本文首先用实验表明了空气涡流器可以改善未分离和分离的附面层,其效果可与金属涡流器相比美。而后用荧光微丝法找到空气涡流器后的涡,并找出了涡的轨迹与强度随射流速比、射流侧射角等的变化情况。最后通过水洞中的观察初步弄清了空气涡流器涡的形成的机理,对空气涡流器的设计理论基础进行了一些探索。 This paper first experiments show that the air swirler can improve the non-separation and separation of the surface layer, the effect can be compared with the metal swirler. Fluorescence microfilament method was used to find the vortex after the air swirler, and the change of the trajectory and intensity of the vortex with the jet velocity ratio and jet side angle was found out. Finally, through the observation in the water hole, the formation mechanism of the air swirler vortex was initially clarified, and some theoretical bases for the design of the air swirler were explored.