NAUTILUS-DTU10 MW Floating Offshore Wind Turbine at Gulf of Maine: Public numerical models of an actively ballasted semisubmersible: Public numerical models of an actively ballasted semisubmersible
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2018-10-10
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Abstract
This study presents two numerical multiphysics models of the NAUTILUS-10 floating support structure mounting the DTU10 MW Reference Wind Turbine at Gulf of Maine site, and analyses its dynamics. With the site conditions and the FAST model of the onshore turbine as the starting point, the floating support structure: tower, floating substructure with its corresponding active ballast system and station keeping system, was designed by NAUTILUS. The numerical models were developed and the onshore DTU wind energy controller was tuned to avoid the resonance of the operating FOWT by TECNALIA, in the framework of H2020 LIFES50+ project. This concept and its subsystems are fully characterised throughout this paper and implemented in opensource code, FAST v8.16. Here, the mooring dynamics are solved using MoorDyn, and the hydrodynamic properties are computed using HydroDyn. Viscous effects, not captured by radiation-diffraction theory, are modelled using two different approaches: (1) through linear and quadratic additional hydrodynamic damping matrices and (2) by means of Morison elements. A set of simulations (such as, decay, wind only and broadband irregular waves tests) were carried out with system identification purposes and to analyse the differences between the two models presented. Then, a set of simulations in stochastic wind and waves were carried out to characterise the global response of the FOWT.
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Offshore Wind Turbine , Wind energy , Ground supports , Hydrodynamics , Offshore oil well production , Radiation effects , Stochastic systems , Offshore Wind Turbine , Wind energy , Ground supports , Hydrodynamics , Offshore oil well production , Radiation effects , Stochastic systems , General Physics and Astronomy , SDG 7 - Affordable and Clean Energy , Project ID , info:eu-repo/grantAgreement/EC/H2020/640741/EU/Qualification of innovative floating substructures for 10MW wind turbines and water depths greater than 50m./LIFES 50plus , info:eu-repo/grantAgreement/EC/H2020/640741/EU/Qualification of innovative floating substructures for 10MW wind turbines and water depths greater than 50m./LIFES 50plus , Funding Info , European Union Horizon2020_x000D_programme under the agreement H2020-LCE-2014-1-640741, LIFES50+ project , European Union Horizon2020_x000D_ programme under the agreement H2020-LCE-2014-1-640741, LIFES50+ project
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Galván , J , Sánchez-Lara , M J , Mendikoa , I , Pérez-Morán , G , Nava , V & Rodríguez-Arias , R 2018 , ' NAUTILUS-DTU10 MW Floating Offshore Wind Turbine at Gulf of Maine: Public numerical models of an actively ballasted semisubmersible : Public numerical models of an actively ballasted semisubmersible ' , Journal of Physics: Conference Series , vol. 1102 , no. Conference 1 , 012015 . https://doi.org/10.1088/1742-6596/1102/1/012015