摘要
非定常气弹设计是叶片大型化设计的瓶颈技术,开展叶片气弹响应实验研究具有重要的科学意义和较高的挑战性。本文提出一种气弹相似准则,搭建了模拟三维叶片弯扭耦合气弹响应的翼型俯仰沉浮二自由度风洞气弹实验平台,分析了安攻角和结构刚度对气弹稳定性和振荡形态的影响规律。研究发现了4类不同的气弹响应类型,增大刚度和安装角可以在一定程度上提高负失速颤振的临界风速。结果可指导柔性叶片气弹设计及数值验证。
The unsteady aeroelastic design is the bottleneck technology for the large-scale design of the wind turbine blade.It is of great scientific significance and high challenge to carry out experimental research on the aeroelastic response of the blade.In this paper,an aeroelastic similarity criterion is proposed,and an airfoil pitch-plunge two-degree-of-freedom wind tunnel aeroelastic experimental platform simulating the three-dimensional blade bending-torsional coupled aeroelastic response is constructed.The installation angle and structural stiffness are analyzed for aeroelastic stability and oscillation.Four different types of aeroelastic response are found in this study.Increasing stiffness and installation angle can improve the critical wind speed of the negative stall flutter to a certain extent.These results can provide guidance for the aeroelastic design and numerical verification of flexible blades.
作者
张超宇
武广兴
石可重
周晖钰
李庆安
ZHANG Chao-Yu;WU Guang-Xing;SHI Ke-Zhong;ZHOU Hui-Yu;LI Qing-An(Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;National Energy Wind Turbine Blades R&D Center,Beijing 100190,China;Key Laboratory of Wind Energy Utilization of CAS,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2022年第2期407-413,共7页
Journal of Engineering Thermophysics
基金
国家自然科学基金青年科学基金项目(No.51706228)。
关键词
风力机翼型
气弹响应
气弹模拟实验
气弹稳定性
wind turbine airfoil
aeroelastic response
aeroelastic simulation experiment
aeroelastic stability
