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Power Performance Analysis Based on Savonius Wind Turbine Blade Design and Layout Optimization through Rotor Wake Flow Analysis

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  • Heejeon Im

    (Multidisciplinary Graduate School Program for Wind Energy, Jeju National University, Jeju 63243, Republic of Korea)

  • Bumsuk Kim

    (Faculty of Wind Energy Engineering, Graduate School, Jeju National University, Jeju 63243, Republic of Korea)

Abstract

Savonius vertical axis wind turbines have simple structures, can self-start in environments with low wind speed and strong turbulence intensity, and can be installed at low costs. Therefore, installation is possible in urban centers with low wind speeds, which may contribute to the construction of a decentralized power system. Savonius wind turbines are operated by drag force, with the blades moving in the same direction as the flow current providing the thrust force and those moving in the opposite direction of the wind being rotated by the drag force. In this study, the Savonius wind turbine design was examined to develop a stable wind turbine for use in urban centers at low wind speeds. The Savonius rotor design variables (aspect and overlap ratios) and blade forms (semi-circular, Bach, and elliptical type) were examined using computational fluid dynamics analysis. Moreover, a rotor capable of providing the target output was designed and maximum rotor efficiency of 18% was realized. Further, changes to the flow corresponding with various turbine layouts were analyzed to determine the arrangement that would maximize turbine performance. The results showed that the maximum efficiency of the turbines was in the 17–19% range and without significant variation.

Suggested Citation

  • Heejeon Im & Bumsuk Kim, 2022. "Power Performance Analysis Based on Savonius Wind Turbine Blade Design and Layout Optimization through Rotor Wake Flow Analysis," Energies, MDPI, vol. 15(24), pages 1-17, December.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:24:p:9500-:d:1003690
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    References listed on IDEAS

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    4. Roy, Sukanta & Saha, Ujjwal K., 2015. "Wind tunnel experiments of a newly developed two-bladed Savonius-style wind turbine," Applied Energy, Elsevier, vol. 137(C), pages 117-125.
    5. Al-Kayiem, Hussain H. & Bhayo, Bilawal A. & Assadi, Mohsen, 2016. "Comparative critique on the design parameters and their effect on the performance of S-rotors," Renewable Energy, Elsevier, vol. 99(C), pages 1306-1317.
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    Cited by:

    1. Khadijah Barashid & Amr Munshi & Ahmad Alhindi, 2023. "Wind Farm Power Prediction Considering Layout and Wake Effect: Case Study of Saudi Arabia," Energies, MDPI, vol. 16(2), pages 1-22, January.
    2. Kumail Abdulkareem Hadi Al-Gburi & Firas Basim Ismail Alnaimi & Balasem Abdulameer Jabbar Al-quraishi & Ee Sann Tan & Ali Kamil Kareem, 2023. "Enhancing Savonius Vertical Axis Wind Turbine Performance: A Comprehensive Approach with Numerical Analysis and Experimental Investigations," Energies, MDPI, vol. 16(10), pages 1-23, May.

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