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Effect of Wind Tunnel Blockage on the Performance of a Horizontal Axis Wind Turbine with Different Blade Number

Author

Listed:
  • Abdelgalil Eltayesh

    (Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha 13512, Egypt
    These authors contributed equally to this work.)

  • Magdy Bassily Hanna

    (Mechanical Power and Energy Department, Faculty of Engineering, Minia University, Minia 61519, Egypt
    These authors contributed equally to this work.)

  • Francesco Castellani

    (Department of Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy
    These authors contributed equally to this work.)

  • A.S. Huzayyin

    (Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha 13512, Egypt
    These authors contributed equally to this work.)

  • Hesham M. El-Batsh

    (Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha 13512, Egypt
    These authors contributed equally to this work.)

  • Massimiliano Burlando

    (Department of Civil, Chemical, and Environmental Engineering, University of Genoa, Via Montallegro 1, 16145 Genoa, Italy
    These authors contributed equally to this work.)

  • Matteo Becchetti

    (Department of Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia, Italy
    These authors contributed equally to this work.)

Abstract

Blockage corrections for the experimental results obtained for a small-scale wind turbine in a wind tunnel are required in order to estimate how the same turbine would perform in real conditions. The tunnel blockage is defined as the ratio of the wind turbine swept area to the wind tunnel cross-section area. Experimental measurements of the power coefficient were performed on a horizontal-axis wind turbine with two rotors of diameter equal to 2 m and different numbers of blades, namely three and five. Measurements were carried out for different tip speed ratios in the closed circuit open test section wind tunnel of the University of Perugia (Italy). The obtained experimental results were compared with the numerical ones carried out in free conditions by using a CFD approach based on the steady-RANS method with the SST k - ω turbulence model, adopting the multiple reference frame (MRF) strategy to reduce the computational effort. The comparison showed that the maximum value of blockage, which is reached in the asymptotic limit at very large tip speed ratio (TSR) values, does not depend appreciably on the number of blades. A higher number of blades, however, makes the occurrence of the maximum blockage come earlier at lower TSRs.

Suggested Citation

  • Abdelgalil Eltayesh & Magdy Bassily Hanna & Francesco Castellani & A.S. Huzayyin & Hesham M. El-Batsh & Massimiliano Burlando & Matteo Becchetti, 2019. "Effect of Wind Tunnel Blockage on the Performance of a Horizontal Axis Wind Turbine with Different Blade Number," Energies, MDPI, vol. 12(10), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:1988-:d:233873
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    References listed on IDEAS

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    Cited by:

    1. Matteo Vedovelli & Abdelgalil Eltayesh & Francesco Natili & Francesco Castellani, 2022. "Experimental and Numerical Investigation of the Effect of Blades Number on the Dynamic Response of a Small Horizontal-Axis Wind Turbine," Energies, MDPI, vol. 15(23), pages 1-19, December.
    2. Zhao, Shuang & Wang, Jianwen & Han, Yuxia & Liu, Zhen, 2022. "Research on the rotor speed and aerodynamic characteristics of a dynamic yawing wind turbine with a short-time uniform wind direction variation," Energy, Elsevier, vol. 249(C).
    3. Francesco Castellani & Abdelgalil Eltayesh & Matteo Becchetti & Antonio Segalini, 2021. "Aerodynamic Analysis of a Wind-Turbine Rotor Affected by Pitch Unbalance," Energies, MDPI, vol. 14(3), pages 1-16, January.
    4. Monjardín-Gámez, José de Jesús & Campos-Amezcua, Rafael & Gómez-Martínez, Roberto & Sánchez-García, Raúl & Campos-Amezcua, Alfonso & Trujillo-Franco, Luis G. & Abundis-Fong, Hugo F., 2023. "Large eddy simulation and experimental study of the turbulence on wind turbines," Energy, Elsevier, vol. 273(C).
    5. Nikolaos Chrysochoidis-Antsos & Gerard J.W. van Bussel & Jan Bozelie & Sander M. Mertens & Ad J.M. van Wijk, 2021. "Performance Characteristics of A Micro Wind Turbine Integrated on A Noise Barrier," Energies, MDPI, vol. 14(5), pages 1-29, February.
    6. Li, Shoutu & Chen, Qin & Li, Ye & Pröbsting, Stefan & Yang, Congxin & Zheng, Xiaobo & Yang, Yannian & Zhu, Weijun & Shen, Wenzhong & Wu, Faming & Li, Deshun & Wang, Tongguang & Ke, Shitang, 2022. "Experimental investigation on noise characteristics of small scale vertical axis wind turbines in urban environments," Renewable Energy, Elsevier, vol. 200(C), pages 970-982.

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