Combustion characteristics of non-premixed methane micro-jet flame in coflow air and thermal interaction between flame and micro tube

doi:10.1016/j.applthermaleng.2016.10.082

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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, Xing 1; Zhang, Jing ; Yang, Haolin; Jiang, Liqiao; Wang, Xiaohan; Zhao, Daiqing1
刊名	APPLIED THERMAL ENGINEERING
	2017-02-05
卷号	112 页码:296-303
关键词	Non-premixed Methane Micro-jet Flame Coflow Air Combustion Characteristics Thermal Interaction
DOI	10.1016/j.applthermaleng.2016.10.082
文献子类	Article
英文摘要	The 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.
WOS关键词	DIFFUSION FLAMES ; TEMPERATURE-GRADIENT ; RADIAL MICROCHANNEL ; H-2/AIR MIXTURE ; SPLITTING LIMIT ; NARROW CHANNEL ; HEATED CHANNEL ; WALL CAVITIES ; STABILIZATION ; EXTINCTION
语种	英语
WOS记录号	WOS:000394831500030
资助机构	National Natural Science Foundation of China(51336010) ; National Basic Research Program of China(2014CB239601) ; Science and Technology Project of Guangdong Province(2016A040403095)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/14053]
专题	中国科学院广州能源研究所
作者单位	1.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
推荐引用方式 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.