Prediction of aerodynamic performance of NREL offshore 5‐MW baseline wind turbine considering power loss at varying wind speeds

In this study, a computational fluid dynamics (CFD) model was developed to simulate the aerodynamic performance of National Renewable Energy Laboratory (NREL) offshore 5-MW baseline wind turbine with single rotor and full turbine. Using statistical methods, relation between pitch angle when speed is above rated analyzed; furthermore, other published data were compiled establish functional equations power, thrust various inflow speeds, angles. addition, according shape optimization based on parametric modeling, two-dimensional cross-section blade can be defined through metasurface approach, three-dimensional surface modeling blade, nacelle, tower completed using nonuniform rational B-splines (NURBS) interpolator. terms simulation, unstructured polygon mesh used herein discretize space highly curved twisted surfaces blade. compact accurate form obtained grid independence test will analyze distribution pressure coefficient, shear stress limited streamline at speeds angles understand differences different turbulence models causes power attenuation high speeds. phenomena blade-tip vortices, dynamic stall, loading, interaction nacelle collectively explored.