Aerodynamic optimization and performance analysis of a small-scale wind turbine with nrel S826 airfoil

Small-scale horizontal-axis wind turbines play a significant role in decentralized energy production, offering sustainable solutions for residential and industrial applications. This study focuses on the aerodynamic design and optimization of a small-scale wind turbine utilizing the NREL S826 airfoil, known for its high efficiency at low Reynolds numbers. The primary objective of this research is to enhance power generation and operational efficiency by optimizing the blade geometry and angle of attack. Computational Fluid Dynamics (CFD) simulations and optimization software are used to analyze flow characteristics, pressure distributions, and the effects of turbulent flow around the NREL S826 airfoil. Blade twist and aerodynamic modifications are examined to minimize drag force and improve the lift-to-drag ratio. Additionally, numerical results are validated using literature references to compare with simulation performance metrics. The findings demonstrate that specific modifications to the NREL S826 airfoil, such as leading-edge improvements and optimized chord distribution, can significantly enhance the performance coefficient (Cp). The study investigates the impact of aerodynamic optimization on turbine efficiency using a constant wind speed of 10 m/s. These results contribute to the development of small-scale wind energy systems, revealing that optimizing NREL S826-based turbine blades can improve energy harvesting potential by 22%.