Since the How states of an offshore floating wind turbine (OFWT) differ from those of an onshore fixed wind turbine, it is questionable whether the aerodynamic load prediction of a turbine based on conventional blade element momentum theory (BEMT) is accurate. A generalized dynamic wake (GDW) method is developed to consider the dynamic wake effect, but it is only stable for lightly loaded wind turbines. In contrast to BEM and GDW, the unsteady vortex lattice method (UVLM) can inherently represent the nonuniform flow effects derived from the trailing wake of the turbine. The aim of this paper is to present a strategy for dynamic simulation of OFWT using a combination of the UVLM and FAST. In addition, an effort is made to determine the dynamic inflow effects at a fast pitching step rate on OFWT by comparing three different aerodynamic analysis models, namely, the BEM, GDW, and UVLM. The OC3 Hywind model was chosen for the simulation of a floating wind turbine. The results show that the wake influences have contributed to the time lag and overshoot of loading. Particularly, the limitation of GDW was captured when the wind turbine rotor was heavily loaded. Thus, the dynamic inflow effect should be considered using advanced aerodynamic modeling because the rotor of the floating wind turbine is heavily loaded under low wind speed conditions.
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