| 涡判据在孔腔涡旋流动拓扑结构分析中的应用 |
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| 引用本文： | 胡子俊,张楠,姚惠之,杨子轩.涡判据在孔腔涡旋流动拓扑结构分析中的应用[J].船舶力学,2012(8):839-846. |
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| 作者姓名： | 胡子俊 张楠 姚惠之 杨子轩 |
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| 作者单位： | 1. 中国船舶科学研究中心,江苏无锡,214082
2. 清华大学工程力学系,北京,100084 |
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| 摘 要： | 涡作为一种经典的流动现象目前仍没有严格的数学定义,涡判据是人们识别涡的重要途径。文章对涡的各种判据及其物理意义进行了调研和总结,并将目前较为常用的Q判据和λ2判据应用于二维和三维孔腔流动中涡的识别,并对其拓扑结构进行了分析,得到了有意义的结果。
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| 关 键 词： | 涡判据 涡旋 拓扑结构 孔腔 |
Vortex identification in the analysis on the topology structure of vortical flow in cavity |
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| HU Zi-jun
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ZHANG Nan
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YAO Hui-zhi
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YANG Zi-xuan.Vortex identification in the analysis on the topology structure of vortical flow in cavity[J].Journal of Ship Mechanics,2012(8):839-846. |
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| Authors: | HU Zi-jun ZHANG Nan YAO Hui-zhi YANG Zi-xuan |
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| Institution: | 1 China Ship Scientific Research Center,Wuxi 214082,China;2 Department of Mechanics,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Vortex which is a classical flow pattern has not a strict mathematical definition so far,and vortex identification is still an important approach to distinguish them.Different vortex identifications and physical meaning are summarized in this paper as well as the Q and λ2 identifications are employed to distinguish the actual various vortices in the cavity and analyze the topologic structure of vortices,the good results are obtained. |
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| Keywords: | vortex identification vortex topologic structure cavity |
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