| 细长体空间涡系的观测 |
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| 引用本文： | 夏雪湔,虞孝生.细长体空间涡系的观测[J].空气动力学学报,1988(1). |
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| 作者姓名： | 夏雪湔 虞孝生 |
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| 作者单位： | 北京航空学院
(夏雪湔)，北京航空学院(虞孝生) |
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| 摘 要： | 本文用流态显示技术和空间总压测量,对于钝头和尖拱形头部两个细长旋成体模型在中等和大迎角状态的复杂背涡系进行了实验研究。侧重于“二次分离区”的流动观察和测量。实验表明:在中等迎角时细长体背风面上存在有一对二次涡,它们的旋转方向相反;靠外侧的一个涡尺度较大,其旋转方向与同侧主涡相同,当同侧主涡破裂时,它也发生破裂。随迎角进一步增加此涡呈现出从物面上间断地形成和脱落。
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| 关 键 词： | 旋涡流动 分离流 细长体 大迎角空气动力学 |
VISUALIZATION AND MEASUREMENT OF THE SPACE VORTEX SYSTEM ON SLENDER BODY |
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| Xia Xuejian Yu Xiaosheng.VISUALIZATION AND MEASUREMENT OF THE SPACE VORTEX SYSTEM ON SLENDER BODY[J].Acta Aerodynamica Sinica,1988(1). |
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| Authors: | Xia Xuejian Yu Xiaosheng |
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| Institution: | Beijing institute of Aeronautics and Astronautics |
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| Abstract: | The experimental investigation of complex leeside vortexsystem on slender body was conducted with flow visualization and total pressure,measurement.Except primary vortices two secondary vortices which rotated in oppsite directions each other were observed and measured.The outside secondary vortex had the rotating direction of pri mary vortex at same side,and broke as the primary vortex broke.At high angle of attack a spiral vortex instead of two secondary vortices formed and shed alternatively. |
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| Keywords: | vortex flow separated flow slender body aerodynamics at high angle of attack |
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