来流速度5~7 km/s时CO2流场中CO离解现象的验证

doi:10.7527/S1000-6893.2022.27723

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来流速度5~7 km/s时CO₂流场中CO离解现象的验证

廖东骏(), 石安华, 黄洁, 简和祥, 谢爱民, 王宗浩

中国空气动力研究与发展中心超高速空气动力研究所，绵阳 621000

收稿日期:2022-06-30 修回日期:2022-07-27 接受日期:2022-08-17 出版日期:2022-12-25 发布日期:2022-08-31
通讯作者: 廖东骏 E-mail:tigers717@126.com

Validation of dissociation of CO in CO₂ flowfield with flow velocity from 5 to 7 km/s

Dongjun LIAO(), Anhua SHI, Jie HUANG, Hexiang JIAN, Aimin XIE, Zonghao WANG

Hypervelocity Aerodynamics Institute，China Aerodynamics Research and Development Center，Mianyang 621000，China

Received:2022-06-30 Revised:2022-07-27 Accepted:2022-08-17 Online:2022-12-25 Published:2022-08-31
Contact: Dongjun LIAO E-mail:tigers717@126.com

摘要/Abstract

摘要：

为验证CO₂中流动速度5~7 km/s时，流场中CO离解导致化学反应产物发生变化的推论，在中国空气动力研究与发展中心超高速空气动力研究所的弹道靶设备上开展了CO₂中自由飞圆球流场光谱的测量试验。测量数据表明，流动速度约5~7 km/s时，CO₂流场中观测到了显著的C₂ Swan带特征辐射谱。组分C₂生成是组分CO离解的结果之一，验证了该速度范围内组分CO发生离解的推论。根据试验状态开展热化学非平衡流场与辐射光谱数值计算，也得到了组分C₂显著生成的结果，再现的流场辐射光谱与试验测量数据偏差约在1个数量级以内，进一步验证了组分CO发生离解推论的合理性。

关键词: 非平衡流动, 组分, 光谱辐射强度, 弹道靶, CO₂

Abstract:

To validate the deduction that the chemical reaction products change due to the dissociation of CO in flowfield with flow velocity from 5 km/s to 7 km/s in CO₂， flowfield spectrum over free-flight spheres in CO₂ has been measured in the ballistic range facility of Hypervelocity Aerodynamics Institute， China Aerodynamics Research and Development Center. It is revealed from the test data that the obvious C₂ Swan band characteristic spectrum has been observed in CO₂ flowfield with flow velocity ranging from about 5 km/s to 7 km/s. The produce of specie C₂ is one of the results of the dissociation of specie CO， which validate the deduction of the dissociation of specie CO within the corresponding velocity range. Theromchemical non-equilibrium flowfield and radiation spectrum have been numerical calculated based on the test conditions， which also come to the results that specie C₂ has significantly generated. The difference between the reproduced flowfield spectrum and test data is less than approximately one order of magnitude， which further validate the reasonability of the deduction of the dissociation of specie CO.

Key words: non-equilibrium flow, specie, spectral radiation intensity, ballistic range, CO₂

中图分类号:

V211.7

廖东骏, 石安华, 黄洁, 简和祥, 谢爱民, 王宗浩. 来流速度5~7 km/s时CO₂流场中CO离解现象的验证[J]. 航空学报, 2022, 43(S2): 106-114.

Dongjun LIAO, Anhua SHI, Jie HUANG, Hexiang JIAN, Aimin XIE, Zonghao WANG. Validation of dissociation of CO in CO₂ flowfield with flow velocity from 5 to 7 km/s[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(S2): 106-114.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

试验编号	靶室压力P/kPa	靶室温度T/K	模型速度V/（km·s^-1）	马赫数Ma	双尺度参数ρR/（kg·m^-2）
1	11.57	294.55	5.130	18.9	6.24×10^-4
2	11.52	293.15	6.513	24.0	6.24×10^-4
3	11.50	292.95	7.552	27.8	6.23×10^-4

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来流速度5~7 km/s时CO₂流场中CO离解现象的验证

Validation of dissociation of CO in CO₂ flowfield with flow velocity from 5 to 7 km/s

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