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Offshore Code Comparison Collaboration within IEA Wind Task 23: Phase IV Results Regarding Floating Wind Turbine Modeling. OFFSHORE: TOOLS, SUPPORT STRUCTURES


Offshore wind turbines are designed and analyzed using comprehensive simulation codes that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. This paper describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, which operates under Subtask 2 of the International Energy Agency Wind Task 23. In the latest phase of the project, participants used an assortment of codes to model the coupled dynamic response of a 5-MW wind turbine installed on a floating spar buoy in 320 m of water. Code predictions were compared from load-case simulations selected to test different model features. The comparisons have resulted in a greater understanding of offshore floating wind turbine dynamics and modeling techniques, and better knowledge of the validity of various approximations. The lessons learned from this exercise have improved the participants? codes, thus improving the standard of offshore wind turbine modeling.


Academic chapter/article/Conference paper


  • Research Council of Norway (RCN) / 193823




  • Jason Jonkman
  • Tor Anders Nygaard
  • Karl Jacob Maus
  • Torben J. Larsen
  • Anders Melchior Hansen
  • Madjid Karimirad
  • Zhen Gao
  • Torgeir Moan
  • Ivar John Fylling
  • James Nichols
  • Martin Kohlmeier
  • Javier Vergara
  • Daniel Merino
  • Wei Shi
  • Hyunchul Park


  • National Renewable Energy Laboratory
  • Institute for Energy Technology
  • Norges miljø- og biovitenskapelige universitet
  • Technical University of Denmark
  • Norwegian University of Science and Technology
  • SINTEF Ocean / Skip og havkonstruksjoner
  • Unknown
  • Gottfried Wilhelm Leibniz Universität Hannover
  • Pohang University of Science and Technology






Proceedings of the European wind energy conference & exhibition (EWEC 2010)

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