Articles | Volume 6, issue 3
Wind Energ. Sci., 6, 867–883, 2021
Wind Energ. Sci., 6, 867–883, 2021

Research article 08 Jun 2021

Research article | 08 Jun 2021

Response of the International Energy Agency (IEA) Wind 15 MW WindCrete and Activefloat floating wind turbines to wind and second-order waves

Mohammad Youssef Mahfouz et al.

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Cited articles

Allen, C., Viselli, A., Dagher, H., Goupee, A., Gaertner, E., Abbas, N., Hall, M., and Barter, G.: Definition of the UMaine VolturnUS-S Reference Platform Developed for the IEA Wind 15-Megawatt Offshore Reference Wind Turbine, Tech. rep., National Renewable Energy Laboratory, available at: (last access: 16 April 2021), 2020. a
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Campos, A., Molins, C., Gironella, X., Trubat, P., and Alarcón, D.: Experimental RAO's analysis of a monolithic concrete spar structure for offshore floating wind turbines, in: Vol. 1: Offshore Technology, Offshore Geotechnics, Proceedings of the ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, 31 May–5 June 2015, St. John's, Newfoundland, Canada, V001T01A016,, 2015. a
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Coulling, A. J., Goupee, A. J., Robertson, A. N., and Jonkman, J. M.: Importance of Second-Order Difference-Frequency Wave-Diffraction Forces in the Validation of a FAST Semi-Submersible Floating Wind Turbine Model, in: Vol. 8: Ocean Renewable Energy, Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. 9–14 June 2013, Nantes, France, V008T09A019,, 2013. a
Short summary
This paper introduces the numerical models of two 15 MW floating offshore wind turbines (FOWTs) WindCrete and Activefloat. WindCrete is a spar floating platform designed by Universitat Politècnica de Catalunya, while Activefloat is a semi-submersible platform designed by Esteyco. The floaters are designed within the Horizon 2020 project COREWIND. Later in the paper, the responses of both models to wind and second-order waves are analysed with an emphasis on the effect of second-order waves.