| 后掠压缩斜板进气道进口流场数值研究 |
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| 引用本文： | 朱宇,李椿萱,李天.后掠压缩斜板进气道进口流场数值研究[J].航空动力学报,2003,18(1):8-14. |
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| 作者姓名： | 朱宇 李椿萱 李天 |
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| 作者单位： | 1.北京航空航天大学国家计算流体动力学实验室,北京100083 |
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| 摘 要： | 对一种后掠压缩斜板进气道(Caret进气道)的进口激波结构、进口流动对管道后部流场的影响进行了数值分析,对进口倒圆修形的影响、激波覆盖面也进行了讨论。数值模拟采用N-S方程和标准k-ε模型加壁面函数方法。计算结果表明:超音速情况下,由于进口存在较强的正激波,进口斜激波强度的不均匀性,对管道内部流动看不出有明显的不利影响;但两压缩面交角处的流动对管道后部流场有较大的影响。
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| 关 键 词： | 航空、航天推进系统 进气道 数值模拟 激波 后掠压缩面 双斜切双压缩面 |
| 文章编号： | 1000-8055(2003)01-0008-07 |
| 收稿时间： | 2001/12/25 0:00:00 |
| 修稿时间： | 2001年12月25 |
Numerical Investigation of Inlet with Swept Compress Ramp |
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| ZHU Yu,LEE Chun-hian and LI Tian.Numerical Investigation of Inlet with Swept Compress Ramp[J].Journal of Aerospace Power,2003,18(1):8-14. |
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| Authors: | ZHU Yu LEE Chun-hian and LI Tian |
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| Institution: | 1.Beijing University of Aeronautics and Astronautics,Beijing100083,China2.Shenyang Aircraft Design Research Institute,Shenyang110035,China |
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| Abstract: | A numerical investigation was conducted about the shock structure at the entrance of the inlets and the effects of entrance flows on aft duct flowfields for a Caret inlet,and also the effect of the fillet circle and shielding region of oblique shocks.N S equations with the standard k-εturbulence model and near wall functions were employed to predict the flowfields.The results showed that asymmetry of oblique shock doesn't affect evidently duct flow due to the existence of strong normal shock.But the flow in the intersection of dual ramp affects evidently the flowfield of aft duct. |
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| Keywords: | aerospace propulsion inlet numerical simulation shock swept-ramp caret |
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