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Blade Dimension Optimization and Performance Analysis of the 2-D Ugrinsky Wind Turbine

Author

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  • Luke Sakamoto

    (Department of Mechanical Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan)

  • Tomohiro Fukui

    (Department of Mechanical Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan)

  • Koji Morinishi

    (Department of Mechanical Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan)

Abstract

With the increasing focus on renewable energy, there is a need to improve the efficiency of vertical-axis wind turbines (VAWTs). The Ugrinsky wind turbine is a type of VAWT, but there are few studies on this turbine. Previous studies have shown that the maximum power coefficient of the Ugrinsky wind turbine reaches 0.170, which is 54.5% higher than that of the Savonius type (0.110), and this turbine maintains a high power coefficient over a wide range of tip speed ratios (TSR). In this study, the dimensions of the two semicircles of the Ugrinsky wind turbine were further optimized to obtain a higher power coefficient. An analysis of the effect of the blade dimensions on the performance was conducted. The flow around the turbine was simulated using the regularized lattice Boltzmann method. The geometry of the turbine was simulated using the virtual flux method for the Cartesian grid. The optimization was conducted in terms of the output power coefficient and the average value of the power coefficient for neighboring TSR to consider the fluctuation of the TSR. This study demonstrates that a closer vortex distance favored the growth of the vortex and improved the power coefficient.

Suggested Citation

  • Luke Sakamoto & Tomohiro Fukui & Koji Morinishi, 2022. "Blade Dimension Optimization and Performance Analysis of the 2-D Ugrinsky Wind Turbine," Energies, MDPI, vol. 15(7), pages 1-14, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2478-:d:781249
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    References listed on IDEAS

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