Computational Analysis of Pin Fin to Study the Effect of Temperature and Fin Material

Pin fin is an extended surface of particular device which increases the effective area of the surface, thereby increasing heat transfer rate in natural convection. By aiming to validate CFD results with experimental results, single-pin fin having brass material is going to be analyzed with the help of the best fin model of the project. The experimental setup is available in our heat transfer lab; the circular brass pin fin having length = 140 mm and diameter = 12.7 mm is analyzed experimentally and numerically using a software Ansys R 2022; to achieve the temperature dissemination along the fin length, we validate CFD result with experimental results getting 1.8% error. This work includes analysis of heat transfer parameters for fin such as heat transfer coefficient (HTC) in W/ \({\text{m}}^{2}\) K, efficiency of fin for different materials as well as for different temperatures. In this study, it is found that better efficiency is obtained for the aluminum material and better efficiency for temperature 89  C. For this analysis in CFD, mesh size is also decided by doing study of grid independence. For this, we compute heat transfer coefficient (HTC) for grid sizes 3 mm, 4 mm, and 5 mm, in which we see there is negligible difference obtained in HTC of 3 mm and 4 mm grid size. So, we select a 4 mm grid size for overall analysis. This project work includes effect of cooling in various fin base temperatures in natural convection and also includes the examination of fin performance for different materials. The better performance of fin obtained is that heat transfer coefficient is increased with increasing temperature and the performance of copper with high conductivity is high as compared to other materials.