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Combustion characteristics of non-premixed methane micro-jet flame in coflow air and thermal interaction between flame and micro tube
Li, Xing1; Zhang, Jing; Yang, Haolin; Jiang, Liqiao; Wang, Xiaohan; Zhao, Daiqing1
2017-02-05
Source PublicationAPPLIED THERMAL ENGINEERING
Volume112Pages:296-303
AbstractThe combustion characteristics of non-premixed methane micro-jet flame in coflow air were investigated experimentally and numerically. A detailed reaction mechanism was employed in the two-dimension numerical computation. The thermal interaction between the flame and solid tube was considered by using fluid-solid coupled thermal boundaries in the numerical computation. Four typical flames, lifted flame, attached flame, hemisphere flame and umbrella flame, were observed in different fuel flow velocity ranges in experiments. The flame heights, blow off and extinction limits in coflow airs at different velocities were measured. The OH and CH distributions of non-premixed micro-jet flames were obtained by experiments, and the computational results agree well with those from the experiments. The computational temperature distributions show that there are thermal interactions between flames and solid tube. The heat exchanges through surfaces of the solid tube were analyzed in detail. The fresh fuel gas in the solid tube is preheated by the thermal recirculation. Consequently, the combustion intensity of the micro-jet flame is enhanced. The thermal interaction is essentially affected by the flame shape, and it is significant for the hemisphere flame. (C) 2016 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordNon-premixed Methane Micro-jet Flame Coflow Air Combustion Characteristics Thermal Interaction
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.applthermaleng.2016.10.082
WOS Subject ExtendedThermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS KeywordDIFFUSION FLAMES ; TEMPERATURE-GRADIENT ; RADIAL MICROCHANNEL ; H-2/AIR MIXTURE ; SPLITTING LIMIT ; NARROW CHANNEL ; HEATED CHANNEL ; WALL CAVITIES ; STABILIZATION ; EXTINCTION
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(51336010) ; National Basic Research Program of China(2014CB239601) ; Science and Technology Project of Guangdong Province(2016A040403095)
WOS SubjectThermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS IDWOS:000394831500030
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/14053
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Xing,Zhang, Jing,Yang, Haolin,et al. Combustion characteristics of non-premixed methane micro-jet flame in coflow air and thermal interaction between flame and micro tube[J]. APPLIED THERMAL ENGINEERING,2017,112:296-303.
APA Li, Xing,Zhang, Jing,Yang, Haolin,Jiang, Liqiao,Wang, Xiaohan,&Zhao, Daiqing.(2017).Combustion characteristics of non-premixed methane micro-jet flame in coflow air and thermal interaction between flame and micro tube.APPLIED THERMAL ENGINEERING,112,296-303.
MLA Li, Xing,et al."Combustion characteristics of non-premixed methane micro-jet flame in coflow air and thermal interaction between flame and micro tube".APPLIED THERMAL ENGINEERING 112(2017):296-303.
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