摘要
为了研究涡发生器对风力机专用翼型气动性能的影响,采用数值模拟的方法对带涡发生器风力机的翼型进行了数值计算.首先对具有试验数据的带涡发生器翼型进行了数值计算,验证了计算方法的可行性;然后采用该计算设置对所要研究的风力机翼型在多个攻角下的情况进行了计算.结果表明:在小攻角下当翼型未发生流动分离时,涡发生器可能使翼型升阻比降低;当攻角增大,翼型发生流动分离时,涡发生器可以有效推迟流动分离,增大失速攻角,提高升阻比.
In order to study the influences of vortex generators on the aerodynamic performances of the airfoil of wind turbine,the numerical simulation method was adopted to calculate the airfoil of wind turbine with vortex generators.Firstly,the airfoil with vortex generators with experimental data was simulated and calculated,the computing method was feasible by testing.Then adopting the computing sets,the airfoil of wind turbine was calculated under multiple attack angles.The computing results show that vortex generators make the lift-drag ratio of airfoil decrease when the airfoil does not occur flow separation under little attack angles,and when the airfoil occurs flow separation under big attack angles,the vortex generators can effectively delay the flow separation,increase the stall angles and the lift-drag ratio.
出处
《华北水利水电大学学报（自然科学版）》
2015年第2期58-62,共5页
Journal of North China University of Water Resources and Electric Power：Natural Science Edition
基金
河南省重点科技攻关计划项目(142102210059)
关键词
涡发生器
风力机
翼型
绕流场
vortex generators
wind turbine
airfoil
flow field
