基于EDEM-FLUENT耦合仿真的风沙工况下风力机叶片侵蚀特性研究

Research on Erosion Characteristics of Wind Turbine Blades Under Wind-Sand Conditions Based on EDEM-FLUENT Coupling Simulation

风力机叶片在风沙运行环境下易受侵蚀,并对风力机叶片的气动特性造成影响,这不仅会减低风电机组发电效率,还会极大缩减风力机的使用寿命。为此,基于EDEM与FLUENT耦合仿真的方法,模拟了不同砂砾形状(球形、三角形、体形)和不同风沙运行工况(扬沙、沙尘暴、强沙尘暴)下,风沙对风力机叶片的侵蚀磨损。研究结果可以进一步指导了优化风电机组运行控制策略,使风力机在风沙运行工况下,通过改变攻角来减少叶片侵蚀,延长使用寿命,具有较高的工程实践价值。

Wind turbine blades are highly susceptible to erosion in wind-sand environments,which affects their aerodynamic properties.This not only reduces the power generation efficiency of wind turbines but also significantly shortens their operational lifespan.Therefore,this study uses EDEM-FLUENT coupled simulations to model the erosion and wear of blades under different sand grain shapes(spherical,triangular,and irregular)and various sand and dust conditions(sand,sandstorm,and strong sandstorm).The results can further guide the optimization of the wind turbine operation control strategy,so that the wind turbine can reduce the degree of blade erosion and increase the service life by changing the angle of attack under sandy operation conditions,which is of high value for engineering practice.