| Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H2 | |
He, Dong1,2 ; Hong QZ(洪启臻)2; Li F(李飞)2; Sun QH(孙泉华)2,3; Si, Ting1,2; Luo XS(罗喜胜)1,2
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| Corresponding Author | Sun, Quanhua([email protected]) ; Si, Ting([email protected]) |
| Source Publication | JOURNAL OF CHEMICAL PHYSICS
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| 2023-12-21 | |
| Volume | 159Issue:23Pages:16 |
| ISSN | 0021-9606 |
| Abstract | The time-dependent rotational and vibrational temperatures were measured to study the shock-heated thermal nonequilibrium behaviors of CO with Ar, He, and H-2 as collision partners. Three interference-free transition lines in the fundamental vibrational band of CO were applied to the fast, in situ, and state-specific measurements. Vibrational relaxation times of CO were summarized over a temperature range of 1110-2820 K behind reflected shocks. The measured rotational temperature instantaneously reached an equilibrium state behind shock waves. The measured vibrational temperature experienced a relaxation process before reaching the equilibrium state. The measured vibrational temperature time histories were compared with predictions based on the Landau-Teller model and the state-to-state approach. The state-to-state approach treats the vibrational energy levels of CO as pseudo-species and accurately describes the detailed thermal nonequilibrium processes behind shock waves. The datasets of state-specific inelastic rate coefficients of CO-Ar, CO-He, CO-CO, and CO-H-2 collisions were calculated in this study using the mixed quantum-classical method and the semiclassical forced harmonic oscillator model. The predictions based on the state-to-state approach agreed well with the measured data and nonequilibrium (non-Boltzmann) vibrational distributions were found in the post-shock regions, while the Landau-Teller model predicted slower vibrational temperature time histories than the measured data. Modifications were applied to the Millikan-White vibrational relaxation data of the CO-Ar and CO-H-2 systems to improve the performance of the Landau-Teller model. In addition, the thermal nonequilibrium processes behind incident shocks, the acceleration effects of H2O on the relaxation process of CO, and the characterization of vibrational temperature were highlighted. |
| DOI | 10.1063/5.0176176 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001126711900006 |
| WOS Keyword | VIBRATIONAL-RELAXATION ; SHOCK-TUBE ; CARBON-MONOXIDE ; LASER-ABSORPTION ; DISSOCIATION ; COMBUSTION ; MIXTURES ; SPECTROSCOPY ; RADIATION ; IGNITION |
| WOS Research Area | Chemistry ; Physics |
| WOS Subject | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| Funding Project | 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] ; China Postdoctoral Science Foundation[2021M703084] ; China Postdoctoral Science Foundation[2022M723233] |
| Funding Organization | 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 |
| Contributor | Sun, Quanhua ; Si, Ting |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/93765 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Univ Sci & Technol China, Dept Modern Mech, Deep Space Explorat 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.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | He, Dong,Hong QZ,Li F,et al. Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H2[J]. JOURNAL OF CHEMICAL PHYSICS,2023,159,23,:16.Rp_Au:Sun, Quanhua, Si, Ting |
| APA | He, Dong,洪启臻,李飞,孙泉华,Si, Ting,&罗喜胜.(2023).Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H2.JOURNAL OF CHEMICAL PHYSICS,159(23),16. |
| MLA | He, Dong,et al."Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H2".JOURNAL OF CHEMICAL PHYSICS 159.23(2023):16. |
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| Jp2023Fa308.pdf（5968KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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