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Performance analysis of vertical-axis-wind-turbine blade with modified trailing edge through computational fluid dynamics

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  • Lin, San-Yih
  • Lin, Yang-You
  • Bai, Chi-Jeng
  • Wang, Wei-Cheng

Abstract

The design of turbine blades is a critical issue in the performance of vertical-axis wind-turbines (VAWTs). In a previous study, it is discovered that a loss of thrust in VAWT blades with a wave-like leading edge can be attributed primarily to vortex distribution. This finding prompted us to apply the wave-like blade design to the trailing edge rather than the leading edge. In this study, computational fluid dynamics was used to observe the flow field on straight and tubercle blades in order to predict the resulting thrust and power performance. Increasing the amplitude and wavelength of the tubercle was shown to increase the maximum thrust by as much as 2.31% and the power coefficient by 16.4%, compared to a straight blade. Furthermore, the overall and maximum thrust performance of blades with a modified trailing edge was shown to exceed those of blades with a wave-like leading edge, due to a shift in the location of the vortices by the induced flow.

Suggested Citation

  • Lin, San-Yih & Lin, Yang-You & Bai, Chi-Jeng & Wang, Wei-Cheng, 2016. "Performance analysis of vertical-axis-wind-turbine blade with modified trailing edge through computational fluid dynamics," Renewable Energy, Elsevier, vol. 99(C), pages 654-662.
    • Handle: RePEc:eee:renene:v:99:y:2016:i:c:p:654-662
    DOI: 10.1016/j.renene.2016.07.050
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    References listed on IDEAS

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    Cited by:

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    3. Abdalrahman, Gebreel & Melek, William & Lien, Fue-Sang, 2017. "Pitch angle control for a small-scale Darrieus vertical axis wind turbine with straight blades (H-Type VAWT)," Renewable Energy, Elsevier, vol. 114(PB), pages 1353-1362.
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    5. Rezaeiha, Abdolrahim & Kalkman, Ivo & Blocken, Bert, 2017. "Effect of pitch angle on power performance and aerodynamics of a vertical axis wind turbine," Applied Energy, Elsevier, vol. 197(C), pages 132-150.
    6. Sengupta, A.R. & Biswas, A. & Gupta, R., 2019. "Comparison of low wind speed aerodynamics of unsymmetrical blade H-Darrieus rotors-blade camber and curvature signatures for performance improvement," Renewable Energy, Elsevier, vol. 139(C), pages 1412-1427.
    7. Zhong, Junwei & Li, Jingyin & Guo, Penghua & Wang, Yu, 2019. "Dynamic stall control on a vertical axis wind turbine aerofoil using leading-edge rod," Energy, Elsevier, vol. 174(C), pages 246-260.
    8. Chenguang Song & Guoqing Wu & Weinan Zhu & Xudong Zhang & Jicong Zhao, 2019. "Numerical Investigation on the Effects of Airfoil Leading Edge Radius on the Aerodynamic Performance of H-Rotor Darrieus Vertical Axis Wind Turbine," Energies, MDPI, vol. 12(19), pages 1-14, October.
    9. Zhu, Haitian & Hao, Wenxing & Li, Chun & Ding, Qinwei & Wu, Baihui, 2018. "A critical study on passive flow control techniques for straight-bladed vertical axis wind turbine," Energy, Elsevier, vol. 165(PA), pages 12-25.

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