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August 22, 2025

Multi-Physics Modeling of Floating Offshore Wind Turbine Dynamics During Super Typhoons: Mooring Line Failure Mechanisms and System Response Analysis

Puntos clave

Mooring line failures during super typhoons can significantly impact floating offshore wind turbines' dynamics and safety.
The study identifies key failure risks and dynamics, with critical insights into turbine component responses during severe conditions.
Utilizing a novel typhoon-wind-field and wave-stage coupling model, the research models 3D wind and wave interactions throughout super typhoons.
Results suggest enhanced design strategies for floating offshore wind turbines to withstand the extreme conditions posed by super typhoons.

Resumen

Floating offshore wind turbines (FOWTs) face significant challenges during super typhoons, especially in typhoon-prone regions like China’s southeastern coastline. Effective disaster mitigation and load reduction require accurate characterization of FOWT dynamics under extreme typhoon conditions, yet the underlying response mechanisms remain unresolved. This study investigates the dynamic response of a 5Formula: see textMW OC4-DeepCwind semi-submersible FOWT during mooring line failure induced by super typhoons. The proposed methodology offers three key contributions: (1) A method called “Typhoon-Wind-Field and Wave-Stage Coupling Model” is proposed, enabling detailed modeling of three-dimensional wind field and wave field throughout the entire typhoon process; (2) identification of mooring line failure risks under typhoon conditions and analysis of resulting impacts on critical turbine components; (3) examination of both shutdown and disconnected turbine states, a scenario rarely studied in prior work. The results provide insights into typhoon-induced failure risks and support the design of more resilient FOWTs.

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