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Investigating the aerodynamic performance of a model offshore floating wind turbine

Author

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

Abstract

Understanding the impact of wave-induced dynamic effects on the aerodynamic performance of Offshore Floating Wind Turbines (OFWTs) is crucial towards developing cost-effective floating wind turbines to harness wind energy in deep water sites. The complexity of the wake of an OFWT has not yet been fully understood. Measurements and numerical simulations are essential. An experiment to investigate the aerodynamics of a model OFWT was undertaken at the University of Malta. Established experimental techniques used to analyse fixed HAWTs were applied and modified for the floating turbine condition. The effects of wave induced motions on the rotor aerodynamic variables were analysed in detail. An open source free-wake vortex code was also used to examine whether certain phenomena observed in the experiments could be reproduced numerically by the lifting line method. Results from hot wire measurements and free-wake vortex simulations have shown that for OFWTs surge-induced torque fluctuations are evident. At high λ a discrepancy in the mean CP between the fixed and floating conditions was found from measurements and numerical simulations.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:70:y:2014:i:c:p:24-30
    DOI: 10.1016/j.renene.2013.12.043
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    References listed on IDEAS

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    3. Sun, Xiaojing & Huang, Diangui & Wu, Guoqing, 2012. "The current state of offshore wind energy technology development," Energy, Elsevier, vol. 41(1), pages 298-312.
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    4. 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.
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    9. Fu, Shifeng & Li, Zheng & Zhu, Weijun & Han, Xingxing & Liang, Xiaoling & Yang, Hua & Shen, Wenzhong, 2023. "Study on aerodynamic performance and wake characteristics of a floating offshore wind turbine under pitch motion," Renewable Energy, Elsevier, vol. 205(C), pages 317-325.
    10. 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).
    11. Astariz, S. & Perez-Collazo, C. & Abanades, J. & Iglesias, G., 2015. "Towards the optimal design of a co-located wind-wave farm," Energy, Elsevier, vol. 84(C), pages 15-24.
    12. Xiaoling Liang & Zheng Li & Xingxing Han & Shifeng Fu & Weijun Zhu & Tianmei Pu & Zhenye Sun & Hua Yang & Wenzhong Shen, 2024. "Study on Aerodynamic Performance and Wake Characteristics of a Floating Offshore Wind Turbine in Wind–Wave Coupling Field," Sustainability, MDPI, vol. 16(13), pages 1-20, June.
    13. Micallef, Daniel & Sant, Tonio, 2015. "Loading effects on floating offshore horizontal axis wind turbines in surge motion," Renewable Energy, Elsevier, vol. 83(C), pages 737-748.
    14. Moutaz Elgammi & Tonio Sant, 2016. "Combining Unsteady Blade Pressure Measurements and a Free-Wake Vortex Model to Investigate the Cycle-to-Cycle Variations in Wind Turbine Aerodynamic Blade Loads in Yaw," Energies, MDPI, vol. 9(6), pages 1-27, June.
    15. Chen, Guang & Liang, Xi-Feng & Li, Xiao-Bai, 2022. "Modelling of wake dynamics and instabilities of a floating horizontal-axis wind turbine under surge motion," Energy, Elsevier, vol. 239(PB).
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    18. 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).

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