Floating wind turbines are subjected to combined aerodynamic and hydrodynamic loads varying both in time and in amplitude. In this study a multi-column tension-leg-type floating wind turbine (WindStar TLP system) is investigated for its global performance under normal operating conditions and parked conditions. The coupled dynamic response of the WindStar TLP system is analysed using the fully coupled aero-hydro-servo-elastic time domain simulation tool FAST. Three different loading scenarios (wind-only cases, wave-only cases and combined wind and wave cases) are examined to identify the dominant load on the responses.

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