【作者】 杨新彦；

【导师】 陈家权；

【作者基本信息】 广西大学 ， 机械设计及理论， 2006， 硕士

【摘要】 随着环保呼声日益高涨和非可再生资源的过度消耗，风力发电以其独特的优越性日益被重视。叶片是风力发电机吸收风能的重要元件。本课题以广西教育厅科技项目《1KW风力发电机产品的研究开发》为背景，主要研究小型水平轴风力发电机的叶片设计、性能计算、有限元动力学分析。主要研究成果如下： 1．简单实用的叶片设计拟合模型。综合国内外多种文献，整理现有叶片设计模型基础上，得出简单实用的叶片参数设计拟合模型——各叶素弦长计算公式和安装角计算公式。该模型函数简单；设计精度高；设计叶片具有流线型。 2．叶片精确实体建模仿真。以最后输出电功率P=400W为目标，采用翼型NACA4412进行叶片设计。基于叶片设计数据，进行三维坐标变换，本文利用较通用的办公软件EXCEL实现复杂的矩阵坐标变换，求出叶片各点的三维坐标；利用三维建模软件SolidWorks进行精确实体建模，方便进一步分析。该法可为扭曲实体和其他复杂实体精确建模提供新思路。 3．叶片静态气动性能模拟计算。基于Glauert模型和Wilson模型对设计叶片进行性能对比计算，利用各种性能修正系数进行性能修正。得出所设计叶片的设计状态气动性能指标；并提出气动性能较合理的计算途径，即以Wilson模型气动计算为基础采用修正系数修正，其中轮毂修正采用新方更多还原

【Abstract】 More and more attention is being paid to the wind energy for its particular merits when the environment is being badly polluted and the conventional resource is drying up. The blade of wind turbine is an important part, absorbing wind energy and converting it to machine energy. The paper studied the design model, the performance characters and dynamics analysis of the blade of the horizontal axis wind turbine. The main conclusions are as follows:1. New simple and precise blade design model based on the vortex theory. Compared with many kinds of design models, the new model was considered as optimization design method to design the pitch and the chord of the blade. Firstly, the model was much simpler than Schmitz model, Glauert model and Wilson model; secondly, it had the same precision with Schmitz model, Glauert model and even Wilson model; thirdly, it was not necessary to amend the design data with linear approximation.2. The precise 3D blade. A new blade was designed with the areofoil NACA4412 according to the above new design model, and the power P of the corresponding wind turbine was 400W. Based on the above blade parameters, the blade 3D model was displayed as follows. Firstly, the data of the areofoil of blades were revolved and converted to the data of the 3D-block body of blades更多还原