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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
Corresponding AuthorZhang, Yang(yang-zhang@tsinghua.edu.cn)
Source PublicationMICROGRAVITY SCIENCE AND TECHNOLOGY
2019-12
Volume31Issue:6Pages:845-854
ISSN0938-0108
AbstractThe 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.
KeywordCool flame Ignition Extinction Counterflow Double-structured flames
DOI10.1007/s12217-019-09721-x
Indexed BySCI ; EI
Language英语
WOS IDWOS:000510837800012
WOS KeywordNTC-AFFECTED IGNITION ; DIFFUSION FLAMES ; FLAMMABILITY LIMITS ; DIMETHYL ETHER ; EXTINCTION ; COMBUSTION ; PROPAGATION ; SIMULATION ; MIXTURES ; DYNAMICS
WOS Research AreaEngineering, Aerospace ; Thermodynamics ; Mechanics
WOS SubjectEngineering ; Thermodynamics ; Mechanics
Funding ProjectNational Natural Science Foundation of China[NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences[XDA15012800]
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China [NSFC 51706119] ; Strategic Pilot Project of the Chinese Academy of Sciences [XDA15012800]
Classification二类
Ranking5
ContributorZhang, Y
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81440
Collection国家微重力实验室
Recommended Citation
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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