摘要
为了提高风力机升力,使用商业Fluent计算软件,采用S-A湍流模型和Simple算法对NACA 0015叶片表面在低马赫数条件下设置微小圆柱进行数值模拟。结果表明:当攻角为18°时在距离叶片前缘0.1倍弦长、距离叶片表面0.04 m处设置直径为0.02 m的微小圆柱,可有效提高叶型升力、增加叶表流速、降低叶表压强、推迟叶片表面流动分离。
To increase the lift-force and decrease the drag-force of a blade is of important significance for turbomachinery.In order to improve the lift-force,the aerodynamic characteristics of the profile of NACA 0015 blade equipped with micro-cylinder on the surface of the blade have been investigated by numerical simulation of the flow fields around the blade under low Mach numbers.The S-A turbulent model and the simple algorithm were used in this numerical investigation by the fluent software.The result shows that by installing a small cylinder with a diameter of 0.02 m at the location where it is 0.1 times chord length distant from the blade leading edge,and 0.04 m distant from the blade surface at 18 degrees angle of attack,it could improve the profile-lift effectively,increase the surface flow rate,and meanwhile reduce the surface pressure and delay the flow separation.
作者
张玲
高胜强
Zhang Ling;Gao Shengqiang(School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第9期2456-2464,共9页
Acta Energiae Solaris Sinica
基金
吉林省自然科学基金(20170101116JC)
关键词
数值模拟
风力机
气动性能
流动分离
numerical simulation
wind turbines
aerodynamic performance
flow separation
作者简介
通信作者:张玲(1970—),女,博士,教授,主要流体机械内部流动与传热的数值方面的研究。175975108@qq.com
