摘要
传统的水平轴风力机一直在沿用螺旋桨，并使用“压气机”类叶片的叶型，故作功能力不高。将目前广泛使用的风力机桨叶翼型FFA-W3-211的弯度加大，一是在其尾缘加装高度为4％弦长的格尼（Gumey）襟翼；另一是改变压力面的形状，显著增加其弯度。并在小型低速风洞中对装有不扭曲直桨叶的风力机模型进行了一系列对比吹风实验，风速范围8～15m／s，安装角6°-14°。实验结果表明，在各种条件下，风力机的风能利用系数依次为：装了大弯度翼型的桨叶、格尼襟翼和原型直桨叶风力机。
Conventional wind turbines with horizontal axis generally use propellers with compressor type profiles and therefore posses but a low work output ability. The camber of the widely used FFA-W3-211 airfoil is markedly being enlarged by adding a Gurney flap of 4% chord length to its trailing edge and by changing the shape of the pressure surface. A number of comparison tests were conducted a small low-speed wind tunnel and using a wind turbine model fitted with twist lest straight er blade. The tests were conducted for installation angles between 6-14 ℃ and a wind velocity range of 8-15 m/s. Test results show that under all conditions the wind power utilization factors of the tested wind turbines are in the following sequence （from !arge to small）： propeller fitted with airfoil possessing a large camber, fitted with added Gumey flap and the original wind turbine propeller. Figs 5 and refs 8.
出处
《动力工程》
EI
CSCD
北大核心
2007年第1期136-139,共4页
Power Engineering
基金
沈阳市科学计划基金(1033064-1)
关键词
能源系统工程
水平轴风力机
风能利用系数
翼型弯度
格尼襟翼
energy system engineering
wind turbine with horizontal axis
wind power utilization factor
airfoil＇ s camber
Gurney flap
