| 化学非平衡流动对超燃冲压发动机尾喷管性能的影响 |
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| 引用本文： | 王新月,杨振鹏,王彦青.化学非平衡流动对超燃冲压发动机尾喷管性能的影响[J].航空动力学报,2009,24(5):1022-1027. |
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| 作者姓名： | 王新月 杨振鹏 王彦青 |
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| 作者单位： | 西北工业大学 动力与能源学院, 西安 710072 |
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| 摘 要： | 采用RNGk-ε湍流模型和有限体积方法数值求解有组分的守恒形式Navier-Stokes方程,针对设计的超声速燃烧冲压发动机单斜面膨胀喷管,采用氢氧七组元八反应模型,数值模拟不同高度、不同来流马赫数条件下的喷管流场和性能.计算结果表明,喷管内的进一步燃烧对燃烧室起到了一定的补燃作用,对喷管性能影响较大.化学非平衡状态下,喷管推力特性和升力特性显著提高.超燃冲压发动机尾喷管的性能研究,应考虑化学非平衡流动的影响.
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| 关 键 词： | 超燃冲压发动机 单斜面喷管 化学非平衡流动 冻结流动 |
| 收稿时间： | 2008/5/18 0:00:00 |
| 修稿时间： | 2008/12/15 0:00:00 |
Effects of non-equilibrium chemical reaction flow on the performance of scramjet nozzle |
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| WANG Xin-yue,YANG Zhen-peng and WANG Yan-qing.Effects of non-equilibrium chemical reaction flow on the performance of scramjet nozzle[J].Journal of Aerospace Power,2009,24(5):1022-1027. |
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| Authors: | WANG Xin-yue YANG Zhen-peng and WANG Yan-qing |
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| Institution: | School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | The RNG k-ε turbulence models and finite volume method were used to solve the conservative Reynolds-averaged Navier-Stokes equations.7-specice,8-step finite-rate chemical reaction models were employed to calculate the flow of the scramjet single expansion ramp nozzle.The characteristics of the nozzle were numerically studied under various free-stream Mach numbers and various flight heights.The calculation shows that the performances of the nozzle are notably advanced under the combustion in the nozzle.The non-equilibrium chemical reactions should always be considered in research of the performance of scramjet nozzle. |
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| Keywords: | scramjet engine single expansion ramp nozzle non-equilibrium chemical reaction flow frozen flow |
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