| 一种高超声速进气道起动/再起动的数值研究 |
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| 引用本文： | 李璞,郭荣伟.一种高超声速进气道起动/再起动的数值研究[J].航空动力学报,2010,25(5):1049-1055. |
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| 作者姓名： | 李璞 郭荣伟 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,南京210016 |
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| 摘 要： | 对一种定几何轴对称高超声速进气道的起动过程、来流马赫数引起的不起动和再起动过程的非定常流态进行了数值研究,分析了唇罩侧板后掠对进气道起动/再起动性能的影响.结果表明:唇罩侧板后掠形成了横向溢流,缓解了捕获流量和进气道流通能力之间的矛盾,从而改善了进气道的起动/再起动性能;内收缩段内的激波与边界层的干扰较强,成为进气道起动的瓶颈.
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| 关 键 词： | 轴对称高超声速进气道 起动 再起动 数值分析 |
| 收稿时间： | 2009/4/10 0:00:00 |
| 修稿时间： | 2010/2/23 0:00:00 |
Numerical simulation of the start and restart performance of a hypersonic inlet |
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| LI Pu and GUO Rong-wei.Numerical simulation of the start and restart performance of a hypersonic inlet[J].Journal of Aerospace Power,2010,25(5):1049-1055. |
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| Authors: | LI Pu and GUO Rong-wei |
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| Affiliation: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | An unsteady numerical simulation was carried out on the start, unstart and restart performances of a fixed-geometry, axisymmetric hypersonic inlet due to changing free stream Mach number. The influence of cut-back side walls of the cowl on the characteristics of start and restart was analyzed. The results show that, the contradiction between captured mass flow and the flow capacity of the inlet is mitigated by lateral spillage in front of the cut-back side walls of the cowl, which improves the performance of start and restart. The strong interaction between shock wave and boundary layer in the internal duct is like a bottleneck to the start of the inlet. |
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| Keywords: | axisymmetric hypersonic inlet start restart numerical analysis |
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