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<p>Wind turbine blades are highly susceptible to sand-induced changes, as sand particles impose additional impact loads on the blades when carried by natural wind. The influence of sand on the surface morphology of the blades is evidently pronounced. This study employs a discrete element analysis method and couples FLUENT with EDEM for computational purposes, investigating the wear mechanism of wind turbine blades under various sand conditions. By considering different sand morphologies (spherical, triangular, and irregular) and operational scenarios (sand exposure, sandstorm, and severe sandstorm), we examine the wear characteristics of wind turbine blades at different angles of attack. Our findings reveal that the specific shape of the sand particles significantly affects both upper and lower airfoil curves as well as surface erosion patterns on the blade’s exterior. Notably, body-shaped sands and triangular sands exhibit distinct erosion morphologies compared to spherical sands. Furthermore, under identical sandy conditions, variations in blade surface wear are observed with changing angles of attack. Consequently, during actual wind turbine operations within wind farms, controlling angle-of-attack adjustments based on local wind conditions can effectively manage changes in blade profile curves caused by sandy environments. These research conclusions provide valuable insights for optimizing operational control strategies for wind turbines deployed in wind farms.</p>

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Research on Erosion Wear of Wind Turbine Blades by Sand-Carrying Wind Based on EDEM

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • Xin Guan,
  • Longlong Zong,
  • Bo Liu,
  • Dechen Kong

摘要

Wind turbine blades are highly susceptible to sand-induced changes, as sand particles impose additional impact loads on the blades when carried by natural wind. The influence of sand on the surface morphology of the blades is evidently pronounced. This study employs a discrete element analysis method and couples FLUENT with EDEM for computational purposes, investigating the wear mechanism of wind turbine blades under various sand conditions. By considering different sand morphologies (spherical, triangular, and irregular) and operational scenarios (sand exposure, sandstorm, and severe sandstorm), we examine the wear characteristics of wind turbine blades at different angles of attack. Our findings reveal that the specific shape of the sand particles significantly affects both upper and lower airfoil curves as well as surface erosion patterns on the blade’s exterior. Notably, body-shaped sands and triangular sands exhibit distinct erosion morphologies compared to spherical sands. Furthermore, under identical sandy conditions, variations in blade surface wear are observed with changing angles of attack. Consequently, during actual wind turbine operations within wind farms, controlling angle-of-attack adjustments based on local wind conditions can effectively manage changes in blade profile curves caused by sandy environments. These research conclusions provide valuable insights for optimizing operational control strategies for wind turbines deployed in wind farms.