Aerodynamic and Structural Assessment of FOWT Rotor Under Varying Tilt Angle

The effect of wind and waves results in a sixdegree- of-freedom motion of the platform, directly influencing turbine performance. This research examines the effects of rotor tilt angle on both aerodynamic performance and structural response employing computational fluid dynamics (CFD) analysis and mapping aerodynamic loads onto the finite element (FE) mesh for structural analysis of NREL 5MW reference wind turbine rotor. Increased rotor tilt angle reduces turbine performance. Fluidstructure analysis shows higher flap-wise displacement with larger tilt angles, impacting thrust and power output. The displacement and stress patterns aligns with observed data.