AERODYNAMIC INFLUENCE OF DIFFERENT TRAILING-EDGE CHANGING METHODS TO THE BLUNT BRAILING-EDGE AIRFOIL
AERODYNAMIC INFLUENCE OF DIFFERENT TRAILING-EDGE CHANGING METHODS TO THE BLUNT BRAILING-EDGE AIRFOIL
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DOI：
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发表时间：
2009
影响因子：
2.4
通讯作者：
Z. Lei;Yang Ke;Zhao Xiao;Xu Jian
中科院分区：
文献类型：
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作者：
Z. Lei;Yang Ke;Zhao Xiao;Xu Jian
针对目前国内外风力涡轮机翼型后缘钝化设计方法较少的问题，提出了三种钝化后缘翼型设计方法：（1）改变翼型曲面以外的钝度分布，（2）改变翼型的过渡曲线，（3）改变翼型的上/下曲线，并利用Xfoil软件进行了计算，以NREL S814翼型为例，采用第二种方法进行了钝化后缘翼型的设计。计算结果表明，不同的掺混曲线对升力影响不大，但对阻力影响不大，在NREL S814上采用其它方法，计算结果表明，它们可以使工作区向左移动，增加最大升力。
Recently,there are only few methods to blunt the wind turbine airfoil trailing-edges in the world,therefore,three kinds of blunt trailing-edge airfoil design methods was presented and calculated by Xfoil.They are(1) changing the distribution of bluntness besides the camber, (2) changing the blending curve,(3) rotting the up/down curve of the airfoil.The airfoil NREL S814 was changed with the second method,and the result shows that different blending curves can hardly influent the lift but the drag if not few.Thc other methods were used on NREL S814 with the calculations indicate that they can move the working region towards left and increase maximum lift.