, Umm Al-Qura University, Mekkah, Saudi Arabia All engineering industries have proven that there is a demand to maintain heat transfer and in many engineering production processes, an increase in the rate of thermal transfer is required.. The solution lies in adding solid bodies made externally from heat-conducting materials called fins, which in turn have been the subject of very large engineering research by changing shapes, lengths, axis, thicknesses, etc., in order to raise the efficiency of performance in heat transfer to avoid industrial problems and accidents. The materials type and surface area have direct affect of the heat transfer rate depends on the types of materials used and the surface area of the fin. One of the most popular choice is the radial annular fin due to the cylindrical primary surface where the performance of the fins is a function of many parameters, namely the heat transfer coefficient, the fin efficiency and the finsĄŻ thermal resistance. In this research work, an experimental study to investigate the effect of fin heat transfer performance characteristics elliptical fin shape at differnt at its major and minor axis ratio (a/b) with different cooling air velocities. As a results, the optimum ratio is found to be for an elliptical shape fins for forced convection. http://pubs.sciepub.com/ajme/9/1/3/ajme-9-1-3.pdf heat transfer performance natural convection elliptical fin and force convection