摘要
为改善风力机翼型流动分离并提升气动性能,提出了一种加装在翼型吸力面附近的辅助装置。以NACA0021为主翼型,采用计算流体动力学方法,在攻角0°~24°范围内对比分析了原始翼型及带有辅助装置主翼翼型的气动性能。结果表明:采用非对称辅助小翼S809对主翼翼型增升减阻效果显著,在部分攻角下可有效抑制主翼吸力面大尺度分离涡产生,减小失速区域,使流动分离点后移,延缓流动分离;S809辅助小翼提高了主翼吸力面压力系数,使整体压差增大,显著提升了主翼气动性能。
In order to improve the flow separation and aerodynamic performance of wind turbine airfoil,an auxiliary device installed on the suction surface of airfoil was proposed.Taking NACA0021 as the main airfoil,the computational fluid dynamics(CFD)method was used to compare and analyze the aerodynamic performance of the original airfoil and the main airfoil with auxiliary device in the range of attack angle of 0°-24°.Results show that the asymmetric auxiliary winglet S809 has a significant effect on increasing lift and reducing drag of the main airfoil.It can effectively suppress the generation of large-scale separation vortex on the suction surface of the main airfoil at some angles of attack,reduce the stall area,make the flow separation point move backward,and delay the flow separation.In addition,the S809 auxiliary winglet increases the pressure coefficient of the main airfoil suction surface and the overall pressure difference,and significantly improves the aerodynamic performance of the main airfoil.
作者
俞洪静
岳敏楠
李春
缪维跑
欧华浩
黄浩达
YU Hongjing;YUE Minnan;LI Chun;MIAO Weipao;OU Huahao;HUANG Haoda(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Non-carbon Energy Conversion and Utilization Institute,Shanghai 200240,China)
出处
《动力工程学报》
北大核心
2025年第7期1020-1027,共8页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(52106262,52376204)
上海市IV类高峰学科-能源科学与技术-上海非碳基能源转换与利用研究院建设项目。
作者简介
俞洪静(2000-),女,江西南昌人,硕士研究生,研究方向为空气动力学,E-mail:yhjusst@163.com。
