On-line measurement of species concentration in flow field of scramjet engine

ZHANG Zhen-rong; LI Guo-hua; YE Jing-feng; HU Zhi-yun; SHAO Jun; WANG Sheng

doi:10.3788/OPE.20162404.0709

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On-line measurement of species concentration in flow field of scramjet engine

更新时间：2020-08-13

- On-line measurement of species concentration in flow field of scramjet engine
- Optics and Precision Engineering Vol. 24, Issue 4, Pages: 709-713(2016)
- 作者机构：
  
  西北核技术研究所激光与物质相互作用国家重点实验室,陕西西安,710024
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162404.0709
  CLC： O437.3;TH744.4
- Received：21 December 2015，
  
  Revised：08 January 2016，
  
  Published：25 April 2016
- 稿件说明：
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张振荣, 李国华, 叶景峰等. 超燃发动机流场组分浓度的在线测量[J]. 光学精密工程, 2016,24(4): 709-713

ZHANG Zhen-rong, LI Guo-hua, YE Jing-feng etc. On-line measurement of species concentration in flow field of scramjet engine[J]. Editorial Office of Optics and Precision Engineering, 2016,24(4): 709-713
张振荣, 李国华, 叶景峰等. 超燃发动机流场组分浓度的在线测量[J]. 光学精密工程, 2016,24(4): 709-713 DOI： 10.3788/OPE.20162404.0709.

ZHANG Zhen-rong, LI Guo-hua, YE Jing-feng etc. On-line measurement of species concentration in flow field of scramjet engine[J]. Editorial Office of Optics and Precision Engineering, 2016,24(4): 709-713 DOI： 10.3788/OPE.20162404.0709.

摘要

为了正确评价超燃发动机试验状态

采用自发拉曼散射技术在线测量了超燃发动机流场的主要组分。基于发动机试验条件和发动机与光学诊断技术的接口

建立了用于发动机流场组分测量的自发拉曼散射实验系统;测量了多车次发动机试验过程中流场主要组分的拉曼光谱;最后

通过光谱计算获得了流场主要组分浓度信息并重点分析了来流氧气含量及其变化情况。实验显示:发动机试验中

部分车次试验补氧后的来流中氧气的最大含量达到了30%

最小含量为18%

说明发动机试验过程中

对补氧量的控制精确和稳定性还有待提高。结果表明:采用自发拉曼散射技术可以较好地完成来流主要组分浓度测量工作

测量结果可用于发动机试验数据的分析及来流补氧控制方式和控制精度的改进。

Abstract

To properly evaluate the experimental state of a scramjet engine

the Spontaneous Raman scattering technique was used to measure the main species in flow field of the scramjet engine. According to the engine experimental conditions and the interface of engine and optical diagnosis

a spontaneous Raman scattering experimental system for the engine flow field diagnosis was established. Then

the Raman spectra of the major species in the flow field of scramjet experiment were measured. Finally

the concentration of the major species was obtained by analyzing the Raman spectra

and the oxygen content of the incoming flow was emphatically analyzed. The results show that the maximum oxygen content and minimum oxygen content are 30% and 18% respectively in the incoming flow after oxygen supplementation. It means that the control precision and stability of oxygen supplementation in the scramjet experiment should be improved. The results also demonstrate that spontaneous Raman scattering technique works well for the species concentration measurements in the flow field

and obtained measurement results can be utilized for the analysis of scramjet experimental data and the improvement of the control method and control accuracy of oxygen supplementation for the incoming flow.

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Keywords

references

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