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Computational Fluid Dynamics Prediction of a Modified Savonius Wind Turbine with Novel Blade Shapes

Author

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  • Wenlong Tian

    (School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China
    Southeast National Marine Renewable Energy Center, Florida Atlantic University, Boca Raton, FL 33431, USA)

  • Baowei Song

    (School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China)

  • James H. VanZwieten

    (Southeast National Marine Renewable Energy Center, Florida Atlantic University, Boca Raton, FL 33431, USA)

  • Parakram Pyakurel

    (Southeast National Marine Renewable Energy Center, Florida Atlantic University, Boca Raton, FL 33431, USA)

Abstract

The Savonius wind turbine is a type of vertical axis wind turbine (VAWTs) that is simply composed of two or three arc-type blades which can generate power even under poor wind conditions. A modified Savonius wind turbine with novel blade shapes is introduced with the aim of increasing the power coefficient of the turbine. The effect of blade fullness, which is a main shape parameter of the blade, on the power production of a two-bladed Savonius wind turbine is investigated using transient computational fluid dynamics (CFD). Simulations are based on the Reynolds Averaged Navier-Stokes (RANS) equations with a renormalization group turbulent model. This numerical method is validated with existing experimental data and then utilized to quantify the performance of design variants. Results quantify the relationship between blade fullness and turbine performance with a blade fullness of 1 resulting in the highest coefficient of power, 0.2573. This power coefficient is 10.98% higher than a conventional Savonius turbine.

Suggested Citation

  • Wenlong Tian & Baowei Song & James H. VanZwieten & Parakram Pyakurel, 2015. "Computational Fluid Dynamics Prediction of a Modified Savonius Wind Turbine with Novel Blade Shapes," Energies, MDPI, vol. 8(8), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:8:p:7915-7929:d:53429
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    References listed on IDEAS

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    Cited by:

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