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Fully-coupled time-domain simulations of the response of a floating wind turbine to non-periodic disturbances

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  • Salehyar, Sara
  • Li, Yan
  • Zhu, Qiang

Abstract

The dynamical response of a spar-buoy-based floating wind turbine to non-periodic disturbances is studied through a coupled aero-hydro-elastic numerical model. This methodology is characterized by a fully-nonlinear algorithm of the mooring cables, an unsteady boundary-element model for wind-blade interactions, and a time-domain boundary-element model for wave-body interactions. This model is applied to study dynamics of a 5 MW floating turbine. Through relaxation tests, we demonstrate that there is relatively small damping effect in the pitch direction to dissipate vibrations caused by disturbances, even if the aerodynamic damping effects on the rotating blades are accounted for. On the other hand, when viscous damping is included the dissipation effect in pitch is significantly increased. Furthermore, by using the coupled model we examined the time-dependent responses of this 5 MW system to a wave generated by a pulsating pressure on the free surface. The wave loading, platform movements, and wave field around the system have all been investigated. The focus of the analysis was to investigate the ability of the system to recover to the equilibrium position after being disturbed.

Suggested Citation

  • Salehyar, Sara & Li, Yan & Zhu, Qiang, 2017. "Fully-coupled time-domain simulations of the response of a floating wind turbine to non-periodic disturbances," Renewable Energy, Elsevier, vol. 111(C), pages 214-226.
    • Handle: RePEc:eee:renene:v:111:y:2017:i:c:p:214-226
    DOI: 10.1016/j.renene.2017.04.017
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    Citations

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    Cited by:

    1. Baolong Liu & Jianxing Yu, 2022. "Dynamic Response of SPAR-Type Floating Offshore Wind Turbine under Wave Group Scenarios," Energies, MDPI, vol. 15(13), pages 1-18, July.
    2. Pei Zhang & Shugeng Yang & Yan Li & Jiayang Gu & Zhiqiang Hu & Ruoyu Zhang & Yougang Tang, 2020. "Dynamic Response of Articulated Offshore Wind Turbines under Different Water Depths," Energies, MDPI, vol. 13(11), pages 1-20, June.
    3. Yan Li & Liqin Liu & Ying Guo & Wanru Deng, 2022. "Numerical Prediction on the Dynamic Response of a Helical Floating Vertical Axis Wind Turbine Based on an Aero-Hydro-Mooring-Control Coupled Model," Energies, MDPI, vol. 15(10), pages 1-21, May.
    4. Su, Jie & Li, Yu & Chen, Yaoran & Han, Zhaolong & Zhou, Dai & Zhao, Yongsheng & Bao, Yan, 2021. "Aerodynamic performance assessment of φ-type vertical axis wind turbine under pitch motion," Energy, Elsevier, vol. 225(C).
    5. 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.

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