Wake interaction between two floating offshore wind turbines with blade deformation

Yang Huang, Qing Xiao, Decheng Wan

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

With the increasing size and flexibility of wind turbine blades, the impacts of blade deformation on the aerodynamic performance of wind turbines are becoming more and more important. To better understand the influence of blade flexibility on the wake interaction of FOWTs, a coupled analysis tool composed of an improved ALM and in-house CFD code based on OpenFOAM is employed to perform numerical simulations for two spar-type FOWTs with a tandem layout under given regular wave and uniform wind conditions. Coupled aero-hydroelastic responses of the floating wind turbine are compared for rigid blades and flexible blades scenarios to examine the impacts of blade deformation on the wake interaction. The variations of aerodynamic loads, wake characteristics, and floating platform dynamics motions’ responses are fully examined. Our results show that the blade deformation of downstream FOWT is smaller than that of upstream FOWT due to the turbine wake. The timemean aerodynamic load coefficients of both upstream and downstream FOWT decrease due to the shape deformation of the blade. Moreover, the wake vortexes are found to be more stable when the blade is flexible.
Original languageEnglish
Title of host publicationProceedings of the ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering
Place of PublicationNew York, New York
Number of pages9
Publication statusPublished - 10 Jun 2022
Event41st International Conference on Ocean, Offshore and Arctic Engineering
- Congress Center Hamburg, Hamburg, Germany
Duration: 5 Jun 202210 Jun 2022
https://event.asme.org/OMAE
https://event.asme.org/OMAE-2022

Conference

Conference41st International Conference on Ocean, Offshore and Arctic Engineering
Abbreviated titleOMAE2022
Country/TerritoryGermany
CityHamburg
Period5/06/2210/06/22
Internet address

Keywords

  • FOWT
  • improved ALM
  • blade deformation
  • aero-hydro-elastic responses
  • wake characteristics
  • CFD

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