Study of Separated flow over bodies at high incidence with towing in air-filed chamber

采用拖曳抛物面机头或半球形机头模型，在气室中进行了大迎角飞行试验。在垂直于体轴和平行于体轴的平面上获得了PIV记录，以研究横截面上旋涡的详细结构。PIV研究证实，等间距的涡管在主涡周围形成涡环，并通过使用四氯化钛(TiCl4)的流动显示发现了相应的结构。

Experiments were made in an air chamber using a towing paraboloidal-nose or hemi-sphere nose model at high angles of attack. PIV recordings were obtained in planes both perpendicular to and parallel to the body axis to study detailed structure of the vortices in the cross-sections. It was confirmed by the PIV study that equally spaced vortex tubes forming vortex loops around the main vortex, and the corresponding structure was found by flow visualization using titaniumtetrachloride (TiCl4).