| Vibrational energy relaxation in shock-heated CO/N2/Ar mixtures | |
He, Dong ; Hong QZ(洪启臻); Pirani, Fernando; Li RJ(李仁杰); Li, Fei; Sun QH(孙泉华); Si T(司廷); Luo XS(罗喜胜)
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| Corresponding Author | Sun, Quanhua([email protected]) ; Si, Ting([email protected]) |
| Source Publication | JOURNAL OF CHEMICAL PHYSICS
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| 2024-06-14 | |
| Volume | 160Issue:22Pages:16 |
| ISSN | 0021-9606 |
| Abstract | Experimental and numerical studies were performed on the vibrational energy relaxation in shock-heated CO/N-2/Ar mixtures. A laser absorption technique was applied to the time-dependent rovibrational temperature time-history measurements. The vibrational relaxation data of reflected-shock-heated CO were summarized at 1720-3230 K. In shock-tube experiments, the rotational temperature of CO quickly reached equilibrium, whereas a relaxation process was found in the time-dependent vibrational temperature. For the mixture with 1.0% CO and 10.0% N-2, the vibrational excitation caused a decrease in the macroscopic thermodynamic temperature of the test gas. In the simulations, the state-to-state (StS) approach was employed, where the vibrational energy levels of CO and N-2 are treated as pseudo-species. The vibrational state-specific inelastic rate coefficients of N-2-Ar collisions were calculated using the mixed quantum-classical method based on a newly developed three-dimensional potential energy surface. The StS predictions agreed well with the measurements, whereas deviations were found between the Schwartz-Slawsky-Herzfeld formula predictions and the measurements. The Millikan-White vibrational relaxation data of the N-2-Ar system were found to have the most significant impact on the model predictions via sensitivity analysis. The vibrational relaxation data of the N-2-Ar system were then modified according to the experimental data and StS results, providing an indirect way to optimize the vibrational relaxation data of a specific system. Moreover, the vibrational distribution functions of CO and N-2 and the effects of the vibration-vibration-translation energy transfer path on the thermal nonequilibrium behaviors were highlighted. |
| DOI | 10.1063/5.0212823 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001250816400004 |
| WOS Keyword | CARBON-MONOXIDE ; CO ; DISSOCIATION ; KINETICS ; EXCHANGE ; LASER ; N-2 ; COMBUSTION ; MOLECULES ; NITROGEN |
| WOS Research Area | Chemistry ; Physics |
| WOS Subject | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| Funding Project | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620201] ; 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[12302391] ; National Natural Science Foundation of China[12388101] ; China Postdoctoral Science Foundation[2022M723233] |
| Funding Organization | Strategic Priority Research Program of the Chinese Academy of Sciences ; Frontier scientific research program of Deep Space Exploration Laboratory ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95767 |
| Collection | 高温气体动力学国家重点实验室 |
| Recommended Citation GB/T 7714 | He, Dong,Hong QZ,Pirani, Fernando,et al. Vibrational energy relaxation in shock-heated CO/N2/Ar mixtures[J]. JOURNAL OF CHEMICAL PHYSICS,2024,160,22,:16. |
| APA | He, Dong.,洪启臻.,Pirani, Fernando.,李仁杰.,Li, Fei.,...&罗喜胜.(2024).Vibrational energy relaxation in shock-heated CO/N2/Ar mixtures.JOURNAL OF CHEMICAL PHYSICS,160(22),16. |
| MLA | He, Dong,et al."Vibrational energy relaxation in shock-heated CO/N2/Ar mixtures".JOURNAL OF CHEMICAL PHYSICS 160.22(2024):16. |
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