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Steady and rotating computational fluid dynamics simulations of a novel vertical axis wind turbine for small-scale power generation

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  • McTavish, S.
  • Feszty, D.
  • Sankar, T.

Abstract

A novel vertical axis wind turbine (VAWT) has been developed that consists of several asymmetric vertically-stacked stages. A computational investigation of the torque characteristics of the VAWT has been conducted using the commercial computational fluid dynamics (CFD) software CFdesign 2010. A validation study consisting of steady and rotating simulations was conducted using a Savonius rotor and good agreement was obtained with experimental data. Steady two-dimensional CFD simulations have demonstrated that the new VAWT has similar average static torque characteristics to existing Savonius rotors. Rotating three-dimensional CFD simulations were conducted at several tip speed ratios with a freestream speed of 6 m/s. The predicted dynamic torque generated by the rotor decays more rapidly with increasing tip speed ratio than the torque output of Savonius rotors due to its asymmetric design and the curvature of the outer rotor wall.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:41:y:2012:i:c:p:171-179
    DOI: 10.1016/j.renene.2011.10.018
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    15. Miller, Aaron & Chang, Byungik & Issa, Roy & Chen, Gerald, 2013. "Review of computer-aided numerical simulation in wind energy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 25(C), pages 122-134.
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    19. Reza Norouztabar & Seyed Soheil Mousavi Ajarostaghi & Seyed Sina Mousavi & Payam Nejat & Seyed Saeid Rahimian Koloor & Mohamed Eldessouki, 2022. "On the Performance of a Modified Triple Stack Blade Savonius Wind Turbine as a Function of Geometrical Parameters," Sustainability, MDPI, vol. 14(16), pages 1-26, August.
    20. Kumar, Anuj & Saini, R.P., 2017. "Performance analysis of a Savonius hydrokinetic turbine having twisted blades," Renewable Energy, Elsevier, vol. 108(C), pages 502-522.
    21. Chowdhury, Abdullah Mobin & Akimoto, Hiromichi & Hara, Yutaka, 2016. "Comparative CFD analysis of Vertical Axis Wind Turbine in upright and tilted configuration," Renewable Energy, Elsevier, vol. 85(C), pages 327-337.
    22. Nopem Ariwiyono & Priyo A. Setiawan & Adi W. Husodo & Sudiyono & Anda I. Juniani & Subagio So’im & Projek P. S. Lukitadi & Rini Indarti & Fais Hamzah, 2019. "A Numerical Study Of The Turbulence Model Influence On A Savonius Wind Turbine Performance By Means Of Moving Mesh," Journal of Mechanical Engineering Research & Developments (JMERD), Zibeline International Publishing, vol. 42(3), pages 91-93, May.
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