Investigation of a New Blade Design to Improve the Efficiency of an Axial Fan Used in an Underground Mine

Authors : Güneyhan Taşkaya, Beytullah Erdogan

Pages : 144-162

View : 93 | Download : 58

Publication Date : 2024-11-25

Article Type : Research Paper

Abstract :The blade geometry of a 40 cm diameter axial fan with a front stator cylindrical duct used in the ventilation of an underground mine is redesigned. The Computer Aided Design (CAD) geometry of the existing fan was extracted and all parameters were analysed. Keeping the geometrical characteristics of the real fan constant, a redesign was made according to the system requirements and a new blade profile was selected to provide the required lifting force. In addition to National Advisory Committee for Aeronautics (NACA) 747A315 and NACA 6412 airfoils, Computational Fluid Dinamics (CFD) analysis of NACA 63-412 airfoil was performed and airfoil performance ratios (CL/CD) were determined. The rotor geometry designed using the NACA 63-412 airfoil and the existing fan geometry were combined in CAD environment. The CFD results of the new fan were compared with those of the existing fan The CFD results of the new fan were compared with the existing case. Accordingly, in the existing fan, at 3700, 4000, 4700 rpm and a constant flow rate of 2 kg/s, 25%, 37.5% and 43.5% performance increases were obtained with mass flow rates of 2.5, 2.75, 2.87 kg/s respectively in the new fan design.
Keywords : Airfoil, eksenel fan, HAD, fan kanatları, rotor, havalandırma