Investigating the Impact of Geometric Parameters on Radial Fan Performance

Abstract

This study focuses on the evaluation of the performance of a radial fan, which is an essential component of various industrial and HVAC systems. The geometric parameters of the radial fan were simulated using ANSYS Workbench software, allowing for a detailed examination of its behavior under different operating conditions. Empirical data was collected through an experimental setup, enabling a comparison with the simulation results. The findings of this study indicate a high level of agreement between the simulation and experimental results, with a maximum discrepancy of only 3%. This close alignment highlights the accuracy and reliability of the simulation model. Furthermore, a comprehensive parametric analysis was conducted, focusing on four critical parameters: the number of blades, impeller width (the distance between the disk and shroud), outlet angle, and inlet angle. Variations in these parameters were explored, paying particular attention to their impact on three key performance metrics: the total pressure difference between the inlet and outlet, the static pressure difference between the inlet and outlet, and the fan's efficiency. Additionally, the study assessed the changes in shaft power resulting from these alterations.