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Hydrodynamic response of a stepped-spar floating wind turbine: Numerical modelling and tank testing

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  • Sethuraman, Latha
  • Venugopal, Vengatesan

Abstract

The hydrodynamic responses of a floating spar wind turbine under regular and irregular waves are measured by experimental techniques and the results are validated using the industry standard time-domain modelling tool, OrcaFlex. A 1:100 scale model is built with four mooring lines and tested in a wave tank for various wave conditions. The surge, heave and pitch motions of the spar model are measured using an optical tracking system both at its centre of mass and nacelle locations. The same motions are also simulated numerically using OrcaFlex under identical wave conditions. The measured hydrodynamic responses are evaluated as Response Amplitude Operator (RAO) and compared with numerical simulations. The results show a very good agreement in RAO between the experiments and numerical simulations. Comparison with existing literature for similar spar configuration indicates that the present study better captures the non-linearities from the mooring lines and the four-point mooring configuration is found to offer significant reduction in surge motions.

Suggested Citation

  • Sethuraman, Latha & Venugopal, Vengatesan, 2013. "Hydrodynamic response of a stepped-spar floating wind turbine: Numerical modelling and tank testing," Renewable Energy, Elsevier, vol. 52(C), pages 160-174.
    • Handle: RePEc:eee:renene:v:52:y:2013:i:c:p:160-174
    DOI: 10.1016/j.renene.2012.09.063
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    Citations

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    Cited by:

    1. Li, Yan & Zhu, Qiang & Liu, Liqin & Tang, Yougang, 2018. "Transient response of a SPAR-type floating offshore wind turbine with fractured mooring lines," Renewable Energy, Elsevier, vol. 122(C), pages 576-588.
    2. 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.
    3. Cian J. Desmond & Jan-Christoph Hinrichs & Jimmy Murphy, 2019. "Uncertainty in the Physical Testing of Floating Wind Energy Platforms’ Accuracy versus Precision," Energies, MDPI, vol. 12(3), pages 1-14, January.
    4. Karimirad, Madjid & Michailides, Constantine, 2015. "V-shaped semisubmersible offshore wind turbine: An alternative concept for offshore wind technology," Renewable Energy, Elsevier, vol. 83(C), pages 126-143.
    5. Ishihara, Takeshi & Zhang, Shining, 2019. "Prediction of dynamic response of semi-submersible floating offshore wind turbine using augmented Morison's equation with frequency dependent hydrodynamic coefficients," Renewable Energy, Elsevier, vol. 131(C), pages 1186-1207.
    6. Carlo Ruzzo & Giuseppe Failla & Maurizio Collu & Vincenzo Nava & Vincenzo Fiamma & Felice Arena, 2016. "Operational Modal Analysis of a Spar-Type Floating Platform Using Frequency Domain Decomposition Method," Energies, MDPI, vol. 9(11), pages 1-15, October.
    7. Sethuraman, Latha & Venugopal, Vengatesan & Zavvos, Aristeidis & Mueller, Markus, 2014. "Structural integrity of a direct-drive generator for a floating wind turbine," Renewable Energy, Elsevier, vol. 63(C), pages 597-616.
    8. 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.
    9. Maria Ikhennicheu & Arthur Blanc & Benoat Danglade & Jean-Christophe Gilloteaux, 2022. "OrcaFlex Modelling of a Multi-Body Floating Solar Island Subjected to Waves," Energies, MDPI, vol. 15(23), pages 1-17, December.
    10. Meng, Haoran & Su, Hao & Guo, Jia & Qu, Timing & Lei, Liping, 2022. "Experimental investigation on the power and thrust characteristics of a wind turbine model subjected to surge and sway motions," Renewable Energy, Elsevier, vol. 181(C), pages 1325-1337.
    11. Niccolo Bruschi & Giulio Ferri & Enzo Marino & Claudio Borri, 2020. "Influence of Clumps-Weighted Moorings on a Spar Buoy Offshore Wind Turbine," Energies, MDPI, vol. 13(23), pages 1-14, December.
    12. Tomasicchio, Giuseppe Roberto & D'Alessandro, Felice & Avossa, Alberto Maria & Riefolo, Luigia & Musci, Elena & Ricciardelli, Francesco & Vicinanza, Diego, 2018. "Experimental modelling of the dynamic behaviour of a spar buoy wind turbine," Renewable Energy, Elsevier, vol. 127(C), pages 412-432.
    13. Xiangyuan Zheng & Huadong Zheng & Yu Lei & Yi Li & Wei Li, 2020. "An Offshore Floating Wind–Solar–Aquaculture System: Concept Design and Extreme Response in Survival Conditions," Energies, MDPI, vol. 13(3), pages 1-23, January.
    14. Zeng, Fanxu & Zhang, Ningchuan & Huang, Guoxing & Gu, Qian & He, Meng, 2023. "Dynamic response of floating offshore wind turbines under freak waves with large crest and deep trough," Energy, Elsevier, vol. 278(C).

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