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Utilizing the Taguchi Method to Optimize Rotor Blade Geometry for Improved Power Output in Ducted Micro Horizontal-Axis Wind Turbines

Author

Listed:
  • Kwan Ouyang

    (Department of Aerospace Engineering, Tamkang University, No.151, Yingzhuan Rd., Tamsui Dist., New Taipei City 251301, Taiwan)

  • Tzeng-Yuan Chen

    (Department of Aerospace Engineering, Tamkang University, No.151, Yingzhuan Rd., Tamsui Dist., New Taipei City 251301, Taiwan)

  • Jun-Jie You

    (Department of Aerospace Engineering, Tamkang University, No.151, Yingzhuan Rd., Tamsui Dist., New Taipei City 251301, Taiwan)

Abstract

This numerical study utilized the Taguchi method to systematically optimize the blade geometry of a ducted micro horizontal-axis wind turbine (HAWT) for moving vehicles to enhance the output power coefficient. Three geometric parameters of the rotor, namely, the number of blades, rotor solidity, and blade pitch angle, were investigated. The optimum parameter design includes eight blades, rotor solidity of 60%, and a pitch angle of 30°, where the blade pitch angle had the most significant effect on the rotor performance. This result confirms that high rotor solidity is more suitable for micro HAWT. The C P,max value achieved with the optimum geometry was 0.432, which was 39.4% higher than that achieved with the worst blade geometry. The aerodynamic characteristics of this wind turbine were also investigated. Compared with the worst blade geometry, the rotor with the optimum blade geometry drew more airflow into the duct and exhibited a higher C P,max due to a greater pressure difference between the windward and leeward sides of the blades. The optimum blade geometry achieved a C T,max of 0.43, which was 38.7% higher than the worst blade geometry. The investigated untwisted blades exhibited low torque near their tips; therefore, the use of twisted blades is recommended for further increasing the torque generated at the blade tip and thus the turbine’s output power. This study facilitates insight into blade geometry effects on rotor performance and helps improve wind energy efficiency, contributing to sustainable development goals (SDGs) like SDG 7 (affordable and clean energy).

Suggested Citation

  • Kwan Ouyang & Tzeng-Yuan Chen & Jun-Jie You, 2024. "Utilizing the Taguchi Method to Optimize Rotor Blade Geometry for Improved Power Output in Ducted Micro Horizontal-Axis Wind Turbines," Sustainability, MDPI, vol. 16(11), pages 1-22, May.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:11:p:4692-:d:1406235
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    References listed on IDEAS

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    1. Eslam S. Abdelghany & Hesham H. Sarhan & Raed Alahmadi & Mohamed B. Farghaly, 2023. "Study the Effect of Winglet Height Length on the Aerodynamic Performance of Horizontal Axis Wind Turbines Using Computational Investigation," Energies, MDPI, vol. 16(13), pages 1-20, July.
    2. Mayer, C & Bechly, M.E & Hampsey, M & Wood, D.H, 2001. "The starting behaviour of a small horizontal-axis wind turbine," Renewable Energy, Elsevier, vol. 22(1), pages 411-417.
    3. Ahmadi Asl, Hamid & Kamali Monfared, Reza & Rad, Manouchehr, 2017. "Experimental investigation of blade number and design effects for a ducted wind turbine," Renewable Energy, Elsevier, vol. 105(C), pages 334-343.
    4. Rahmatian, Mohammad Ali & Nazarian Shahrbabaki, Amin & Moeini, Seyed Peyman, 2023. "Single-objective optimization design of convergent-divergent ducts of ducted wind turbine using RSM and GA, to increase power coefficient of a small-scale horizontal axis wind turbine," Energy, Elsevier, vol. 269(C).
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    1. Beytullah Erdoğan & Güneyhan Taşkaya, 2025. "Optimization of NACA 6412 Using Taguchi Method and Computational Fluid Dynamics Analysis," Sustainability, MDPI, vol. 17(13), pages 1-15, June.

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