Numerical Study of Wake Interactions between Two Floating Offshore Wind Turbines

Yang Huang, Decheng Wan, Changhong Hu

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

1 Citation (Scopus)

Abstract

The wake interaction between floating offshore wind turbines (FOWTs) has a significant effect on the FOWT's power output, system dynamics responses and structural loadings. To better understand the wake interaction phenomenon in floating wind farms, fully coupled simulations considering the coupling effects between the wind turbine, floating platform and mooring system for FOWTs are necessary. In the present paper, the unsteady actuator line model (UALM) is embedded into in-house CFD solver naoe-FOAM-SJTU to establish a fully coupled CFD analysis tool named FOWT-UALM-SJTU for numerical simulations of FOWTs. Coupled aero-hydrodynamic simulations of two OC3 Hywindspar FOWT models in tandem layout under shear wind and regular wave conditions are performed using this tool. The unsteady aerodynamics of wind turbines are given by the UALM, and the hydrodynamic responses of floating platforms and mooring tensions are predicted by naoe-FOAM-SJTU. From the simulations, unsteady aerodynamic characteristics can be extracted including the rotor power and thrust as well as detailed wake flow information, and hydrodynamic responses such as the six-degree-of-freedom motions and mooring tensions are also available. Moreover, the influence of wake interaction on the performance of FOWTs is studied. It can be found that strong wake interaction phenomenon is observed and the unsteady aero-hydrodynamic responses of downstream FOWT system are greatly affected by the wake interaction.

Original languageEnglish
Title of host publicationProceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
PublisherInternational Society of Offshore and Polar Engineers
Pages541-548
Number of pages8
ISBN (Print)9781880653876
Publication statusPublished - Jan 1 2018
Event28th International Ocean and Polar Engineering Conference, ISOPE 2018 - Sapporo, Japan
Duration: Jun 10 2018Jun 15 2018

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2018-June
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other28th International Ocean and Polar Engineering Conference, ISOPE 2018
CountryJapan
CitySapporo
Period6/10/186/15/18

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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  • Cite this

    Huang, Y., Wan, D., & Hu, C. (2018). Numerical Study of Wake Interactions between Two Floating Offshore Wind Turbines. In Proceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018 (pp. 541-548). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2018-June). International Society of Offshore and Polar Engineers.