射流参数对风力机叶片气动性能的影响  

Effect of Jet Parameters on the Aerodynamic Performance for the Wind Turbine Blade

作　　者：王龙[1] 李亮[1] 孙伦业[1] 王传礼[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《流体机械》2017年第7期28-33,6,共7页Fluid Machinery

基　　金：安徽省自然科学基金资助项目(1708085QE123;1708085QA17;1508085QE94);安徽理工大学青年教师科学研究基金资助项目(12664);安徽理工大学引进人才科研启动基金资助项目(ZY041)

摘　　要：大攻角来流条件下风力机叶片尾缘处会出现严重流动分离现象,导致叶片输出功率降低,采用计算流体力学方法研究开缝分布位置及喷射角度对风力机叶片性能的影响。结果表明:射流位置参数在改善流场中作用显著,随着开缝位置坐标后移,其升力系数逐渐降低。在流场恶劣条件下,喷射角度参数对升力系数提升作用有限,2°喷射角度的性能相对较好。射流位置不超过X=0.7时,均可减弱回流区影响范围、提高升力系数。射流可以扫掠附面层低能流体,有利于削弱大尺度涡旋结构及尾缘涡,有利于提高风力机叶片设计研究水平。At the high angles of attack,there is a serious flow separation phenomenon for the wind turbine blade,with reducing the power generation efficiency of wind turbines.The impact was studied on the wind turbine blade performance with slotted position and jet angle changed,using computational fluid dynamics.The results show：The effect of jet positional could be remarkable,and occupy an important position.With slotted position moved,the lift coefficient decreased.When the position did not exceed X = 0.7,the jet can weaken the influence of recirculation zone.The increase of lift coefficient was limited with jet angle in harsh flow filed.When the jet angle was 2 degree,its performance was better.Jet can sweep low energy fluid in the boundary layer,Strongly weaken large-scale vortex structure and trailing edge eddypowerfully improve the design of wind turbine blades.

关 键 词：射流 风力机叶片 计算流体力学 附面层控制 

分 类 号：TH3[机械工程—机械制造及自动化] TK83[动力工程及工程热物理—流体机械及工程]