倾斜来流对H型垂直轴风力机气动性能的影响  

Effects of Tilted Incoming Flow on Aerodynamic Characteristics of H-type Vertical Axis Wind Turbines

作　　者：梁嘉鹏 左行 朱建勇 Jia-peng Liang;Hang Zuo;Jian-yong Zhu(College of Aero-engine,Shenyang Aerospace University)

机构地区：[1]沈阳航空航天大学航空发动机学院

出　　处：《风机技术》2025年第1期53-61,共9页Chinese Journal of Turbomachinery

基　　金：辽宁省教育厅面上项目(LJKZ0183)。

摘　　要：为了研究倾斜来流对H型垂直轴风力机气动性能的影响,对两叶片NACA0021H型风力机进行数值计算,分析了风力机叶片不同位置的扭矩分布以及风力机的流场特性。研究结果表明:一定的来流倾角使风力机的气动性能提升,在转速为224r/min下,功率提升53.51%;随着来流倾角的增大,风力机的风能利用系数下降,但风能利用系数峰值对应的最佳尖速比增大;倾斜来流情况下,风力机的尾迹会以倾斜的方式向下游发展,尾迹分布不再均匀。倾斜来流对风力机气动性能的影响是因为来流速度的竖直分量使得下风区叶片不再完全淹没在上风区叶片的尾迹中,增加了下风区叶片表面的压力差,提高了气动性能。To study the influence of the tilted incoming on the aerodynamic performance of the H-type vertical axis wind turbines,the numerical calculations are carried out on the two-bladed NACA0021 H-type wind turbine.The torque distributions of the wind turbine blades at different positions and the flow field characteristics of wind turbine are analyzed.The results indicate that a specific tilted angle of the incoming flow rises the aerodynamic performance of the wind turbine.when the speed is 224 r/min the power increased 53.51%.As the tilted angle of the incoming flow increases,the wind energy utilization coefficient of the wind turbine decreases,the optimal tip speed ratio corresponding to the peak of the wind energy utilization coefficient also increases.Furthermore,the wake of the wind turbine develops downstream at a tilted direction under a tilted incoming flow,and the wake distribution becomes less uniform.The effect of the tilted incoming flow on the aerodynamic performance of the wind turbine is due to the vertical component of the incoming flow speed,which results in the downwind blade no longer being completely submerged in the wake of the upwind blade.This increases the pressure difference between the surfaces of the downwind blades,and improves the aerodynamic performance.

关 键 词：风能 分布式发电 H型垂直轴风力机 倾斜来流 数值模拟 气动性能 

分 类 号：TM614[电气工程—电力系统及自动化]