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Study on Aerodynamic Characteristics of a Savonius Wind Turbine with a Modified Blade

Author

Listed:
  • Zhongqiu Mu

    (College of Engineering, Northeast Agricultural University, Harbin 150030, China)

  • Guoqiang Tong

    (College of Engineering, Northeast Agricultural University, Harbin 150030, China)

  • Zhenjun Xiao

    (College of Engineering, Northeast Agricultural University, Harbin 150030, China)

  • Qingyue Deng

    (College of Engineering, Northeast Agricultural University, Harbin 150030, China)

  • Fang Feng

    (College of Engineering, Northeast Agricultural University, Harbin 150030, China)

  • Yan Li

    (College of Engineering, Northeast Agricultural University, Harbin 150030, China)

  • Garrel Van Arne

    (Faculty of Engineering Technology, University of Twente, 7500 Enschede, The Netherlands)

Abstract

In order to improve the static start-up problem of Savonius wind turbines, a Savonius wind turbine with a modified blade is proposed. It was obtained by twisting the half-cylindrical blades of the basic Savonius wind turbine by 70°. The aerodynamic performance of the wind turbine before and after the modification was compared. Firstly, the static torque coefficient of two wind turbines at different azimuth angles were obtained by means of three-dimensional numerical simulation. The static flow field around the wind turbine was analyzed. Then, the output power and speed characteristics of a spiral Savonius wind turbine under different incoming wind speeds were evaluated in the wind tunnel. The results show that, compared with the Savonius wind turbine with half-cylindrical blades, the spiral wind turbine could start at any azimuths in one rotation cycle. The reverse torque was eliminated. The static torque coefficient fluctuation range was reduced by 10%. The start-up performance was effectively improved. This investigation could provide guidance for the improvement of start-up characteristics of Savonius wind turbines.

Suggested Citation

  • Zhongqiu Mu & Guoqiang Tong & Zhenjun Xiao & Qingyue Deng & Fang Feng & Yan Li & Garrel Van Arne, 2022. "Study on Aerodynamic Characteristics of a Savonius Wind Turbine with a Modified Blade," Energies, MDPI, vol. 15(18), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:18:p:6661-:d:912942
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    References listed on IDEAS

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    1. Cuevas-Carvajal, N. & Cortes-Ramirez, J.S. & Norato, Julian A. & Hernandez, C. & Montoya-Vallejo, M.F., 2022. "Effect of geometrical parameters on the performance of conventional Savonius VAWT: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).
    2. Guo, Wenfeng & Shen, He & Li, Yan & Feng, Fang & Tagawa, Kotaro, 2021. "Wind tunnel tests of the rime icing characteristics of a straight-bladed vertical axis wind turbine," Renewable Energy, Elsevier, vol. 179(C), pages 116-132.
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    4. Lee, Jae-Hoon & Lee, Young-Tae & Lim, Hee-Chang, 2016. "Effect of twist angle on the performance of Savonius wind turbine," Renewable Energy, Elsevier, vol. 89(C), pages 231-244.
    5. Kyung Chun Kim & Ho Seong Ji & Yoon Kee Kim & Qian Lu & Joon Ho Baek & Rinus Mieremet, 2014. "Experimental and Numerical Study of the Aerodynamic Characteristics of an Archimedes Spiral Wind Turbine Blade," Energies, MDPI, vol. 7(12), pages 1-22, November.
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    Cited by:

    1. Ke Song & Huiting Huan & Yuchi Kang, 2022. "Aerodynamic Performance and Wake Characteristics Analysis of Archimedes Spiral Wind Turbine Rotors with Different Blade Angle," Energies, MDPI, vol. 16(1), pages 1-18, December.
    2. Taimoor Asim & Dharminder Singh & M. Salman Siddiqui & Don McGlinchey, 2022. "Effect of Stator Blades on the Startup Dynamics of a Vertical Axis Wind Turbine," Energies, MDPI, vol. 15(21), pages 1-19, October.

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