作　　者： ; ; ; ;

机构地区： 重庆大学机械工程学院机械传动国家重点实验室

出　　处： 《吉林大学学报（工学版）》 2016年第6期1940-1945,共6页

摘　　要： 基于保角变换理论,提出了风力机专用翼型气动结构一体化设计方法。该方法结合西奥道生理论和B样条曲线对风力机翼型进行参数化表达;以翼型气动和结构性能最优为目标,建立了翼型优化数学模型;运用RFOIL软件求解气动特性、利用Matlab求解翼型结构特性,结合改进的遗传算法对翼型进行优化设计。优化得到相对厚度为21%的新翼型CQUL210,并将该翼型与国际知名的风力机翼型DU93-W-210进行了对比分析,结果表明:在设计攻角范围内,新翼型在自由转捩和固定转捩条件下气动性能都更加优越。有限元分析结果表明,新设计的CQUL210翼型的结构性能优于DU93-W-210翼型。本文方法对提高叶片捕风能力和减轻叶片质量具有重大意义。 An integrated design method of aerodynamic and structural performance for wind turbine airfoil is proposed based on conformal transformation theory. In this method, the parameterized expression of an airfoil is presented by combing Theodorsen theory and B-spine curve. In order to optimize the aerodynamic and structural performance, an optimization mathematical model of the airfoil is established. The RFOIL software is used to solve the aerodynamic performance and a MATLAB code is used to solve the structural performance. The airfoil optimization is accomplished using an improved genetic algorithm. A new airfoil named CQUL210 with 21% maximum relative thickness is designed. Compared with the worldwide well known wind turbine airfoil DU93-W-210, of which the maximum relative thickness is also 21G, CQULZ10 has higher aerodynamic performance both in smooth and rough transitions in the range of the design attack angle. Finite element analysis indicates that CQUL210 has higher structural performance than DU93-W-210. The method of this study can be applied to increase the wind capturing power and reduce the mass of the turbine blade.

关 键 词： 机械设计 风力机翼型 一体化设计 遗传算法 气动性能 结构性能

领　　域： [动力工程及工程热物理]