Dynamic Response of an Offshore Floating Wind Turbine at Accidental Limit States—Mooring Failure Event

Ray Yeng Yang, Tzu Ching Chuang, Chenyu Zhao, Lars Johanning

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This paper investigates the dynamic response of a fully nonlinear model of a DeepCWind floating offshore wind turbine (FOWT) after one of its three-catenary mooring systems is broken. The drift area of the platform, pitch motion of the wind turbine, and tension on the two ends of the mooring line are the main dynamic response foci; in addition, a single mathematical formula is pro-vided in this study to predict the maximum drift in surge direction. After the platform reaches the new equilibrium position maintained by the remaining two mooring lines, the tower pitch exceeds 20 degrees. The tension change is closely related to the drift motion, necessitating an increase in the minimum breaking load (MBL) of the mooring line components. The mathematical forecast of the maximum surge shows good agreement with the numerical results, even with different water depths.

Original languageEnglish
Article number1525
JournalApplied Sciences (Switzerland)
Volume12
Issue number3
DOIs
Publication statusPublished - 2022 Feb 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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