| 细长体分离起始点的实验研究 |
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| 引用本文： | 夏雪湔,冯亚南,虞孝生,谢琦.细长体分离起始点的实验研究[J].空气动力学学报,1988(4). |
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| 作者姓名： | 夏雪湔 冯亚南 虞孝生 谢琦 |
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| 作者单位： | 北京航空学院
(夏雪湔，冯亚南，虞孝生)，北京航空学院(谢琦) |
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| 摘 要： | 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。
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| 关 键 词： | 分离 起始分离性质 表面分离流态 细长体 油流试验 |
AN EXPERIMENTAL INVESTIGATION OF THE STARTING POINT OF SEPARATION ON THE SLENDER BODIES |
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| Xia Xuejian Feng Yanan Yu Xiashen Xie Qi.AN EXPERIMENTAL INVESTIGATION OF THE STARTING POINT OF SEPARATION ON THE SLENDER BODIES[J].Acta Aerodynamica Sinica,1988(4). |
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| Authors: | Xia Xuejian Feng Yanan Yu Xiashen Xie Qi |
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| Institution: | Beijing institute of Aeronautics and Astronautics |
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| Abstract: | The starting separation on the slender bodies was investigated at the moderate angles of attack. The surface separation patterns of the slender bodies with different nose shape were visualized by using the surface oil flow technique. The starting separation behavior has been examined. In the present experiment the open separation was observed, and it seems that the open separation may start at an ordinary point. In addition, the spiral point at which a nose vortex creates or ends was also observed. It appears that the spiral point may be the starting point of the closed separation, and the starting point of the open separation with a singuarlity point either. |
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| Keywords: | separation starting separation behavior surface separa-tion pattern slender body oil flow test |
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