外场实验风力机叶片气动性能的数值研究  

Numerical Study on Aerodynamic Performance of Wind Turbine Blades in Field Experiments

作　　者：李银然[1,2,3] 陈泽琼 郭朋威 LI Yin-ran;CHEN Ze-qiong;GUO Peng-wei(School of Energy and Power Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;Key Laboratory of Fluid Machinery and Systems,Lanzhou 730050,China;Gansu Provincial Technology Center for Wind Turbines,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]甘肃省流体机械及系统重点实验室,甘肃兰州730050 [3]甘肃省风力机工程技术研究中心,甘肃兰州730050

出　　处：《液压气动与密封》2025年第3期1-6,共6页Hydraulics Pneumatics & Seals

基　　金：国家重点基础研究发展计划(2014CB04201);国家自然科学基金(51566011);甘肃省高等学校产业支撑计划项目(2022CYZC-27);甘肃省基础研究创新群体项目(21JR7RA277)。

摘　　要：外场风况的随机变化和全尺寸风轮的非定常特性,导致外场的重复性实验结果很难得到,而数值计算可以方便有效地提供对比数据。在保证网格无关性及计算过程准确性的基础上,对外场实验风力机进行数值计算。首先,分析某实验工况时叶片的压力分布及流场结构,表明越靠近叶尖,压力分布的计算值和实验值吻合度越高,而越靠近叶根,大尺度的三维分离旋涡和测压带的联合作用使其压力分布偏差越大;其次,计算分析在整个风速区间4~23 m/s上风力机叶片表面的流动特性及压力性能,发现三维旋转效应引起明显的失速延迟现象。Due to the random variation of wind,high complexity of a full-size wind turbine unsteady characteristics,resulting in reproducible experiments results outfield difficult to obtain,and numerical calculation can be effective to provide comparative data.On the basis of ensuring the mesh independence and the accuracy of the calculation process,the numerical calculation of the wind turbine is carried out.Firstly,in a certain experimental condition,the calculation analysis,the pressure distribution and flow field structure of the blade were calculated and analyzed,the results showed that the closer the tip,the higher the degree of fitting of pressure distribution of the calculated value and experimental value,and the closer to the blade root,large-scale three-dimensional separation vortex lead to the greater deviation of the pressure distribution.Secondly,in the whole speed range 4~23 m/s,the flow characteristics and mechanical properties of wind turbine blade were calculated for outfield further experiments,the results show that the three-dimensional rotation effect caused significant delays stall.

关 键 词：压力分布 水平轴风力机 外场实验 数值计算 

分 类 号：TH138[机械工程—机械制造及自动化] TK83[动力工程及工程热物理—流体机械及工程]