Optimizing Wind Turbine Performance Using NACA 6409 Airfoil for Low to Moderate Wind Speeds: A Q-Blade Simulation Study

Hendry Sakke Tira, Arif Furqon

Abstract


This study aims to optimize the wind turbine design using the NACA 6409 airfoil through simulation based on the Q-Blade software. Wind turbines are a key technology in harnessing renewable energy, especially in areas with low to medium wind speeds. In this study, the NACA 6409 airfoil was selected due to its aerodynamic characteristics, which can generate high lift with low drag, thus increasing the efficiency of converting wind energy into mechanical energy. Simulations were carried out using the Blade Element Momentum (BEM) method to evaluate the turbine's performance at various angles of attack (AoA) and Tip Speed Ratios (TSR). The simulation results showed that the NACA 6409 airfoil could achieve a maximum power coefficient (Cp) at a TSR of 8, indicating optimal efficiency for the wind speed conditions modeled at the research location. Additionally, increasing the angle of attack resulted in an increase in lift coefficient (Cl) up to a critical point at 14°, where stall phenomena occurred, reducing aerodynamic performance. Pressure distribution around the airfoil was also analyzed to identify areas with the highest lift potential. This study concludes that a turbine design with the NACA 6409 airfoil can provide efficient performance in moderate wind speed conditions, making it a suitable solution for areas like Semayan Village, Lombok Island, Indonesia. The use of Q-Blade has proven effective in optimizing design and predicting turbine performance before a physical prototype is developed.

Keywords


NACA 6409, Q-blade, blade element momentum, Semayan village

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DOI: http://dx.doi.org/10.52155/ijpsat.v47.1.6655

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