Validation of INNWIND.EU Scaled Model Tests of a Semisubmersible Floating Wind Turbine

The subject of this study is the verification and the validation of existing numerical codes for floating offshore wind turbine structures using wave tank model tests as part of the INNWIND.EU project. A model of the OC4-DeepCwind semisubmersible platform, together with a Froude-scaled rotor model, is tested in a combined wind-and-wave basin. The simulation environment comprises a multibody approach with hydrodynamic and aerodynamic loads and mooring line forces. The focus of this paper is the validation of the hydrodynamics of a modified model hull shape, which compensates for the excess mass of the nacelle. The results show that the simulation model agrees well with the experiment.

[1]  Donna Heimiller,et al.  Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios , 2012 .

[2]  Guilherme Vaz,et al.  Analysis of Aerodynamic Performance of Floating Wind Turbines Using CFD and BEMT Methods , 2015 .

[3]  Gerson Fernandes,et al.  Influence of the Rotor Characterization on the Motion of a Floating Wind Turbine , 2015 .

[4]  Erik-Jan de Ridder,et al.  Comparison of Model Tests and Coupled Simulations for a Semi-Submersible Floating Wind Turbine , 2014 .

[5]  Richard W. Kimball,et al.  Wind/Wave Basin Verification of a Performance-Matched Scale-Model Wind Turbine on a Floating Offshore Wind Turbine Platform , 2014 .

[6]  Jason Jonkman,et al.  Comparison of Second Order Loads on a Semisubmersible Floating Wind Turbine , 2014 .

[7]  B. Lemehaute.  An introduction to hydrodynamics and water waves , 1976 .

[8]  Jason Jonkman,et al.  Summary of Conclusions and Recommendations Drawn From the DeepCwind Scaled Floating Offshore Wind System Test Campaign , 2013 .

[9]  S. Butterfield,et al.  Energy from Offshore Wind , 2006 .

[10]  Jason Jonkman,et al.  Definition of the Semisubmersible Floating System for Phase II of OC4 , 2014 .

[11]  Erik-Jan de Ridder,et al.  Development of a Scaled-Down Floating Wind Turbine for Offshore Basin Testing , 2014 .

[12]  Richard W. Kimball,et al.  FAST Code Verification of Scaling Laws for DeepCwind Floating Wind System Tests: Preprint , 2012 .

[13]  Jason Jonkman,et al.  Importance of Second-Order Difference-Frequency Wave-Diffraction Forces in the Validation of a FAST Semi-Submersible Floating Wind Turbine Model , 2013 .