复合新翼型风力机叶片的气动设计及建模

Aerodynamic design and modeling of wind turbine with compound-specific airfoils

基于Wilson法,用美国可再生能源实验室开发的S系列新翼型S833、S834、S835和三者的组合翼型来设计叶片,不同翼型连接处采用MATLAB程序语言的样条差值和曲线拟合法进行过渡修正,以满足气动连续性要求。在叶片设计基础上,分别计算了单翼型和复合翼型叶片的气动性能;利用有限元分析软件ANSYS建立了风轮的三维实体模型。结果表明:复合翼型叶片在较宽尖速比范围内比其它几种单翼型叶片的功率系数大,利用ANSYS软件建立的风轮实体三维模型,为风轮的结构动态及载荷等问题的进一步分析提供了技术基础。

An aerodynamic design for blades is developed by apptymg wuson memou MATLAB programming language.Three different S airfoil S833 ,S834,S835 developed by the NREL are se- lected,In airfoil junction,Spline Interpolation and curve-fitting method are used to transition modify in or- der to meet the aerodynamic continuity.Based on the blade design,the aerodynamic performance of the blades with compound-specific airfoils and single airfoils is calculated respectively;And a three-dimen- sional solid model of wind turbine and blades is established using ANSYS software.The results showe that the powercoefficient of blades with compound-specific airfoils is bigger than the single one in a wide range of tip speed ratio,The three-dimensional solid model of wind turbine established using ANSYS software provides technical foundation for further analysis of dynamic structure and load of wind turbine.