| 尾喷流底部流场与外流场干扰的拓扑结构数值模拟 |
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| 引用本文： | 郑忠华,陈伟芳,吴其芬.尾喷流底部流场与外流场干扰的拓扑结构数值模拟[J].国防科技大学学报,1998,20(3):18-22. |
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| 作者姓名： | 郑忠华 陈伟芳 吴其芬 |
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| 作者单位： | 国防科技大学航天技术系 |
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| 摘 要： | 本文从非定常全ＮＳ方程出发，运用时间推进方法，采用有限体积方法离散控制方程，模拟了轴对称钝锥尾喷流场与外流场的干扰，得到了随时间发展的精细的流场拓扑结构，并对几种出口压力比的不同情况进行了比较和分析。
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| 关 键 词： | 拓扑结构，极限环，浑沌现象，有限体积离散，时间推进法 |
| 收稿时间： | 1997/10/5 0:00:00 |
The Numerical Simulation of Topological Structure in the Based Flow of Jet wake with Disturbance of a Main Flowfield |
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| Zheng Zhonghu,Chen Weifang and Wu Qifen.The Numerical Simulation of Topological Structure in the Based Flow of Jet wake with Disturbance of a Main Flowfield[J].Journal of National University of Defense Technology,1998,20(3):18-22. |
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| Authors: | Zheng Zhonghu Chen Weifang and Wu Qifen |
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| Institution: | Department of Aerospace Technology, NUDT, Changsha, 410073;Department of Aerospace Technology, NUDT, Changsha, 410073;Department of Aerospace Technology, NUDT, Changsha, 410073 |
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| Abstract: | The numerical calculation of the unsteady full Navier-Stokes equations by means of time-marching is discussed in this thesis. To simulate jet wake and main flowfield's diturbance of axisymmetric blunt body, the finite volume method is used in the governing equations. The numerical results of time-marching give some fine topological structure of near wake. In addtion we make comparison and analysis in some different ratioes of pressure. |
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| Keywords: | topological structure limited ring chaotic phenomenon finitevolume time-marching method |
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