Abstract
Abstract
Axial fans are the most efficient air handling machines used in various industries. In contrast to centrifugal fans, axial fan blades rotate through the liquid to transfer their kinetic energy. With an inline air flow direction, the geometric design of the axial fan blade is suitable for machines with low system resistance and higher mass flow rates. Diameter ratio (outer diameter / hub diameter) and fan rotating speed are commonly used to determine design parameters and adjust aerodynamic performance. The differential pressure and mass flow rate of the fans can be significantly impacted by the angle of attack of the blade. The purpose of the research is to discover new methods to enhance the aerodynamic performance of the axial fan. The comparison involves comparing the effects of the twist angle while keeping the tip angle constant. In addition to having a uniform angle of attack, it also has various angles of attack from the hub to the tip. By utilizing Computational Fluid Dynamics (CFD), the three-dimensional velocity and pressure distribution within the control volume will be shown. The numerical solutions for each case are shown along with the velocity vector and pressure distribution.