A microscopic study of one-dimensional H2-O2 detonation using DSMC method

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	A microscopic study of one-dimensional H2-O2 detonation using DSMC method
	Yang C(杨超); Huang HJ(黄河激); Sun QH(孙泉华)
	2019
会议日期	23 July 2018 ~ 27 July 2018
会议地点	University of StrathclydeGlasgow; United Kingdom;
英文摘要	The global and local behaviors of detonation waves are affected by the thermo-chemical coupling process which requires the understanding at molecular level due to its microscopic complexity. In present study, one-dimensional H2-O2 detonation is numerically investigated through DSMC method. The detailed balance between forward and reverse reactions is achieved through a modified reaction model, which improves the simulation accuracy of combustion system. Results show that the overall structure of detonation is in accordance with the CFD result, but the microscopic fluctuation of auto-ignition affects detonation in both initiation and propagation stages. Analysis of the detailed structure in the induction zone shows that the auto-ignition process is strongly coupled with the vibrational relaxation process. The lower vibrational temperature decreases the chemical reaction rates, resulting in an increase of ignition delay time and induction zone length. © 2019 Author(s).
会议录	AIP Conference Proceedings
语种	英语
URL标识	查看原文
ISBN号	9780735418745
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85088]
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.Laboratory for Aerospace Science and Technology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China 2.State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, CAS, Beijing, 100190, China
推荐引用方式 GB/T 7714	Yang C,Huang HJ,Sun QH. A microscopic study of one-dimensional H2-O2 detonation using DSMC method[C]. 见:. University of StrathclydeGlasgow; United Kingdom;. 23 July 2018 ~ 27 July 2018.