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Icing mechanism and prediction analysis for wind turbine blades[J].计算力学学报,2021,38(3):327~336

Icing mechanism and prediction analysis for wind turbine blades
Icing mechanism and prediction analysis for wind turbine blades

DOI：10.7511/jslx20201122001

 作者 单位 E-mail 于东玮 大连理工大学 海洋科学与技术学院, 盘锦 124221大连理工大学 运载工程与力学学部, 大连 116023 司广全 中国华能集团公司火电建设中心, 北京 100031 孔祥逸 大连理工大学 海洋科学与技术学院, 盘锦 124221 温建民 新疆金风科技股份有限公司, 乌鲁木齐 830026 陈锋 新疆金风科技股份有限公司, 乌鲁木齐 830026 张大勇 大连理工大学 海洋科学与技术学院, 盘锦 124221大连理工大学 宁波研究院, 宁波 315000 zhangdy@dlut.edu.cn 操太春 大连理工大学 海洋科学与技术学院, 盘锦 124221大连理工大学 运载工程与力学学部, 大连 116023

高原和寒冷地区风能资源十分丰富，风机在此地区运行时叶片表面极易出现覆冰现象。针对寒区风机叶片覆冰问题，本文首先明确覆冰机理以及主要的影响参数；基于数值模拟分析在冻雨条件下，环境因素和叶片几何参数对叶片覆冰的影响。结果表明，当温度不变，风速从2 m/s增加到4 m/s时，叶片表面的最大覆冰厚度增幅高达117%；当风速从4 m/s到10 m/s时，最大冰厚增幅逐渐减小到0.9%，覆冰质量随着风速的增加呈线性增长。当风速不变，温度从-1 ℃降到-2 ℃时，叶片表面的覆冰质量和最大冰厚分别增加71%和24%；当温度从-2 ℃到-5 ℃时，覆冰质量和最大冰厚增幅减小到1.7%和0.9%。当温度和风速在某一固定值时，覆冰质量和最大厚度随着叶片相对厚度和攻角的增加而增大。

Wind energy resources are very rich in high-altitude the plateaus and cold regions.It is easy for ice to form on the blade surface of wind turbines in this region.In order to solve the ice-covering problem of wind turbine blades in cold regions,the ice-covering mechanism and the main influencing parameters are defined in this paper firstly.Based on numerical simulation,the effects of environmental factors and blade geometric parameters on blade icing under freezing rain conditions were analyzed.The results show:when the wind speed increases from 2 m/s to 4 m/s,the maximum ice thickness increases by 117%,when the wind speed increases from 4m/s to 10 m/s,the maximum ice thickness increases by 0.9%.The ice mass increases linearly with the increase of wind speed.When the wind speed is constant and the temperature drops from -1℃ to -2℃,the ice mass and the maximum ice thickness on the blade surface increase by 71% and 24%.When the temperature changes from -2℃ to -5℃,the ice mass and the maximum ice thickness increase by 1.7% and 0.9%.When the temperature and wind speed are at a fixed value,the ice mass and maximum thickness increase with the increase of relative thickness and angle of attack of the blade.