Flow Field and Combustion Characteristics in Localized Stratified Swirling Tubular Flame Burner: Numerical Investigation

doi:10.1080/00102202.2019.1602614

	Flow Field and Combustion Characteristics in Localized Stratified Swirling Tubular Flame Burner: Numerical Investigation
	Ren, Shoujun 1,2,3; Yang, Haolin 2,3; Jiang, Liqiao 2,3; Zhao, Daiqing 1,2,3; Wang, Xiaohan 2,3
刊名	COMBUSTION SCIENCE AND TECHNOLOGY
	2019-04-13
页码	18
关键词	Tubular flame localized stratification combustion characteristics flow field structure stability limit
ISSN号	0010-2202
DOI	10.1080/00102202.2019.1602614
通讯作者	Yang, Haolin(yanghl@ms.giec.ac.cn) ; Zhao, Daiqing(zhaodq@ms.giec.ac.cn)
英文摘要	A three-dimensional numerical simulation of a localized stratified tubular flame burner is carried out by using propane as fuel. The characteristics of the flow field, species distribution, flame structure, and stability limit are investigated. Results show that in the cold flow field, a specific distribution of species is formed due to the unique inlet structure and the effects of vortex breakdown, in which propane is mainly distributed near the wall, while oxygen is uniformly distributed in the burner. At the burning state, propane and oxygen are mixed at the inlet section of the burner and produce a stratified mixture from fuel lean to fuel rich, thus forming a flame that is similar to a triple flame, which plays an important role in promoting the combustion stability. Based on the localized stratification property and the effect of precessing vortex core, the main reaction takes place in the fuel-rich region (Lewis number <1 for C3H8 as fuel). Hence, the tubular flame easily forms and is hardly extinguished. In addition, the flow field promotes the chemical enthalpy supply to the reaction zone, thereby enhancing combustion. Essentially, this type of burner does not require a uniform premixed gas to establish the tubular flame which differs from the typical tubular flame burner. The stability limit of the localized stratified tubular flame is greatly improved compared with that of the rapidly mixed tubular flame, especially under lean conditions.
资助项目	National Key Research and Development Program of China[2016YFE0127500]
WOS关键词	METHANE/OXYGEN COMBUSTION ; LAMINARIZATION ; PROPAGATION
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000466684200001
资助机构	National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24858]
专题	中国科学院广州能源研究所
通讯作者	Yang, Haolin; Zhao, Daiqing
作者单位	1.Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou, Guangdong, Peoples R China 3.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Ren, Shoujun,Yang, Haolin,Jiang, Liqiao,et al. Flow Field and Combustion Characteristics in Localized Stratified Swirling Tubular Flame Burner: Numerical Investigation[J]. COMBUSTION SCIENCE AND TECHNOLOGY,2019:18.
APA	Ren, Shoujun,Yang, Haolin,Jiang, Liqiao,Zhao, Daiqing,&Wang, Xiaohan.(2019).Flow Field and Combustion Characteristics in Localized Stratified Swirling Tubular Flame Burner: Numerical Investigation.COMBUSTION SCIENCE AND TECHNOLOGY,18.
MLA	Ren, Shoujun,et al."Flow Field and Combustion Characteristics in Localized Stratified Swirling Tubular Flame Burner: Numerical Investigation".COMBUSTION SCIENCE AND TECHNOLOGY (2019):18.