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Development of interference-free rotational and vibrational thermometry for studies on shock-heated thermochemical non-equilibrium CO

文献类型：期刊论文

作者He, Dong2; Si, Ting2; Li, Fei1; Luo, Xisheng1,2; Li F(李飞)
刊名MEASUREMENT SCIENCE AND TECHNOLOGY
出版日期2023-12-01
卷号34期号:12页码:14
ISSN号0957-0233
关键词rotational temperature vibrational temperature shock tube TDLAS CO
DOI10.1088/1361-6501/acf605
通讯作者Si, Ting(tsi@ustc.edu.cn)
英文摘要A mid-infrared interference-free laser absorption technique for simultaneously measuring rotational temperature, vibrational temperature, and CO concentration was developed for application to shock-tube studies on thermochemical non-equilibrium CO over 1000-3000 K. Three transition lines in the fundamental vibrational band of CO (P(0, 21), near 4.87 mu m, P(1, 21), near 4.93 mu m, and P(0, 37), near 5.05 mu m) were selected. The P(0, 21)/P(1, 21) line pair was used for vibrational temperature measurements whereas the P(0, 21)/P(0, 37) line pair was used for rotational temperature measurements. Spectroscopic parameters for developing the technique were measured: line strengths and collisional broadening data in Ar were obtained at 1040-2940 K. Validation experiments for the thermometry system were performed in shock-heated thermal-equilibrium CO/Ar mixtures at 1050-3010 K and 1.1-2.8 bar. The time-dependent rotational and vibrational temperatures were measured during the vibrational relaxation processes of CO. The technique showed high sensitivity in detecting the rotational and vibrational temperatures. The measured rotational temperature agreed well with the temperature calculated using the measured pressure and isentropic relationship. The measured vibrational temperature showed good agreement with the predictions using the Landau and Teller theory and Millikan and White relationship. The time-dependent CO concentration during the oxidation processes of n-heptane over a wide temperature range (1350-2750 K) was measured considering n-heptane as one of the alternative fuels for the scramjet. The interference-free laser absorption strategy showed good flexibility in detecting the CO concentration at ultra-high temperatures. The measured results showed overall good agreement with the predictions from two detailed mechanisms and one skeletal mechanism. The reactivity of n-heptane was found to be insensitive to the temperature increase at ultra-high temperatures (> 2100 K).
WOS关键词LASER-ABSORPTION SPECTROSCOPY ; CARBON-MONOXIDE ; TEMPERATURE ; COMBUSTION ; OXIDATION ; ISOTOPOLOGUES ; RELAXATION ; RADIATION ; SYSTEMS ; TUBE
资助项目frontier scientific research program of Deep Space Exploration Laboratory[2022-QYKYJH-HXYF-019] ; National Natural Science Foundation of China[12027801] ; National Natural Science Foundation of China[11621202] ; China Postdoctoral Science Foundation[2021M703084] ; Provincial Natural Science Foundation of Anhui[2208085QE162] ; Fundamental Research Funds for the Central Universities[WK2090000043]
WOS研究方向Engineering ; Instruments & Instrumentation
语种英语
WOS记录号WOS:001065927900001
资助机构frontier scientific research program of Deep Space Exploration Laboratory ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Provincial Natural Science Foundation of Anhui ; Fundamental Research Funds for the Central Universities
源URL[http://dspace.imech.ac.cn/handle/311007/93099]  
专题力学研究所_高温气体动力学国家重点实验室
通讯作者Si, Ting
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
2.Univ Sci & Technol China, Dept Modern Mech, Deep Space Explorat Lab, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 He, Dong,Si, Ting,Li, Fei,et al. Development of interference-free rotational and vibrational thermometry for studies on shock-heated thermochemical non-equilibrium CO[J]. MEASUREMENT SCIENCE AND TECHNOLOGY,2023,34(12):14.
APA He, Dong,Si, Ting,Li, Fei,Luo, Xisheng,&李飞.(2023).Development of interference-free rotational and vibrational thermometry for studies on shock-heated thermochemical non-equilibrium CO.MEASUREMENT SCIENCE AND TECHNOLOGY,34(12),14.
MLA He, Dong,et al."Development of interference-free rotational and vibrational thermometry for studies on shock-heated thermochemical non-equilibrium CO".MEASUREMENT SCIENCE AND TECHNOLOGY 34.12(2023):14.

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来源：力学研究所

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