Conference paper
Effect of second-order and fully nonlinear wave kinematics on a tension-leg-platform wind turbine in extreme wave conditions
In this study, we assess the impact of different wave kinematics models on the dynamic response of a tension-leg-platform wind turbine. Aero-hydro-elastic simulations of the floating wind turbine are carried out employing linear, second-order, and fully nonlinear kinematics using the Morison equation for the hydrodynamic forcing.
The wave kinematics are computed from either theoretical or measured signals of free-surface elevation. The numerical results from each model are compared to results from wave basin tests on a scaled prototype. The comparison shows that sub and superharmonic responses can be introduced by second-order and fully nonlinear wave kinematics.
The response at the wave frequency range is better reproduced when kinematics are generated from the measured surface elevation. In the future, the numerical response may be further improved by replacing the global, constant damping coefficients in the model by a more detailed, customizable definition of the user-defined numerical damping.
Language: | English |
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Publisher: | The American Society of Mechanical Engineers (ASME) |
Year: | 2017 |
Proceedings: | 36th International Conference on Ocean, Offshore and Artic Engineering |
Series: | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - Omae |
ISBN: | 0791857786 and 9780791857786 |
Types: | Conference paper |
DOI: | 10.1115/OMAE2017-61798 |
ORCIDs: | Pegalajar Jurado, Antonio Manuel , Borg, Michael and Bredmose, Henrik |