二元高超声速进气道的内压段设计

李航; 李博

二元高超声速进气道的内压段设计

李航^1,2,
李博¹

1.
南京航空航天大学能源与动力学院, 南京 210016
2.
中国人民解放军92724部队, 山东青岛 266000

基金项目: 南京航空航天大学基本科研业务费专项科研项目(NS2010040)

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出版历程
- 收稿日期: 2012-06-08
- 刊出日期: 2013-06-28

Internal contraction tunnel design of two-dimensional hypersonic inlet

LI Hang^1,2,
LI Bo¹

1.
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2.
Unit 92724, The Chinese People's Liberation Army, Qingdao Shandong 266000, China

摘要

摘要: 针对二元高超声速进气道,采用不同张度的样条曲线设计内压段肩部型面.在保持二元进气道内压段面积收缩比及喉道面积不变的条件下,通过数值仿真研究了不同内压段长度、下壁面型面样条曲线张度对进气道性能的影响.结果表明:内压段的长度变化对进气道的气动及起动性能有较大影响,当内压段长度与喉道高度比 L/h_t为8.4左右时总压恢复系数较优;采用合适张度的样条曲线代替传统的肩部圆弧过渡,能够提高进气道总压恢复系数,改善进气道起动性能;随着内压段长度增加,其所对应的性能最优样条线张度值不断减小,建议选取样条线张度值为0.80~1.25.
- 进气道性能 /
- 型面设计 /
- 内压段 /
- 高超声速进气道 /
- 数值仿真
Abstract: The curved surface of internal contraction tunnel of two-dimensional hypersonic inlet was designed and investigated.Based on hypersonic inlet with the same internal contraction area ratio and throat area,the influences of the length of internal contraction tunnel and the tension of the shoulder spline on the inlet performance were studied numerically.Results indicate that the length of internal contraction tunnel has great effect on the total pressure recovery coefficient and the starting-up Mach number.When the length to throat height ratio is 8.4,the total pressure recovery coefficient is better.Spline with suitable tension to replace the traditional surface with radii at shoulder can increase the total pressure recovery coefficient.With the increase of the length of internal contraction tunnel,the corresponding optimal tension of spline will decrease.The recommended range of spline tension is 0.80-1.25.
- performance of inlet /
- profile design /
- internal contraction tunnel /
- hypersonic inlet /
- numerical simulation

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参考文献(15)

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