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本文实验研究了细长体模型在中等迎角下的初始分离问题。观察了不同头部形状的细长体在不同迎角下的分离流态。考察并分析了分离起始点的性质。观察到开式分离的存在,实验结果分析认为开式分离可以起始于正常点。此外,在钝头和尖头模型上都出现了螺旋点形式的头部涡。它们或是闭式分离的起始点,或是奇点型开式分离的起始点。
This paper experimentally studies the initial separation problem of the slender body model at a medium angle of attack. The flow patterns of slender bodies with different head shapes at different angles of attack were observed. Investigated and analyzed the nature of the starting point of separation. The existence of open separation was observed. The experimental results suggested that open separation could start at normal point. In addition, head vortices in the form of spiral points appear on blunt and pointed models. They are either the starting points for closed separations or the starting point for singular open separations.