| Accurate evaluation of equivalence ratio effect on chemiluminescence spectroscopy in hydrocarbon fuel flames: experimental measurement and numerical validation | |
Wang, Tao1; Zhou GX(周功喜)2 ; Wang, Xi3; Xu YX(许以欣)2; Cheng, Wan1; Li F(李飞)2
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| Corresponding Author | Zhou, Gongxi(zhougongxi@imech.ac.cn) |
| Source Publication | MEASUREMENT SCIENCE AND TECHNOLOGY
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| 2025-07-31 | |
| Volume | 36Issue:7Pages:15 |
| ISSN | 0957-0233 |
| Abstract | 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*. |
| Keyword | chemiluminescence spectrum equivalence ratio tomographic reconstruction |
| DOI | 10.1088/1361-6501/ade32c |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001517731800001 |
| WOS Keyword | HEAT RELEASE RATE ; CH-ASTERISK ; OH-ASTERISK ; DIFFUSION FLAME ; EMISSION ; CO2-ASTERISK ; OH(A) ; CH(A) |
| WOS Research Area | Engineering ; Instruments & Instrumentation |
| WOS Subject | Engineering, Multidisciplinary ; Instruments & Instrumentation |
| Funding Project | 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 |
| Funding Organization | 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 |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | 周功喜 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/101929 |
| Collection | 空天飞行高温气动全国重点实验室 |
| Affiliation | 1.Univ Sci & Technol China, Dept Modern Mech, Adv Prop Lab, Hefei 230026, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Beijing Inst Control & Elect Technol, Beijing 100032, Peoples R China |
| Recommended Citation 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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