摘要
本文利用商用CFD软件Numeca针对NREL Phase VI风轮结冰前后进行数值计算,计算包含风速由5 m/s至17 m/s区间各典型工况,并对计算结果进行了气动参数和载荷等相关分析。由此得出结论:结冰可以带来最高达51%的功率损失,同时会使风力机提前失速以及提高了启动风速等;结冰会导致在较高风速下叶根挥舞弯矩急剧增大从而增大叶片叶根强度要求;另一方面由叶片沿展向载荷分布得出结冰对整机影响主要集中在大于90%叶展的外侧区域,该区域是除冰防冰系统主要作用区域。
Numerical calculation had been performed for NREL Phase VI wind turbine under no icing and icing condition with commercial software Numeca in which wind speed ranged from5 m/s to 17 m/s.With the analysis of aerodynamic parameters and load distribution,results showed that icing from experiment can reduce the power by up to 51%,make wind turbine stall ahead of time and make the start-up more difficult.The blade root flap-wise moment will be increased rapidly under higher wind speeds.On the other hand by analyzing the blade spanwise load distribution,icing in the blade tip region,90~100%span,has the most pronounced effect on the wind turbine performance.And this should be the main region of the anti-icing and de-icing system working.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2015年第2期313-317,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.51376180)
关键词
结冰
风力机
气动性能
载荷分布
icing
wind turbine
aerodynamic performance
load distribution
