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Starting torque improvement using J-shaped straight-bladed Darrieus vertical axis wind turbine by means of numerical simulation

Author

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  • Zamani, Mahdi
  • Maghrebi, Mohammad Javad
  • Varedi, Seyed Rasoul

Abstract

In this study a 3 kW straight–bladed Darrieus type Vertical Axis Wind Turbine (VAWT) is investigated numerically using OpenFOAM computational fluid dynamic package. The newly proposed J-Shaped profile is used as the blade airfoil in the simulation. The J-Shaped profile is designed by means of eliminating a fraction of pressure side of Du 06-W-200 airfoil. The main purpose of this investigation is the improvement of the VAWT starting torque using J-shaped profile. The power curves for both conventional and J-shaped profiles are calculated and the torque variation is obtained at different azimuth angles. In addition, the vorticity and pressure field surrounding the wind turbine is presented. The results indicate that the performance of turbine is optimized for J-shaped profile which eliminates the pressure side of airfoil from the maximum thickness toward the trailing edge. Moreover, by employing this J-Shaped profile, the wind turbine performance is intensified TSRs and self-starting of turbine is improved.

Suggested Citation

  • Zamani, Mahdi & Maghrebi, Mohammad Javad & Varedi, Seyed Rasoul, 2016. "Starting torque improvement using J-shaped straight-bladed Darrieus vertical axis wind turbine by means of numerical simulation," Renewable Energy, Elsevier, vol. 95(C), pages 109-126.
    • Handle: RePEc:eee:renene:v:95:y:2016:i:c:p:109-126
    DOI: 10.1016/j.renene.2016.03.069
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    References listed on IDEAS

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    1. Tai, Feng-Zhu & Kang, Ki-Weon & Jang, Mi-Hye & Woo, Young-Jin & Lee, Jang-Ho, 2013. "Study on the analysis method for the vertical-axis wind turbines having Darrieus blades," Renewable Energy, Elsevier, vol. 54(C), pages 26-31.
    2. Gupta, R. & Biswas, A. & Sharma, K.K., 2008. "Comparative study of a three-bucket Savonius rotor with a combined three-bucket Savonius–three-bladed Darrieus rotor," Renewable Energy, Elsevier, vol. 33(9), pages 1974-1981.
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