片对垂直轴风力机气动性能的影响并分析了其流动机理。结果表明：气动弹片在高尖速比下可显著抑制流动分离并改善其动态失速特性，功率系数得到极大提升；切向力和转矩系数在气动弹片作用相位角范围内，均有一定提高，而在其它相位角内，风力机性能不受影响。

Aiming at the peak characteristics of tangential force of VAWT,a flap motion control strategy generally applicable to SBVAWT blades is proposed.In this paper,the highprecision CFD numerical simulation method is used to explore the influence of the flap on the aerodynamic performance of VAWT under different tipspeed ratios.The results indicate that the flap can significantly suppress flow separation and improve its dynamic stall characteristics at high tip speed ratio,and the power coefficient can be increased dramatically.The tangential force and torque coefficient are improved within the azimuth range of flap action,while the aerodynamic performance of VAWT is not affected in other noaction azimuths range.

TK83

国家自然科学基金（51976131，51676131）；国家自然基金国际(地区)合作与交流项目（51811530315）；上海市“科技创新行动计划”地方院校能力建设项目（19060502200）