水平轴风力机静态失速数值模拟  

Numerical Simulation on the Static Stall of Wind Turbine Blade

作　　者：李佳[1] 胡丹梅[1] 张建平[1] 

机构地区：[1]上海电力学院能源与环境工程学院动力系,上海200090

出　　处：《华东电力》2011年第7期1171-1176,共6页East China Electric Power

基　　金：国家自然科学基金项目(50706025);上海市教育委员会科研创新重点项目(11ZZ171);上海市自然科学基金项目(09ZR1413000)~~

摘　　要：采用数值模拟的方法计算了NREL Phase VI叶轮静态、旋转时沿径向5个截面的压力系数、绕流流场以及其升力系数,进而分析了叶片旋转效应引起的静态失速及其特性。结果表明,当叶片表面的流动为附着流动时,相同攻角下二维翼型流场和旋转叶片的翼型流场两者并无差别,不会发生静态失速现象。当叶片表面的流动发生失速时,其截面翼型周围流体的流动与相应的二维翼型周围流体的流动差别较大,发生静态失速现象。旋转叶片的静态失速现象沿叶片径向从叶尖到叶根处越来越明显,叶片内侧段叶根附近最明显。结论可为深化了解风轮叶片的气动性能及风力机的设计工作提供借鉴。The pressure coefficient,the flow field and its lift coefficient to the 5 cross-sections of different radius of NREL Phase VI are obtained by numerical simulation when the blade is static and rotating,then the performance of static stall is analyzed accordingly.When the angle of attack of the relative wind speed is lower than critical angle of attack,the flow around the rotating blade is close to the static blade,and the static stall occurs when the blade is stall whose effect is more and more obvious from the tip to the root of the rotating blade.The study of the static stall can provide more knowledge for aerodynamic performance study of the wind turbine blade and shed lights into the design of the wind turbine.

关 键 词：风力发电机 静态失速 失速延迟 数值模拟 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]