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Accurate evaluation of equivalence ratio effect on chemiluminescence spectroscopy in hydrocarbon fuel flames: experimental measurement and numerical validation

文献类型：期刊论文

作者Wang, Tao3; Zhou GX(周功喜)2; Wang, Xi1; Xu YX(许以欣)2; Cheng, Wan3; Li F(李飞)2
刊名MEASUREMENT SCIENCE AND TECHNOLOGY
出版日期2025-07-31
卷号36期号:7页码:15
关键词chemiluminescence spectrum equivalence ratio tomographic reconstruction
ISSN号0957-0233
DOI10.1088/1361-6501/ade32c
通讯作者Zhou, Gongxi(zhougongxi@imech.ac.cn)
英文摘要Herein, experimental and numerical studies were conducted on the excited-state radicals CO2*, CH*, OH*, and C2* in hydrocarbon combustion. In the experiment, an optical fiber spectrometer was employed to perform one-dimensional scanning measurements of chemiluminescent signals in methane/air laminar premixed flames with equivalence ratios ranging from 0.7 to 1.2, capturing the emission spectra of the excited-state radicals. Based on the Abel tomographic reconstruction method, the relationships between the peak chemiluminescence intensity, the peak chemiluminescence intensity ratios, and equivalence ratios of the excited-state radicals were quantitatively investigated. The findings reveal that CO2* radiation significantly influences the measurement of the chemiluminescence intensities of OH*, CH*, and C2*. The CO2* emission interference is quantitatively decoupled through spectral deconvolution, enabling a novel chemiluminescence-based equivalence ratio diagnostic. Calibrated against premixed flames, the C2*/OH* and CH*/OH* intensity ratios exhibit monotonic correlations with equivalence ratios in 0.7-0.9 and 0.9-1.2 regimes, respectively. Finally, the existing chemical reaction mechanisms for OH*, CH*, and C2* were validated based on the experimental results. It mainly focuses on the relationship between the peak chemiluminescence intensity, the peak chemiluminescence intensity ratios, and the equivalence ratios. Among the existing reaction mechanisms for excited-state radicals, the simulation accuracy for CH* is the highest, while further research is required to refine the chemical reaction mechanisms for OH* and C2*.
分类号二类/Q1
WOS关键词HEAT RELEASE RATE ; CH-ASTERISK ; OH-ASTERISK ; DIFFUSION FLAME ; EMISSION ; CO2-ASTERISK ; OH(A) ; CH(A)
资助项目The Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620202] ; The Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1050000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[92271117] ; National Natural Science Foundation of China[12388101] ; Basic Science Center of the National Natural Science Foundation of China[Y2022008] ; Youth Innovation Promotion Association CAS
WOS研究方向Engineering ; Instruments & Instrumentation
语种英语
WOS记录号WOS:001517731800001
资助机构The Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Basic Science Center of the National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
其他责任者周功喜
源URL[http://dspace.imech.ac.cn/handle/311007/101928]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Beijing Inst Control & Elect Technol, Beijing 100032, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China;
3.Univ Sci & Technol China, Dept Modern Mech, Adv Prop Lab, Hefei 230026, Peoples R China;
推荐引用方式
GB/T 7714		 Wang, Tao,Zhou GX,Wang, Xi,et al. Accurate evaluation of equivalence ratio effect on chemiluminescence spectroscopy in hydrocarbon fuel flames: experimental measurement and numerical validation[J]. MEASUREMENT SCIENCE AND TECHNOLOGY,2025,36(7):15.
APA Wang, Tao,周功喜,Wang, Xi,许以欣,Cheng, Wan,&李飞.(2025).Accurate evaluation of equivalence ratio effect on chemiluminescence spectroscopy in hydrocarbon fuel flames: experimental measurement and numerical validation.MEASUREMENT SCIENCE AND TECHNOLOGY,36(7),15.
MLA Wang, Tao,et al."Accurate evaluation of equivalence ratio effect on chemiluminescence spectroscopy in hydrocarbon fuel flames: experimental measurement and numerical validation".MEASUREMENT SCIENCE AND TECHNOLOGY 36.7(2025):15.

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来源：力学研究所

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