Numerical Study on the Stabilization of a Self-Sustaining Steady-State Premixed Cool Flame

doi:10.1007/s12217-019-09721-x

	Numerical Study on the Stabilization of a Self-Sustaining Steady-State Premixed Cool Flame
	Zhang Y; Yang XH; Shen WF; Zhang H; Wang SF(王双峰); Lyu JF
刊名	MICROGRAVITY SCIENCE AND TECHNOLOGY
	2019-12
卷号	31 期号:6 页码:845-854
关键词	Cool flame Ignition Extinction Counterflow Double-structured flames
ISSN号	0938-0108
DOI	10.1007/s12217-019-09721-x
通讯作者	Zhang, Yang(yang-zhang@tsinghua.edu.cn)
英文摘要	The unexpected finding of the quasi-steady state cool flame onboard the International Space Station motivated increasing interests to study the dynamic behaviors of cool flames. One key scientific question is how to form and stabilize a self-sustaining steady-state cool flame in a burner with well-defined boundary conditions. This paper numerically studied the stabilization of a self-sustaining steady-state premixed dimethyl ether/O-2/N-2 cool flame. The dual S-curve response in the perfectly-stirred reactor was first analyzed and the results indicated three ways to form a self-sustaining premixed cool flame: 1) igniting the unburned fresh mixture by decreasing the residence time, 2) igniting the unburned mixture by increasing the temperature of the unburned fresh mixture, and 3) extinguishing an extremely lean or an extremely rich hot flame by decreasing the residence time. Using the counterflow configuration, the proposed three ways were successfully demonstrated by tuning the flow temperature and stretch rate. Moreover, double structured flames, i.e., a leading premixed cool flame front followed by a premixed warm flame, were numerically reported in the counterflow flame configuration. The thermal and species structures of the double flames were also discussed.
分类号	二类
资助项目	National Natural Science Foundation of China[NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences[XDA15012800]
WOS关键词	NTC-AFFECTED IGNITION ; DIFFUSION FLAMES ; FLAMMABILITY LIMITS ; DIMETHYL ETHER ; EXTINCTION ; COMBUSTION ; PROPAGATION ; SIMULATION ; MIXTURES ; DYNAMICS
WOS研究方向	Engineering, Aerospace ; Thermodynamics ; Mechanics
语种	英语
WOS记录号	WOS:000510837800012
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China [NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences [XDA15012800]
其他责任者	Zhang, Y
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/81440]
专题	力学研究所_国家微重力实验室
推荐引用方式 GB/T 7714	Zhang Y,Yang XH,Shen WF,et al. Numerical Study on the Stabilization of a Self-Sustaining Steady-State Premixed Cool Flame[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2019,31(6):845-854.
APA	Zhang Y,Yang XH,Shen WF,Zhang H,王双峰,&Lyu JF.(2019).Numerical Study on the Stabilization of a Self-Sustaining Steady-State Premixed Cool Flame.MICROGRAVITY SCIENCE AND TECHNOLOGY,31(6),845-854.
MLA	Zhang Y,et al."Numerical Study on the Stabilization of a Self-Sustaining Steady-State Premixed Cool Flame".MICROGRAVITY SCIENCE AND TECHNOLOGY 31.6(2019):845-854.