基于ONERA模型的柔性叶片气弹稳定性研究  

Aeroelastic stability of flexible blade based on ONERA model

作　　者：李治国[1,2] 陈猛 张雅静 高志鹰[2,4] 汪建文[2,4] Li Zhiguo;Chen Meng;Zhang Yajing;Gao Zhiying;Wang Jianwen(School of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;School of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;School of Transportation and Municipal Engineering,Inner Mongolia Technical College of Construction,Hohhot 010070,China;Key Laboratory of Wind and Solar Energy Utilization Technology of Ministry of Education,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学机械工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [3]内蒙古建筑职业技术学院交通与市政工程学院,内蒙古呼和浩特010070 [4]内蒙古工业大学风能太阳能利用技术教育部重点实验室,内蒙古呼和浩特010051

出　　处：《可再生能源》2022年第11期1487-1492,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(51866012,51366010);内蒙古自治区直属高校基本科研业务费项目(JY20220240,JY20220378)。

摘　　要：为了探究大型风力机柔性叶片在挥舞-摆振耦合作用下的气弹稳定性,文章基于ONERA非线性气动模型建立了包括二维翼型非线性气动升阻力方程及其挥舞-摆振耦合运动方程的气弹模型。利用该气弹模型计算得到NREL 5 MW风力机叶中段DU35-A17翼型在叶片变桨前后的挥舞、摆振变形量变化曲线,并与FAST计算结果进行比较,以验证气弹模型的准确性。结果表明:在额定工况时,叶片出现z轴正方向、y轴负方向的弯曲变形;风力机未变桨时,挥舞、摆振变形量会随风速增大而增大;叶片变桨后,挥舞、摆振变形量会比额定工况下的变形量有所减少。由于计算得到的挥舞、摆振变形量曲线是收敛的,故叶片是气弹稳定的。该气弹模型为评估大型风力机柔性叶片气弹稳定性提供了新方法,计算得到的挥舞摆振位移数据为优化风力机结构参数、提升叶片气弹稳定性提供了数据参考。In order to explore the aeroelastic stability of flexible blades of large wind turbines under the flapwise-edgewise coupling,an aeroelastic model including a two-dimensional airfoil nonlinear aerodynamic lift-drag equation and a motion equation coupled with flapwise-edgewise is established based on the ONERA nonlinear aerodynamic model.The variation curves of flapping and edgewise deformation of DU35-a17 airfoil in the middle section from NREL 5 MW wind turbine before and after pitching are calculated using the aeroelastic model,and compared with the calculation results by soft FAST to verify the accuracy of the aeroelastic model.The results show that the blade has bending deformation in the positive direction of z axis and negative direction of y axis under rated working conditions.The calculated flapwise and edgewise displacement results can provide a data reference for optimizing the structural parameters of the wind turbine and improving the aeroelastic stability of the blade.

关 键 词：柔性叶片 气弹稳定性 ONERA模型 四阶龙格库塔法 挥舞-摆振耦合 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]