吹吸联合射流对垂直轴风力机气动特性的影响研究  

Aerodynamic Performance Investigation of Vertical Axis Wind Turbines with the Synergistic Effect of Blowing and Suction

作　　者：刘青松 缪维跑 罗帅 李春[1,2] LIU Qingsong;MIAO Weipao;LUO Shuai;LI Chun(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《动力工程学报》2023年第8期1022-1029,共8页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51976131,52006148);上海市“科技创新行动计划”地方院校能力建设资助项目(19060502200)。

摘　　要：针对垂直轴风力机(VAWT)复杂流场特性,提出一种基于吹吸联合射流的主动流动控制方法,以抑制攻角周期性变化导致的动态失速现象。通过在翼型吸力面前缘和压力面尾缘同时进行吸气与吹气,采用高精度数值模拟研究其对垂直轴风力机气动性能的影响。结果表明:在中低叶尖速比下吹吸联合射流对功率系数的提升效果最为明显,并能显著减缓叶片动态失速现象,消除整机负转矩,进而减小叶片离心力以及增加风轮的稳定性与安全性。For the complex flow field characteristics of vertical axis wind turbine(VAWT),an active flow control method based on the synergistic effect of blowing and suction was proposed to suppress the dynamic stall phenomenon caused by periodic changes in the angle of attack.The effect on the aerodynamic performance of the VAWT was investigated by simultaneous suction and blowing at the leading edge of the airfoil suction surface and the trailing edge of the pressure surface using high-precision numerical simulations.Results show that the synergistic jet is most effective in improving the wind energy utilization at low to medium tip speed ratios,which can significantly slow down the dynamic stall of the blade,eliminate the negative torque of the whole machine,and then reduce the centrifugal force of the blade and increase the stability and safety of the wind turbine.

关 键 词：垂直轴风力机 主动流动控制 气动性能 计算流体力学 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]