How much does thermal nonequilibrium influence the overall atomic recombination during de-excitation?

doi:10.1016/j.chemphys.2024.112220

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

	How much does thermal nonequilibrium influence the overall atomic recombination during de-excitation?
	Gu, Sangdi 1; Hao, Jiaao 1; Wen, ChihYung 1; Hong QZ(洪启臻)2; Wang Q(汪球)2
刊名	CHEMICAL PHYSICS
	2024-04-01
卷号	580 页码:11
关键词	Thermochemical nonequilibrium Atomic recombination High -enthalpy flows
ISSN号	0301-0104
DOI	10.1016/j.chemphys.2024.112220
通讯作者	Gu, Sangdi(sangdi.gu@polyu.edu.hk)
英文摘要	A parametric study is carried out via state-to-state constant-volume heat bath simulations for binary mixtures of O2/O and N2/N to identify nonequilibrium de-excitation conditions where the overall atomic recombination is influenced by thermal nonequilibrium and where it is not. The most important parameter is found to be the translational temperature at which the de-excitation occurs. A low translational temperature of around 500 K is found to prevent the overall atomic recombination process from being influenced by the thermal nonequilibrium, due to the small value of KEQ making the dissociation reaction less important. At a higher translational temperature of 2000 K, the overall atomic recombination process is influenced by the thermal nonequilibrium to an extent that is comparable to that seen in the corresponding excitation conditions, due to the nonequilibriumaccelerated dissociation rate. The current results have important implications in reduced-order modelling and experimental methods.
分类号	Q3
资助项目	Hong Kong Research Grants Council[15206522]
WOS关键词	DISSOCIATION RATES ; VIBRATIONAL-RELAXATION ; RATE CONSTANTS ; MODELS ; AIR ; VALIDATION ; EXCITATION ; OXYGEN
WOS研究方向	Chemistry ; Physics
语种	英语
WOS记录号	WOS:001184572300001
资助机构	Hong Kong Research Grants Council
其他责任者	Gu, Sangdi
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94637]
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.Hong Kong Polytech Univ, Dept Aeronaut & Aviat Engn, Kowloon, Hong Kong, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gu, Sangdi,Hao, Jiaao,Wen, ChihYung,et al. How much does thermal nonequilibrium influence the overall atomic recombination during de-excitation?[J]. CHEMICAL PHYSICS,2024,580:11.
APA	Gu, Sangdi,Hao, Jiaao,Wen, ChihYung,洪启臻,&汪球.(2024).How much does thermal nonequilibrium influence the overall atomic recombination during de-excitation?.CHEMICAL PHYSICS,580,11.
MLA	Gu, Sangdi,et al."How much does thermal nonequilibrium influence the overall atomic recombination during de-excitation?".CHEMICAL PHYSICS 580(2024):11.