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

文献类型：期刊论文

作者Zhang Y; Yang XH; Shen WF; Zhang H; Wang SF(王双峰); Lyu JF
刊名MICROGRAVITY SCIENCE AND TECHNOLOGY
出版日期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
DOI10.1007/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
WOS关键词NTC-AFFECTED IGNITION ; DIFFUSION FLAMES ; FLAMMABILITY LIMITS ; DIMETHYL ETHER ; EXTINCTION ; COMBUSTION ; PROPAGATION ; SIMULATION ; MIXTURES ; DYNAMICS
资助项目National Natural Science Foundation of China[NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences[XDA15012800]
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
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.

入库方式： OAI收割

来源：力学研究所

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