以Phase VI 风力机叶片为研究对象,以r/R=30%、63%和95%处叶素为参考,建立与7、9、15 m/s试验风速下该风力机叶片附着涡环量沿展向分布相同的叶片模型,分析尾随涡对风力机当地翼型气动性能的影响机理。采用带转捩效应的SST k-ω湍流模型,对所建立的叶片模型和二维S809翼型的气动特性进行研究和对比分析。结果表明：旋转叶片尾随涡对分离现象产生抑制作用且随攻角的增大减弱;尾随涡的影响表现出多重效应,除了减小当地翼型的攻角,还降低其吸力面负压系数和压力面正压系数。
Abstract
The Phase VI wind turbine blade was taken as the research object, and the blade element at r/R=30%, 63% and 95% were used as reference to establish the blade model with the same spanwise distribution of the attached vortex circulation of the wind turbine blade at the test wind speed of 7, 9 and 15 m/s to analyze the influence mechanism of the trailing vortex on the aerodynamic performance of the local airfoil of the wind turbine. SST k-ω turbulence model with transition effect was adopted to analyze and compare the aerodynamic characteristics of the established blade model and the two-dimensional S809 airfoil. The results show that the trailing vortex of the rotating blade has a restraining effect on the separation phenomenon, which weakens with the increase of angle of attack; The influence of trailing vortex shows multiple effects. Besides decreasing angle of attack of the local airfoil, the negative pressure coefficient of the suction surface and the positive pressure coefficient of the pressure surface are also reduced.
关键词
风力机 /
涡脱落 /
计算流体动力学 /
叶片 /
尾随涡 /
气动特性
Key words
wind turbines /
vortex shedding /
computational fluid dynamics /
blades /
trailing vortices /
aerodynamic characteristics
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基金
国家自然科学基金（51876054; 11502070）; 南通市民生科技重点项目（MS22019018）
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