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CFD-Based J-Shaped Blade Design Improvement for Vertical Axis Wind Turbines

Author

Listed:
  • Antonio García Auyanet

    (Energy & Sustainability, Cranfield University, Cranfield MK43 0AL, UK)

  • Rangga E. Santoso

    (Energy & Sustainability, Cranfield University, Cranfield MK43 0AL, UK)

  • Hrishikesh Mohan

    (Energy & Sustainability, Cranfield University, Cranfield MK43 0AL, UK)

  • Sanvay S. Rathore

    (Energy & Sustainability, Cranfield University, Cranfield MK43 0AL, UK)

  • Debapriya Chakraborty

    (Energy & Sustainability, Cranfield University, Cranfield MK43 0AL, UK)

  • Patrick G. Verdin

    (Energy & Sustainability, Cranfield University, Cranfield MK43 0AL, UK)

Abstract

The need for an increase in energy harvesting has led to novel ideas and designs to extract more power from wind. One innovative solution is through the use of J-shaped blades for Darrieus vertical axis wind turbines (VAWTs), which is based on the removal of a portion of a conventional blade, either on the pressure or suction side. Although improvements in the self-starting capabilities of VAWTs have been reported when using such blades, the literature only studied hollow blades, showing a hair-like structure. This work numerically investigates six different J-shaped designs. A turbine comprising NACA0015-based blades forms the base case and is used to evaluate the 2D numerical models. Results show that blades with an external cut systematically outperform those designed with an internal cut. In addition, all proposed cut-based designs are shown to improve the starting torque of the turbine, reaching a 135% increase compared to the base model.

Suggested Citation

  • Antonio García Auyanet & Rangga E. Santoso & Hrishikesh Mohan & Sanvay S. Rathore & Debapriya Chakraborty & Patrick G. Verdin, 2022. "CFD-Based J-Shaped Blade Design Improvement for Vertical Axis Wind Turbines," Sustainability, MDPI, vol. 14(22), pages 1-16, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:22:p:15343-:d:976970
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    References listed on IDEAS

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    Cited by:

    1. Farzadi, Ramin & Zanj, Amir & Bazargan, Majid, 2024. "Effect of baffles on efficiency of darrieus vertical axis wind turbines equipped with J-type blades," Energy, Elsevier, vol. 305(C).
    2. Farzadi, Ramin & Bazargan, Majid, 2023. "3D numerical simulation of the Darrieus vertical axis wind turbine with J-type and straight blades under various operating conditions including self-starting mode," Energy, Elsevier, vol. 278(PB).

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    More about this item

    Keywords

    blade optimization; VAWT; starting torque; J-shape; NACA0015; CFD; k - ω;
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