This paper presents a preliminary development and validation of a high-order coupled time-domain simulation code DARwind for floating offshore wind turbine systems. In the code, unsteady Blade-Element-Momentum method with some corrections has been utilized to calculate aerodynamic loads. Combination of potential-flow theory and Morison“s equation are applied to calculate hydrodynamic loads. A quasi-static catenary mooring model is used to consider restoring forces from mooring lines. Kane“s dynamic equations and a high-order coupled model with mode superposition are proposed to model kinematics and structural dynamics of floating offshore wind turbine systems. Subsequently, the effectiveness of the code and its unique high-order coupled dynamic characteristics have been verified by code-to-code tests.
Investigation on High-Order Coupled Rigid-Flexible Multi-Body Dynamic Code for Offshore Floating Wind Turbines
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Hu, Z, Chen, J, & Liu, G. "Investigation on High-Order Coupled Rigid-Flexible Multi-Body Dynamic Code for Offshore Floating Wind Turbines." Proceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. Volume 10: Ocean Renewable Energy. Trondheim, Norway. June 25–30, 2017. V010T09A039. ASME. https://doi.org/10.1115/OMAE2017-61074
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