气动、结构、载荷相协调的大型风电叶片自主研发进展  

Independent Research and Development( R & D) Progress in Large-Scale Wind Turbine Blades With Coordinated Aerodynamics,Structure and Loads

作　　者：徐宇[1,2] 廖猜猜[1,2] 荣晓敏[1,2] 王强[1,2] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]河北省风电叶片工程技术研究中心,河北保定071051

出　　处：《应用数学和力学》2013年第10期1028-1039,共12页Applied Mathematics and Mechanics

基　　金：国家自然科学基金资助项目(50876105)~~

摘　　要：从叶片设计的3个关键环节(气动设计、结构设计和载荷评估)出发,对叶片自主研发进展进行了总结分析.在气动设计方面,概述了计算流体动力学(computational fluid dynamics,CFD)方法、涡方法和叶素动量(blade element momentum,BEM)方法,并依据工程中广泛应用的BEM方法,指出了低风速区风电叶片的解决思路;在结构设计方面,简要概述了基于梁模型的传统设计分析方法,分析了其在大型复合材料叶片薄壳结构上的不足,并对有限元方法(finite element method,FEM)在叶片结构分析中的应用进展进行了介绍;在载荷评估方面,介绍了其对叶片和整机其它部件的影响,阐述了载荷预估方面的工作进展.然后,通过分析3个关键环节之间的相互关系,得到如下结论:建立气动、结构和载荷相协调的叶片优化设计体系,才能真正满足高效低成本的需要.最后,指明了需要进一步研究的主要方向,即高效低载翼型研究,结构非线性有限元分析,气动-结构耦合研究,设计标准制定.最终目标是建立适合中国风资源特点的叶片研发体系,推动我国风电产业发展.According to the three key elements in the blade design process, which were aero- design, structural design and loads prediction, independent R ＆ D progress was summarized and analyzed. In aero-design, the computational fluid dynamics （CFD） method, vortex method and the blade element momentum method （BEM） were described. Then based on the BEM method, which was widely used in the engineering design, solutions for designing blades ap- plied in low-speed wind area were pointed out. In structural design, a brief overview of the tra- ditional design and analysis methods based on beam model was given. Then, the defects of these methods when used in thin-shell structures of large-scale composite blade were analyzed. At last, the application progress in the finite element method （FEM） used in the blade structure analysis was also described. In loads prediction, the effects of the loads prediction on blades and the entire wind turbine were introduced. The progress in load forecasting was also de- scribed. Then, a through analyzing the relationship between these three key elements, a conclu- sion, that developing a blade optimization design system with coordinated aerodynamics, struc- ture and loads could truly meet the requirements of high efficiency and low cost, was got. At last, the main directions need further study are pointed out. Those are, high efficiency and low uploaded airfoils, structural nonlinear finite element analysis, aero-structure coupling research and enacting design standard etc. The aim is establishing a blade R ＆ D system suitable for the conditions of wind resources in China, and promoting the development of wind power in the cotmtry.

关 键 词：风电叶片 气动设计 结构设计 载荷评估 

分 类 号：TK38[动力工程及工程热物理—热能工程] O31[理学—一般力学与力学基础]