Design, Analysis, and Optimization of 2D 3-Blade Savonuis Vertical Axis Wind Turbine

Simulations of the aerodynamics of wind turbines serve as the foundation for this thesis. The goal of this thesis is to improve the savonius wind turbine's design and raise its power coefficient. The primary goal is to find the best three-bladed Savonius vertical axis wind turbine (VAWT) design. The study examines wind turbine aerodynamics and design optimization. Different 2D blade profiles are designed for automation purposes using ANSYS Space Claim software, and various 2D geometries are simulated using ANSYS Fluent software. Blade arc angle and blade thickness are the researched parameters. The study is performed on 6 geometries (140°, 150°, 160°, 170°, 180° and 190° blade arc angles) with 5 different inlet wind speed (2.5, 3, 3,5, 4, and 4.5) m/s and 2 different blade thickness (3 mm and 5 mm) for each geometry, which sums up 60 geometries. The findings depict the most efficient profile that gave the highest Cp with blade thickness 5 mm has a blade arc angle of 140° for lower inlet wind speed (2.5 and 3) m/s, while for higher inlet wind speed (3.5, 4 and 4.5) m/s the most efficient profile that gave the highest Cp with blade thickness 5 mm has a blade arc angle of 170°. Also, the most efficient profile that gave the highest Cp with a blade thickness of 3 mm has a blade arc angle of 150° for lower inlet wind speed (2.5, 3 and 3.5) m/s, while for higher inlet wind speed (4 and 4.5) m/s the most efficient profile that gave the highest Cp with blade thickness 3 mm has a blade of arc angle 170°. Blades were slightly unstable at higher inlet wind speeds (4 and 4.5) m/s compared to lower inlet wind speeds (2.5, 3 and 3.5) m/s. At higher inlet wind speeds (4 and 4.5) m/s, blades with a thickness of 5 mm were more stable than blades with a thickness 3 mm.