Thermal Analysis of Vertical Heated Cylindrical Surface Employing V - Shape Fin Surfaces

Abstract

Natural convection is an important and economical mode of heat transfer .It is used in many of the engineering applications such as cooling of electronic components, cooling of Printed circuit boards, HVAC & R, I.C. engines fins, radiators of automobiles etc. Some of these heat sinks are cylindrical in shape. The heat that is produced in such system that conducts through the walls surfaces is need to be continuously dissipated to the surrounding atmosphere to keep the system in steady state condition. More quantities of heat have to be dissipated from small area as heat transfer by convection between a surface and the fluid surroundings. It can be improved by attaching fins or by use of some form of extended surfaces. V shape fin geometries have been selected for cooling such cylindrical surfaces or heat sinks. Initially the dimensions for the vertical cylinder with array of v shape fins have been obtained. Computational analysis of array of v shape fins over vertical heated cylinder have been studied by using Ansys software. The results reveal that the 60-degree V-shaped fins exhibit the highest natural convection heat transfer coefficient, owing to their streamlined flow-promoting characteristics. These V-shaped fins act as flow turbulators, causing minimal air obstruction and, consequently, enhancing heat dissipation. The computational findings are further validated by comparing them with analytical results, affirming the effectiveness of this approach in improving heat transfer from cylindrical surfaces. This research contributes to the understanding and optimization of natural convection heat transfer in cylindrical systems utilizing V-shaped fins, demonstrating its potential for enhancing thermal performance in various engineering applications