摘要
为改善垂直轴风力机动态失速特性,提出一种可随风力机方位角变化而自动伸缩的斜柱结构翼型。以NACA0021翼型为研究对象,采用数值模拟方法,分析其对垂直轴风力机动态气动性能的影响。结果表明:伸缩式斜柱在作用方位角内可显著抑制流动分离并提高垂直轴风力机转矩,最大风能利用系数较原始翼型提高13.6%;同时,伸缩式斜柱可使最佳工况点向低尖速比偏移,提高整机运行过程中的稳定性。
In order to improve the dynamic stall characteristics of vertical axis wind turbine,an airfoil with inclined column structure that can automatically expand and contract with the change of wind turbine azimuth angle is proposed.Taking the NACA0021 airfoil as the research object,the numerical simulation method is used to analyze its influence on the dynamic aerodynamic performance of the vertical axis wind turbine.The results show that the telescopic inclined column can significantly suppress the flow separation and increase the torque of the vertical axis wind turbine within the action phase angle,and the maximum power coefficient is increased by 13.6%compared with the original airfoil.At the same time,the telescopic inclined column can make the best working point offset to low tip speed ratio to improve the stability of the VAWT during operation.
作者
欧华浩
叶舟
刘青松
李根
罗帅
李春
Ou Huahao;Ye Zhou;Liu Qingsong;Li Gen;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)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2023年第5期376-383,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51976131,51676131)
国际(地区)合作与交流项目(51811530315)
上海“科技创新行动计划”地方院校能力建设项目(19060502200)。
关键词
垂直轴风力机
主动控制
流动分离
气动性能
伸缩式斜柱
尖速比
vertical axis wind turbine
active control
flow separation
aerodynamic performance
telescopic inclined column
tip speed ratio
