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A study on the aerodynamics of a floating wind turbine rotor

Author

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  • Farrugia, R.
  • Sant, T.
  • Micallef, D.

Abstract

Understanding the impact of wave induced effects on the aerodynamic performance of Floating Offshore Wind Turbines (FOWTs) is crucial towards developing floating wind turbines cost-effectively to harness wind energy in deep water sites. The complexity of the wake of an FOWT has not yet been fully understood and both experimental together with numerical techniques are essential in this regard. An open source free-wake vortex code was used to determine whether experimentally-observed effects of the wave motions on floating rotor aerodynamics could be reproduced numerically by the lifting line method. From free-wake simulations on a large scale FOWT, complex wake phenomena were observed under the impact of extreme wave conditions. It was found that the difference between the mean power coefficient under platform surge conditions and the steady power coefficient depends on platform surge frequency, surge amplitude and the rotor operating conditions. Using the results from the free-wake vortex simulations, an analysis of a number of wind turbine wake characteristics under floating conditions was carried out in order to identify possible reasons behind the increase in the aerodynamic torque and thrust variations with tip speed ratio.

Suggested Citation

  • Farrugia, R. & Sant, T. & Micallef, D., 2016. "A study on the aerodynamics of a floating wind turbine rotor," Renewable Energy, Elsevier, vol. 86(C), pages 770-784.
    • Handle: RePEc:eee:renene:v:86:y:2016:i:c:p:770-784
    DOI: 10.1016/j.renene.2015.08.063
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    References listed on IDEAS

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    1. Thomas Sebastian & Matthew Lackner, 2012. "Analysis of the Induction and Wake Evolution of an Offshore Floating Wind Turbine," Energies, MDPI, vol. 5(4), pages 1-33, April.
    2. Farrugia, R. & Sant, T. & Micallef, D., 2014. "Investigating the aerodynamic performance of a model offshore floating wind turbine," Renewable Energy, Elsevier, vol. 70(C), pages 24-30.
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    Cited by:

    1. Li, Qing'an & Kamada, Yasunari & Maeda, Takao & Murata, Junsuke & Iida, Kohei & Okumura, Yuta, 2016. "Fundamental study on aerodynamic force of floating offshore wind turbine with cyclic pitch mechanism," Energy, Elsevier, vol. 99(C), pages 20-31.
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    3. Greco, Luca & Testa, Claudio, 2021. "Wind turbine unsteady aerodynamics and performance by a free-wake panel method," Renewable Energy, Elsevier, vol. 164(C), pages 444-459.
    4. Tao Luo & De Tian & Ruoyu Wang & Caicai Liao, 2018. "Stochastic Dynamic Response Analysis of a 10 MW Tension Leg Platform Floating Horizontal Axis Wind Turbine," Energies, MDPI, vol. 11(12), pages 1-24, November.
    5. Fang, Yuan & Li, Gen & Duan, Lei & Han, Zhaolong & Zhao, Yongsheng, 2021. "Effect of surge motion on rotor aerodynamics and wake characteristics of a floating horizontal-axis wind turbine," Energy, Elsevier, vol. 218(C).
    6. Duan, Lei & Sun, Qinghong & He, Zanyang & Li, Gen, 2022. "Wake topology and energy recovery in floating horizontal-axis wind turbines with harmonic surge motion," Energy, Elsevier, vol. 260(C).
    7. Fu, Shifeng & Zhang, Buen & Zheng, Yuan & Chamorro, Leonardo P., 2020. "In-phase and out-of-phase pitch and roll oscillations of model wind turbines within uniform arrays," Applied Energy, Elsevier, vol. 269(C).
    8. Wen, Binrong & Tian, Xinliang & Zhang, Qi & Dong, Xingjian & Peng, Zhike & Zhang, Wenming & Wei, Kexiang, 2019. "Wind shear effect induced by the platform pitch motion of a spar-type floating wind turbine," Renewable Energy, Elsevier, vol. 135(C), pages 1186-1199.
    9. Wen, Binrong & Tian, Xinliang & Dong, Xingjian & Peng, Zhike & Zhang, Wenming, 2017. "Influences of surge motion on the power and thrust characteristics of an offshore floating wind turbine," Energy, Elsevier, vol. 141(C), pages 2054-2068.
    10. Li, Liang & Gao, Yan & Hu, Zhiqiang & Yuan, Zhiming & Day, Sandy & Li, Haoran, 2018. "Model test research of a semisubmersible floating wind turbine with an improved deficient thrust force correction approach," Renewable Energy, Elsevier, vol. 119(C), pages 95-105.
    11. Sun, Qinghong & Li, Gen & Duan, Lei & He, Zanyang, 2023. "The coupling of tower-shadow effect and surge motion intensifies aerodynamic load variability in downwind floating offshore wind turbines," Energy, Elsevier, vol. 282(C).
    12. Wen, Binrong & Dong, Xingjian & Tian, Xinliang & Peng, Zhike & Zhang, Wenming & Wei, Kexiang, 2018. "The power performance of an offshore floating wind turbine in platform pitching motion," Energy, Elsevier, vol. 154(C), pages 508-521.
    13. Wang, Xinbao & Cai, Chang & Cai, Shang-Gui & Wang, Tengyuan & Wang, Zekun & Song, Juanjuan & Rong, Xiaomin & Li, Qing'an, 2023. "A review of aerodynamic and wake characteristics of floating offshore wind turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 175(C).
    14. Micallef, Daniel & Rezaeiha, Abdolrahim, 2021. "Floating offshore wind turbine aerodynamics: Trends and future challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    15. Rezaeiha, Abdolrahim & Micallef, Daniel, 2021. "Wake interactions of two tandem floating offshore wind turbines: CFD analysis using actuator disc model," Renewable Energy, Elsevier, vol. 179(C), pages 859-876.
    16. Kyle, Ryan & Früh, Wolf-Gerrit, 2022. "The transitional states of a floating wind turbine during high levels of surge," Renewable Energy, Elsevier, vol. 200(C), pages 1469-1489.
    17. Kyle, Ryan & Lee, Yeaw Chu & Früh, Wolf-Gerrit, 2020. "Propeller and vortex ring state for floating offshore wind turbines during surge," Renewable Energy, Elsevier, vol. 155(C), pages 645-657.
    18. Yang, J.J. & He, E.M., 2020. "Coupled modeling and structural vibration control for floating offshore wind turbine," Renewable Energy, Elsevier, vol. 157(C), pages 678-694.
    19. Wen, Binrong & Tian, Xinliang & Dong, Xingjian & Peng, Zhike & Zhang, Wenming & Wei, Kexiang, 2019. "A numerical study on the angle of attack to the blade of a horizontal-axis offshore floating wind turbine under static and dynamic yawed conditions," Energy, Elsevier, vol. 168(C), pages 1138-1156.
    20. Lerch, Markus & De-Prada-Gil, Mikel & Molins, Climent, 2019. "The influence of different wind and wave conditions on the energy yield and downtime of a Spar-buoy floating wind turbine," Renewable Energy, Elsevier, vol. 136(C), pages 1-14.
    21. Chen, Ziwen & Wang, Xiaodong & Guo, Yize & Kang, Shun, 2021. "Numerical analysis of unsteady aerodynamic performance of floating offshore wind turbine under platform surge and pitch motions," Renewable Energy, Elsevier, vol. 163(C), pages 1849-1870.
    22. Fu, Shifeng & Jin, Yaqing & Zheng, Yuan & Chamorro, Leonardo P., 2019. "Wake and power fluctuations of a model wind turbine subjected to pitch and roll oscillations," Applied Energy, Elsevier, vol. 253(C), pages 1-1.

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