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For design of Floating Offshore Wind Turbines (FOWTs), time domain simulation of the FOWT model for many Design Load Cases (DLCs) is essential. For this purpose, several commercial codes for aero-hydro-elastic-mooring dynamics coupled analysis are under development. In this paper, we attempt to develop such a code using opensource multibody dynamics solver MBDyn. Particular attention is made to use an elastic beam element (beam3) in MBDyn, instead of using linear springs to connect rigid bodies as before. Then, verification of the simulation code and models using MBDyn has been made by comparing with OrcaFlex. The Volturn semi-submersible model is the model used here for comparisons. This tool would be valuable for checking and verifying their FOWT models to be used with commercial codes.

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Development and Verification of a Simulation Tool for Floating Offshore Wind Turbines Using MBDyn

  • 会议论文

  • 发表日期：

    2025年

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  • Tomoaki Utsunomiya,
  • Ryoya Hisamatsu,
  • Takayuki Morifuji,
  • Kodai Uematsu,
  • Riku Wakasa,
  • Hisashi Okubo,
  • Hayami Sato,
  • Takuya Kamijo

摘要

For design of Floating Offshore Wind Turbines (FOWTs), time domain simulation of the FOWT model for many Design Load Cases (DLCs) is essential. For this purpose, several commercial codes for aero-hydro-elastic-mooring dynamics coupled analysis are under development. In this paper, we attempt to develop such a code using opensource multibody dynamics solver MBDyn. Particular attention is made to use an elastic beam element (beam3) in MBDyn, instead of using linear springs to connect rigid bodies as before. Then, verification of the simulation code and models using MBDyn has been made by comparing with OrcaFlex. The Volturn semi-submersible model is the model used here for comparisons. This tool would be valuable for checking and verifying their FOWT models to be used with commercial codes.