Floating offshore wind turbines will be generally deployed in area with strong wind and wave conditions that should be considered in the design phase because of the damages they can cause on the systems. Extreme wave loads on floating turbines are poorly considered so far. The DIMPACT R&D project was set up in 2020 to go further in the definition of specific engineering methods to account for the effect of breaking waves on floating wind turbines. The project has led to the development of a new method to define the sea state design which differs significantly from those used for bottom-fixed offshore wind turbines. A new engineering solution was also developed to estimate non-linear wave loads in coupled numerical models like OpenFAST. It will be referred to in the 2024 update recommended practice of DNV certification body.
The project is coming to an end. The webinar hold on 18 October presented the main results of DIMPACT and illustrated their applicability to the sector.
The preliminary programme was as follows:
- Context of the project and links between the various work packages – Jean-François FILIPOT, France Energies Marines > Video | Slides
- Motion and attitude of floating offshore wind turbine in high seas – Christophe PEYRARD, EDF R&D > Video | Slides
- Wave tank experiment and load severity – Florian HULIN, France Energies Marines, Ifremer and ENSTA Bretagne > Video | Slides
- Hydrodynamics loads on floating wind turbine – Paul RENAUD, France Energies Marines > Video | Slides
- Implementation of engineering methods from DIMPACT project in OpenFAST tool – Camil MATOUG, France Energies Marines > Video | Slides
- Q&A Session – Conclusion > Video | Slides
Photo credit: Saskia 1310 / Pixabay