摘要
对NACA4424翼型及其对应的带有Gurney襟翼翼型修改后的翼型进行了数值计算,针对风力机应用,来流风速为2～16m/s,迎角为0°～20°;计算结果表明,在研究的所有条件下,修改后的钝尾缘翼型对流场有强烈的下洗作用,明显修改了翼型压力面和吸力面的压力分布,压力面压力更高,吸力面压力更低,因此翼型升力及升阻比均比翼型原型及单纯的Gurney襟翼翼型得到显著增加。
A numerical study of aerodynamic characteristics of NACA4424 airfoil and a modified airfoil was conducted which is designed through modifying the NACA4424 airfoil with a Gumey flap. For application to wind turbine, the coming wind speed is 2-16m/s; and the angle of attack is 0-20degrees. Computational results showed that a strong down-wash effect is produced by the modified airfoil with the blunt trailing-edge, which changes the pressure distribution on the pressure and suction surface significantly, the pressure on the pressure surface going higher and pressure on the suction surface lower, therefore compared with NACA4424 airfoil and responding airfoil with Gumey flap, the lift and lift-drag-ratio of the modified airfoil are enhanced remarkably.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2007年第9期988-991,共4页
Acta Energiae Solaris Sinica
基金
沈阳市科学计划基金(133064-1)
沈阳市科学计划基金(1053125-1-32)
