Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H<sub>2</sub>

doi:10.1063/5.0176176

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H₂
	He, Dong 2,3; Hong QZ(洪启臻)2; Li F(李飞)2; Sun QH(孙泉华)1,2; Si, Ting 2,3; Luo XS(罗喜胜)2,3
刊名	JOURNAL OF CHEMICAL PHYSICS
	2023-12-21
卷号	159 期号:23 页码:16
ISSN号	0021-9606
DOI	10.1063/5.0176176
通讯作者	Sun, Quanhua(qsun@imech.ac.cn) ; Si, Ting(tsi@ustc.edu.cn)
英文摘要	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.
分类号	二类/Q1
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[12302391] ; China Postdoctoral Science Foundation[2021M703084] ; China Postdoctoral Science Foundation[2022M723233]
WOS关键词	VIBRATIONAL-RELAXATION ; SHOCK-TUBE ; CARBON-MONOXIDE ; LASER-ABSORPTION ; DISSOCIATION ; COMBUSTION ; MIXTURES ; SPECTROSCOPY ; RADIATION ; IGNITION
WOS研究方向	Chemistry ; Physics
语种	英语
WOS记录号	WOS:001126711900006
资助机构	Frontier scientific research program of Deep Space Exploration Laboratory ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
其他责任者	Sun, Quanhua ; Si, Ting
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93764]
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.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, 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, Deep Space Explorat Lab, Hefei 230026, Peoples R China;
推荐引用方式 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.
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.