论文部分内容阅读
为研究涡流发生器对风力机翼型DU93-W-210气动性能的影响,在有、无涡流发生器的情况下进行风洞实验。实验研究不同高度(4、6、8 mm)、不同安装角(16°、26°、36°)三角形涡流发生器的增升减阻效果。研究表明3种不同高度、安装角的涡流发生器均能使最大升力系数大幅提高,失速攻角推迟;失速前涡流发生器高度越大阻力越大,失速后3种高度涡流发生器均能大幅降低阻力。安装角越小线性段阻力越小,失速后使升阻比提高越多。
In order to study the influence of vortex generator on aerodynamic performance of airfoil DU93-W-210, wind tunnel experiment was carried out with and without vortex generator. Experimental study of different height (4,6,8 mm), different installation angle (16 °, 26 °, 36 °) triangular vortex generator drag reduction effect. The results show that the three types of vortex generators with different heights and installation angles can greatly increase the maximum lift coefficient and delay the angle of attack of the stalls. The vortex generator height before stalling is greater and the resistance is greater. After the stalling, Reduce resistance. The smaller the installation angle, the smaller the resistance of the linear section is, and the more the lift-drag ratio is increased after the stall.