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In recent years, the contribution of fossil fuels towards global warming and their limited availability have demanded efficient renewable energy production systems. In this scenario, straight-bladed vertical axis wind turbines (SB-VAWTs) can be an appropriate solution for renewable energy production in a low to medium wind speed environment. However, small-scale SB-VAWTs have lower energy generation capability with self-starting issue. The present work investigated a comparative performance analysis between conventional and J-shaped airfoils in small-scale Darrieus-type SB-VAWTs using two airfoil families: symmetrical and cambered. The performance of J-shaped cambered airfoils is better than that of the J-shaped symmetrical airfoils. The J-shaped cambered NACA 4418 airfoil improved the performance of Darrieus-type SB-VAWTs up to 21%.

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Comparative Performance Analysis of Darrieus-Type Straight-Bladed Vertical Axis Wind Turbine Using Conventional and J-Shaped Airfoils

  • 会议论文

  • 发表日期：

    2025年

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  • Kabita Naik,
  • Sunil Kumar Biswal,
  • Niranjan Sahoo

摘要

In recent years, the contribution of fossil fuels towards global warming and their limited availability have demanded efficient renewable energy production systems. In this scenario, straight-bladed vertical axis wind turbines (SB-VAWTs) can be an appropriate solution for renewable energy production in a low to medium wind speed environment. However, small-scale SB-VAWTs have lower energy generation capability with self-starting issue. The present work investigated a comparative performance analysis between conventional and J-shaped airfoils in small-scale Darrieus-type SB-VAWTs using two airfoil families: symmetrical and cambered. The performance of J-shaped cambered airfoils is better than that of the J-shaped symmetrical airfoils. The J-shaped cambered NACA 4418 airfoil improved the performance of Darrieus-type SB-VAWTs up to 21%.