Fluid–Structure Interaction Analysis of a Wind Turbine Blade with Passive Control by Bend–Twist Coupling

The idea of improving the energy output for small wind turbines without compromising remaining aspects technology, such as costs and structural integrity, is very appealing in context growing concern global warming goal providing electricity to remote isolated regions. This work aims contribute development distributed generation by exploring effects bend–twist coupling on performance a turbine with focus rotor based NREL Phase VI blade geometry. After defining structure composite materials exhibiting behavior along reference counterpart, comparative numerical analysis performed using Fluid–Structure Interaction (FSI) analysis. main framework commercial software consists finite-volume solver fluid physics, finite-element solid interface interaction problem. results, complemented predictions from one-way blade-element momentum theory are used define increments torque. annual yield shows 3% increase due passive pitch mechanism, considering Rayleigh distribution an 11 m/s average speed. Simultaneously, causes 0.2% 0.3% root flapwise moment thrust force, respectively, when parked conditions simplified extreme model.