讨论了通过油流显示图像的分析，自动探测表面流线方位的可能性。
A possibility of automatic detection of the surface streamline position by analysing the oil visualisation images is discussed.
而且液晶也反映了表面流线，分离区内的涡流和管道流动的角效应。
Besides, it can also give understanding of the surface streamlines, vortices in separation region and the corner effect of duct flow.
优选的，所述壳体的表面流线型由头部到尾部逐渐收缩，所述后开口围绕所述壳体的中心线对称分布。
Preferably, the streamline surface of the shell is gradually shrunk from the head to the tail, and the rear openings are symmetrically distributed around the Central Line of the shell.
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