| 物面突变引起的二维分离流动的数值模拟 |
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| 引用本文： | 周伟江,马延文.物面突变引起的二维分离流动的数值模拟[J].空气动力学学报,1991,9(4):402-409. |
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| 作者姓名： | 周伟江 马延文 |
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| 作者单位： | 北京空气动力研究所
(周伟江)，北京空气动力研究所(马延文) |
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| 摘 要： | 本文用一个单步二阶精度格式,对由物体截面突变引起的二维超声速分离流动进行了数值模拟。计算了近尾迹流场,并详细研究了来流M数和Re数对绕后台阶分离流场结构的影响,得到了与理论和前人计算一致的结果。另外,对超声速绕竖舨流动进行了数值计算,给出了细致的流场结构图画。
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| 关 键 词： | 分离流 N－S方程 数值模拟 飞行器 |
NUMERICAL SIMULATION OF 2-D SEPARATED FLOWS CAUSED BY SUDDENLY CHANGE OF THE BODY SECTION |
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| Zhou Weijiang Ma Yanwen.NUMERICAL SIMULATION OF 2-D SEPARATED FLOWS CAUSED BY SUDDENLY CHANGE OF THE BODY SECTION[J].Acta Aerodynamica Sinica,1991,9(4):402-409. |
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| Authors: | Zhou Weijiang Ma Yanwen |
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| Institution: | Beijing Institute of Aerodynamics |
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| Abstract: | In this paper, the 2-D separated flows caused by suddenly change of the body section was studied with numerical solution of N-S equations. The differential equations were approximated with a one-step, two-order finite difference scheme developed in ref. 1-2]. Firstly, near wake flow was calculated. Secondly, the effect of Mach and Reynolds number of free stream on the flows around backward step was researched. The results agreed with theory and the data from other calculations. Finially, the flow field around a plate monuted perpendicularly on a flat plate was simulated, and details of flow structure was obtained clearly. |
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| Keywords: | separated flows N-S equations numerical simulation |
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