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

doi:10.1007/s12217-019-09721-x

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	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
通讯作者	Zhang, Yang(yang-zhang@tsinghua.edu.cn)
发表期刊	MICROGRAVITY SCIENCE AND TECHNOLOGY
	2019-12
卷号	31 期号:6 页码:845-854
ISSN	0938-0108
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.
关键词	Cool flame Ignition Extinction Counterflow Double-structured flames
DOI	10.1007/s12217-019-09721-x
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000510837800012
关键词[WOS]	NTC-AFFECTED IGNITION ; DIFFUSION FLAMES ; FLAMMABILITY LIMITS ; DIMETHYL ETHER ; EXTINCTION ; COMBUSTION ; PROPAGATION ; SIMULATION ; MIXTURES ; DYNAMICS
WOS研究方向	Engineering, Aerospace ; Thermodynamics ; Mechanics
WOS类目	Engineering ; Thermodynamics ; Mechanics
资助项目	National Natural Science Foundation of China[NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences[XDA15012800]
项目资助者	National Natural Science Foundation of ChinaNational Natural Science Foundation of China [NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences [XDA15012800]
论文分区	二类
力学所作者排名	5
RpAuthor	Zhang, Y
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81440
专题	微重力重点实验室
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.

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