基于EDEM的挟沙风对风力机叶片冲蚀磨损研究  

Researchon ErosionWear of Wind Turbine Blades by Sand-carryingWind Based on EDEM

作　　者：张文璐 关新 范端阳 ZHANG Wenlu;GUAN Xin;FAN Duanyang(School of Renewable Energy,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province)

机构地区：[1]沈阳工程学院新能源学院,辽宁沈阳110136

出　　处：《沈阳工程学院学报(自然科学版)》2025年第1期1-6,共6页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：风力机叶片属于对风-沙影响敏感的主要部件,沙砾风会对风力机叶片产生附加的冲击影响,尤其对叶片表面形态影响比较大。基于风力机叶片在风沙环境中的磨损机理,采用离散单元法结合FLUENT和EDEM进行耦合仿真计算,研究不同沙砾颗粒形态(球形、三角形、体形)、不同运行环境(扬沙、沙尘暴、强沙尘暴)条件下的攻角变化对风力机叶片的磨损特性及规律的影响。结果表明:颗粒形态对叶片表面的磨损形态与磨损量有较大影响,体形沙尘颗粒对叶片的磨损量为球形沙尘颗粒的6倍且磨损表面呈深色片状,三角形沙尘颗粒对叶片的磨损量为球形沙尘颗粒的4.6倍且磨损呈片状;不同运行环境下的叶片表面磨损分布面积随攻角的增大而增大。Wind turbine blades are the main components which are sensitive to the influence of wind and sand.Gravel wind will have additional impact on wind turbine blades,especially on the surface morphology of blades.In this paper,based on the wear mechanism of wind turbine blades in wind-sand environment,the discrete element method combined with FLUENT and EDEM was used to carry out coupling simulation calculation to study the wear characteristics and laws of wind turbine blades under the conditions of different gravel particle shapes(spherical,triangular,body shape)and different operating environments(blowing sand,dust storm,strong dust storm)under the change of attack angle.The results show that the particle morphology has a great influence on the wear morphology and wear amount of the blade surface.The wear amount of the body shape dust particles on the blade is 6 times that of the spherical dust particles and the wear surface is dark flake.The wear amount of the triangular dust particles on the blade is 4.6 times that of the spherical dust particles and the wear is flake,and the wear amount of the blade changes with the change of the attack angle under different dust weather conditions.

关 键 词：风力机叶片 离散元 EDEM-FLUENT耦合 磨损 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]