| Kàrmàn涡街流场的定性分析研究 |
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| 引用本文： | 武作兵,凌国灿.Kàrmàn涡街流场的定性分析研究[J].空气动力学学报,1994(3). |
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| 作者姓名： | 武作兵 凌国灿 |
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| 作者单位： | 中国科学院力学研究所 |
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| 基金项目： | 国家自然科学基金资助项目。 |
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| 摘 要： | 本文在采用Ｒａｎｋｉｎｅ涡模型和冻结Ｏｓｅｅｎ涡模型消除Ｋａｒｍａｎ涡街流场的速度奇性后，对Ｋａｒｍａｎ涡街流场进行了拓扑结构分析。证明Ｋａｒｍａｎ涡街流场的自由驻点表现为中心和鞍点。随着空间多数的变化，流动结构可具有三种形式。
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| 关 键 词： | Karman涡街，拓扑结构，涡模型。 |
Theoretical Study on Topological Structure of Kaeman Vortex Street Flow Field |
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| Wu Zuobing, Ling Guocan.Theoretical Study on Topological Structure of Kaeman Vortex Street Flow Field[J].Acta Aerodynamica Sinica,1994(3). |
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| Authors: | Wu Zuobing Ling Guocan |
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| Abstract: | In this paper,the singularity of velocity in Karman vortexstreet is removed by using Rankine vortex model and frozen Oseen vortexmodel, and then the further of topological structure in Karman vortexstreet are analysed theoretically. It is demostrated that the free stag-nation points in Karman vortex street flow field consist of centers andsaddle points,and that the global structure may be described by threetypes, depending on the variation of spacial parameters. |
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| Keywords: | Karman vortex street Topological structure vortex model |
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