Dynamic Modelling of HiveWind Floating Wind Substructure in OpenFAST

Roger Bergua, Inaki Zabala, Alvaro Gomez, Lu Wang, Oier Pena, Jason Jonkman, Jorge Pena

Research output: NRELPresentation

Abstract

Current aero-elastic modes tend to consider the wind turbine floating substructures as rigid. However, the new generation of offshore wind platforms are leaner, less rigid. The OpenFAST code has been updated to consider the flexibility of the floating substructure. This presentation shows how a numerical model of the HiveWind design was created within OpenFAST as well as some verifications performed. When comparing the flexible model to a simplified rigid model (previous state-of-the-art), there are some significant differences in key performance indicators. The new flexibility capability within OpenFAST allows to calculate ultimate and fatigue loads within the floating substructure, allowing for the development of more economical designs.
Original languageAmerican English
Number of pages47
StatePublished - 2024

Publication series

NamePresented at the North American Wind Energy Academy (NAWEA)/WindTech 2024 Conference, 30 October - 1 November 2024, New Brunswick, New Jersey

NREL Publication Number

  • NREL/PR-5000-91769

Keywords

  • flexibility
  • HiveWind
  • OpenFAST
  • SENER
  • SubDyn

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