摘要
基于(势流)涡方法开发了水平轴风力机叶片设计优化程序,采用自由尾迹模型对增加小翼后的叶片气动设计性能进行初步分析,研究了风力机设计工况下,小翼对气流涡位置及诱导速度分布等气动性能参数的影响,对比分析了增加小翼后功率输出情况。结果表明,增加小翼后风力机叶片在设计工况下功率系数有明显增加,可以考虑将叶尖小翼作为已安装风机功率提升的解决方案之一。
A design and analysis procedure for rotor blades is developed,based on vortex theory.This procedure then applied to calculate the vortex location and induced velocity distribution in different conditions.Free wake model is used to analyze of the aerodynamic performance of horizontal axis wind turbine rotor by adding winglets at the tip of the blade.The results show that presence of winglet at the tip of the wind turbine blade will improve the power coefficient for design wind speeds,and downwind winglets are superior to upwind ones with respect to optimization of power.
出处
《科学技术与工程》
北大核心
2015年第3期101-104,115,共5页
Science Technology and Engineering
关键词
水平轴风力机
涡理论
尾迹模型
气动性能
叶尖小翼
horizontal axis wind turbine vortex theory wake model aerodynamic performance tip winglet
