摘要
为使风力机翼型同时具有较好的气动与结构性能,文章提出了一种翼型气动外形与内部拓扑结构一体化优化方法。采用Hicks-Henne型函数表征翼型气动外形,利用XFOIL计算其气动性能;通过ANSYS建立翼型有限元模型并计算其拓扑结构性能。在此基础上,采用MATLAB编写基于遗传算法且以升阻比最大以及结构柔顺度最小为目标的优化程序。对某1.5 MW风力机叶片的5种基本翼型进行3种目标权重因子下的优化设计,结果表明,相比于初始翼型,各优化翼型的最大升阻比均有提升,且结构柔顺度均有减小,并获得了基本一致的上、下表面主梁帽分别向前缘及后缘偏移的内部结构概念设计方案。与原叶片相比,采用优化翼型的新叶片结合微小的主梁帽偏移量可令叶片的气动与结构性能得到有效提升。
In order to achieve good aerodynamic and structural performance of wind turbine airfoils simultaneously, an integrated optimization method for aerodynamic shape and internal topology of airfoils is proposed. The airfoil aerodynamic shape is represented using the Hicks-Henne type function, and its aerodynamic performance is calculated by using XFOIL. A finite element model of the airfoil is established by using ANSYS, and the structural topology performance is computed. Based on this, a MATLAB program is developed by using a genetic algorithm with the objectives of maximizing the lift-to-drag ratio and minimizing the compliance.Five basic airfoils of a 1.5 MW wind turbine blade are optimized under 3 objective weight factors,and the results showed that compared to the initial airfoils, all optimized airfoils exhibit increase in maximum lift-to-drag ratio and decrease in structural compliance. At the same time, basically consistent internal structural conceptual design solutions are obtained with the spar caps on the upper and lower surfaces offset towards the leading and trailing edges, respectively. A comparison is made between the new blade using the optimized airfoils and the original blade, and the results indicate that the application of optimized airfoils combined with minor main spar caps offset, the aerodynamic and structural performance of the blades could be effectively improved.
作者
张帆
朱杰
蔡新
杨帆
黄文婷
戴天师
Zhang Fan;Zhu Jie;Cai Xin;Yang Fan;Huang Wenting;Dai Tianshi(School of Civil Engineering and Architecture,College of Science&Technology,Ningbo University,Ningbo 315300,China;College of Civil Engineering and Architecture,Jiaxing University,Jiaxing 314001,China;Jiangsu Province Engineering Research Center of Wind Turbine Structures,Hohai University,Nanjing 210098,China)
出处
《可再生能源》
北大核心
2025年第5期629-636,共8页
Renewable Energy Resources
基金
国家自然科学基金项目(51905214)
宁波市自然科学基金项目(202003N4156)。
关键词
风力机翼型
气动外形
拓扑结构
一体化优化
wind turbine airfoil
aerodynamic shape
topology structure
integrated optimization
作者简介
通信作者:朱杰(1985-),男,博士,副教授,研究方向为土木工程及新能源结构体系设计理论与方法应用。E-mail:zhukejie2222@163.com。
