| 几何高度对RBCC发动机超声速侧压式进气道起动性能的影响 |
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| 引用本文： | 刘晓伟,何国强,刘佩进. 几何高度对RBCC发动机超声速侧压式进气道起动性能的影响[J]. 航空动力学报, 2010, 25(8): 1799-1804 |
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| 作者姓名： | 刘晓伟 何国强 刘佩进 |
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| 作者单位： | 西北工业大学 动力与能源学院燃烧、流动和热结构国家重点实验室, 西安 710072 |
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| 摘 要： | 对两类典型的侧压式进气道在来流Ma=1.5～5.0范围内的起动性能开展数值模拟研究,研究了几何高度对进气道性能的影响.研究发现:不同高度的进气道起动过程所表现出来的流场特征差别较大,对于合适的高度,进气道未起动时的性能大为改善,起动过程的性能变化趋于平缓,起动马赫数较小（存在最小值）,此时进气道具有较好的起动性能并能在来流马赫数小于自起动马赫数时较好工作.
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| 关 键 词： | RBCC(火箭基组合循环)发动机 侧压式进气道 进气道起动 数值模拟 起动性能 |
| 收稿时间： | 2009-07-07 |
| 修稿时间： | 2009-10-10 |
Influence of height on the starting performance of RBCC engine supersonic sidewall-compression inlet |
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| LIU Xiao-wei,HE Guo-qiang and LIU Pei-jin. Influence of height on the starting performance of RBCC engine supersonic sidewall-compression inlet[J]. Journal of Aerospace Power, 2010, 25(8): 1799-1804 |
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| Authors: | LIU Xiao-wei HE Guo-qiang LIU Pei-jin |
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| Affiliation: | National Key Laboratory of Combustion, Flow and Thermo-Structure, School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | The starting performances of two typical supersonic sidewall-compression inlets were investigated from Mach number 1.5 to 5.0 by means of numerical simulation.The influence of height on performance was studied.The investigation shows that the flow features of inlets with different heights differ a lot during the starting process.For a proper height,the inlet performance prior to startup is improved significantly,oscillations of performance parameters become weaker,and the self-starting Mach number is smaller(a minimum value exists).In such case,the inlet with this height has a better starting performance,and can operate well when the incoming Mach number is less than self-starting Mach number. |
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| Keywords: | RBCC(rocket based combined cycle) engine sidewall-compression inlet inlet starting numerical simulation starting performance |
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