Time domain simulations of an offshore floating wind turbine have been performed. Hydrodynamic impulse responses of the floating platform are calculated with linear hydrodynamic simulation tool ACHIL3D. A user defined module for the wind turbine design code FAST has been developed to calculate hydrodynamic and mooring loads on the structure. Resolution of the movements of the system is done with FAST. Simulation results in time domain are compared with frequency domain results. In the frequency domain model, the whole system is linearized. In the time domain model, the wind turbine model is not linearized. A good agreement between time and frequency domain calculations is observed, even for the pitch motion. Furthermore we observe a non linearity in the response of sway, roll and yaw degrees of freedom around 0.3 rad.s-1. The effect of viscous damping on the movements of the floating wind turbine system has been studied with the time domain model, and a non linear hydrostatic and Froude-Krylov load model has been developed. Effects of these non linear terms are shown.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4437-3
PROCEEDINGS PAPER
Comparison of Time and Frequency Domain Simulations of an Offshore Floating Wind Turbine
Maxime Philippe,
Maxime Philippe
E´cole Centrale Nantes, Nantes, France
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Aure´lien Babarit,
Aure´lien Babarit
E´cole Centrale Nantes, Nantes, France
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Pierre Ferrant
Pierre Ferrant
E´cole Centrale Nantes, Nantes, France
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Maxime Philippe
E´cole Centrale Nantes, Nantes, France
Aure´lien Babarit
E´cole Centrale Nantes, Nantes, France
Pierre Ferrant
E´cole Centrale Nantes, Nantes, France
Paper No:
OMAE2011-49722, pp. 589-598; 10 pages
Published Online:
October 31, 2011
Citation
Philippe, M, Babarit, A, & Ferrant, P. "Comparison of Time and Frequency Domain Simulations of an Offshore Floating Wind Turbine." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Ocean Space Utilization; Ocean Renewable Energy. Rotterdam, The Netherlands. June 19–24, 2011. pp. 589-598. ASME. https://doi.org/10.1115/OMAE2011-49722
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