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Effects of stator vanes on power coefficients of a zephyr vertical axis wind turbine

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  • Pope, K.
  • Rodrigues, V.
  • Doyle, R.
  • Tsopelas, A.
  • Gravelsins, R.
  • Naterer, G.F.
  • Tsang, E.

Abstract

In this paper, numerical and experimental studies are presented to determine the operating performance and power output from a vertical axis wind turbine (VAWT). A k-ɛ turbulence model is used to perform the transient simulations. The 3-D numerical predictions are based on the time averaged Spalart-Allmaras equations. A case study is performed for varying VAWT stator vane (tab) geometries of a Zephyr vertical axis wind turbine. The mean velocity is used to predict the time averaged variations of the power coefficient and power output. Power coefficients predicted by the numerical models are compared for different turbine geometries. The predictive capabilities of the numerical model are verified by past experimental data, as well as wind tunnel experiments in the current paper, to compare two particular geometric designs. The numerical results examine the turbine's performance at constant and variable rotor velocities. The effects of stator vanes on the turbine's power output are presented and discussed.

Suggested Citation

  • Pope, K. & Rodrigues, V. & Doyle, R. & Tsopelas, A. & Gravelsins, R. & Naterer, G.F. & Tsang, E., 2010. "Effects of stator vanes on power coefficients of a zephyr vertical axis wind turbine," Renewable Energy, Elsevier, vol. 35(5), pages 1043-1051.
    • Handle: RePEc:eee:renene:v:35:y:2010:i:5:p:1043-1051
    DOI: 10.1016/j.renene.2009.10.012
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    References listed on IDEAS

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    1. Rohatgi, Janardan & Barbezier, Gil, 1999. "Wind turbulence and atmospheric stability — Their effect on wind turbine output," Renewable Energy, Elsevier, vol. 16(1), pages 908-911.
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    1. McTavish, S. & Feszty, D. & Sankar, T., 2012. "Steady and rotating computational fluid dynamics simulations of a novel vertical axis wind turbine for small-scale power generation," Renewable Energy, Elsevier, vol. 41(C), pages 171-179.
    2. Thé, Jesse & Yu, Hesheng, 2017. "A critical review on the simulations of wind turbine aerodynamics focusing on hybrid RANS-LES methods," Energy, Elsevier, vol. 138(C), pages 257-289.
    3. Wilberforce, Tabbi & Alaswad, Abed, 2023. "Performance analysis of a vertical axis wind turbine using computational fluid dynamics," Energy, Elsevier, vol. 263(PE).
    4. Wong, Kok Hoe & Chong, Wen Tong & Sukiman, Nazatul Liana & Poh, Sin Chew & Shiah, Yui-Chuin & Wang, Chin-Tsan, 2017. "Performance enhancements on vertical axis wind turbines using flow augmentation systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 904-921.
    5. Jaohindy, Placide & McTavish, Sean & Garde, François & Bastide, Alain, 2013. "An analysis of the transient forces acting on Savonius rotors with different aspect ratios," Renewable Energy, Elsevier, vol. 55(C), pages 286-295.
    6. Roy, Sukanta & Saha, Ujjwal K., 2013. "Review on the numerical investigations into the design and development of Savonius wind rotors," Renewable and Sustainable Energy Reviews, Elsevier, vol. 24(C), pages 73-83.
    7. Aslam Bhutta, Muhammad Mahmood & Hayat, Nasir & Farooq, Ahmed Uzair & Ali, Zain & Jamil, Sh. Rehan & Hussain, Zahid, 2012. "Vertical axis wind turbine – A review of various configurations and design techniques," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(4), pages 1926-1939.
    8. Zahra Sefidgar & Amir Ahmadi Joneidi & Ahmad Arabkoohsar, 2023. "A Comprehensive Review on Development and Applications of Cross-Flow Wind Turbines," Sustainability, MDPI, vol. 15(5), pages 1-39, March.
    9. Rolland, S.A. & Thatcher, M. & Newton, W. & Williams, A.J. & Croft, T.N. & Gethin, D.T. & Cross, M., 2013. "Benchmark experiments for simulations of a vertical axis wind turbine," Applied Energy, Elsevier, vol. 111(C), pages 1183-1194.
    10. Andrea Alaimo & Antonio Esposito & Alberto Milazzo & Calogero Orlando & Flavio Trentacosti, 2013. "Slotted Blades Savonius Wind Turbine Analysis by CFD," Energies, MDPI, vol. 6(12), pages 1-17, December.
    11. Chong, Wen-Tong & Muzammil, Wan Khairul & Ong, Hwai-Chyuan & Sopian, Kamaruzzaman & Gwani, Mohammed & Fazlizan, Ahmad & Poh, Sin-Chew, 2019. "Performance analysis of the deflector integrated cross axis wind turbine," Renewable Energy, Elsevier, vol. 138(C), pages 675-690.
    12. Grönman, Aki & Tiainen, Jonna & Jaatinen-Värri, Ahti, 2019. "Experimental and analytical analysis of vaned savonius turbine performance under different operating conditions," Applied Energy, Elsevier, vol. 250(C), pages 864-872.
    13. Hassanzadeh, Reza & Yaakob, Omar bin & Taheri, Mohammad Mahdi & Hosseinzadeh, Mehdi & Ahmed, Yasser M., 2018. "An innovative configuration for new marine current turbine," Renewable Energy, Elsevier, vol. 120(C), pages 413-422.
    14. Grönman, Aki & Backman, Jari & Hansen-Haug, Markus & Laaksonen, Mikko & Alkki, Markku & Aura, Pekka, 2018. "Experimental and numerical analysis of vaned wind turbine performance and flow phenomena," Energy, Elsevier, vol. 159(C), pages 827-841.
    15. Li, Qing’an & Maeda, Takao & Kamada, Yasunari & Murata, Junsuke & Shimizu, Kento & Ogasawara, Tatsuhiko & Nakai, Alisa & Kasuya, Takuji, 2016. "Effect of solidity on aerodynamic forces around straight-bladed vertical axis wind turbine by wind tunnel experiments (depending on number of blades)," Renewable Energy, Elsevier, vol. 96(PA), pages 928-939.
    16. 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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    Keywords

    Wind energy; Vertical axis wind turbine;

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