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Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower

Author

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  • Takaaki Kono

    (Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan)

  • Satoshi Nebucho

    (Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan)

  • Tetsuya Kogaki

    (National Instiute of Advanced Industrial Science and Technology, Koriyama 963-0298, Japan)

  • Takahiro Kiwata

    (Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan)

  • Shigeo Kimura

    (Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan)

  • Nobuyoshi Komatsu

    (Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan)

Abstract

We have investigated the effects of the rotating blades of an upwind-type three-blade horizontal-axis wind turbine (HAWT) on the basic characteristics of aerodynamic forces acting on its tower by conducting improved delayed detached-eddy simulations (DESs). Three tip-speed ratios were considered for the operating conditions of the HAWT: λ = 3 (low), λ = 6 (optimum), and λ = 10 (high). The diversion of the flow approaching the tower by the rotating blades and the low-pressure region that formed downwind of the blades significantly affected the aerodynamic forces acting on the tower. For example, the azimuth angle around the tower at which the pressure reached a maximum at each height shifted significantly in the direction of the movement of the blade passing the tower because of the diversion of the flow by the blades. Fluctuations in the lift force of the tower were significantly larger than those in its drag force because of the low-pressure region downwind of the blades.

Suggested Citation

  • Takaaki Kono & Satoshi Nebucho & Tetsuya Kogaki & Takahiro Kiwata & Shigeo Kimura & Nobuyoshi Komatsu, 2017. "Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower," Energies, MDPI, vol. 10(1), pages 1-18, January.
  • Handle: RePEc:gam:jeners:v:10:y:2017:i:1:p:121-:d:88251
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    References listed on IDEAS

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    1. Li, Yuwei & Paik, Kwang-Jun & Xing, Tao & Carrica, Pablo M., 2012. "Dynamic overset CFD simulations of wind turbine aerodynamics," Renewable Energy, Elsevier, vol. 37(1), pages 285-298.
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    Cited by:

    1. Antar, E. & Elkhoury, M., 2019. "Parametric sizing optimization process of a casing for a Savonius Vertical Axis Wind Turbine," Renewable Energy, Elsevier, vol. 136(C), pages 127-138.
    2. Subbulakshmi, A. & Verma, Mohit & Keerthana, M. & Sasmal, Saptarshi & Harikrishna, P. & Kapuria, Santosh, 2022. "Recent advances in experimental and numerical methods for dynamic analysis of floating offshore wind turbines — An integrated review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 164(C).

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