The dynamic response of floating offshore wind turbine platform in wave-current condition

Xiang Li, Qing Xiao, Enhao Wang, Christophe Peyrard, Rodolfo T. Gonçalves

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
62 Downloads (Pure)

Abstract

In this paper, the fluid–structure interaction of floating offshore wind turbine (FOWT) platforms under complex ocean conditions is investigated using OpenFOAM and in-house developed models. Two types of FOWT platform, i.e., a semi-submersible platform and a barge platform, are studied for their dynamic responses to either wave or current. The results reveal that a semi-submersible platform exhibits larger cross-flow motion and lock-in phenomenon, while a barge platform experiences smaller motion with no significant lock-in within the velocity range examined. The combined wave–current conditions are further studied for the semi-submersible platform, with different angles between wave and current, the current speeds, and wave parameters. Unlike other investigations focusing on colinear wave–current interaction, in which the waves usually mitigate vortex-induced motion (VIM); here, we find that waves might lead to an enhanced VIM with a large angle between current and wave. The evaluation on the interaction effect factor shows that the largest wave height in the lock-in region does not lead to the most dangerous scenario, herein, the largest platform motion. Instead, a smaller wave height with a large wave period can induce even larger motion.
Original languageEnglish
Article number087113
Number of pages38
JournalPhysics of Fluids
Volume35
Issue number8
DOIs
Publication statusPublished - 9 Aug 2023

Keywords

  • wind turbines
  • wave mechanics
  • computational fluid dynamics
  • hydrodynamical interactions
  • oscillating flow

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