Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure

doi:10.1016/j.fuel.2019.01.113

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure
	Ge YF(葛逸飞); Li S(李森); Wei XL(魏小林)
刊名	FUEL
	2019-05-01
卷号	243 页码:221-229
关键词	Diffusion flame Co-flow Laminar Pulsation High pressure
ISSN号	0016-2361
DOI	10.1016/j.fuel.2019.01.113
英文摘要	Compared to turbulent combustion in practical combustion devices, a co-flow laminar diffusion flame is the simplest configuration from which the interactions between flow field and reactions can be readily studied. High pressure combustion experiments on the methane/oxygen laminar co-flow diffusion flame are conducted to distinguish combustion states from 0.2 to 4 MPa. The transition combustion state between the steady state and periodical pulsation combustion state is studied quantitatively. The results obtained using a Schlieren device show that the different formation heights of the vortices generated in the jet flame shear layer lead to different combustion states. Based on the combustion pressure and Froude number at the burner exit, the upper and lower limits for the transition combustion state are proposed as Fr-cr=9.8x10(-4)(p(r)-0.012)(-1.87) +/- 4.0x10(-5)(p(r)+ 0.026)(-2.48 The flame is in the steady combustion state when the flame Fr is smaller than the lower limit of Fr-cr. When the flame Fr is larger than the upper limit of Fr-cr, pulsation combustion takes place. For the pulsation combustion state, the relationship between the Strouhal number and Froude number is established as St=0.29xFr(-0.65).
分类号	一类
WOS关键词	COFLOW ; TRANSITION ; FREQUENCY ; MECHANISM ; BUOYANCY
WOS研究方向	Energy & Fuels ; Engineering, Chemical
语种	英语
WOS记录号	WOS:000459431800024
资助机构	National Natural Science Foundation of China [91641115] ; Strategic Priority Research Program of Chinese Academy of Sciences [XDA17030100]
其他责任者	Li, S
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78461]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.{Ge, Yifei、Li, Sen、Wei, Xiaolin} Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.{Ge, Yifei} Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ge YF,Li S,Wei XL. Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure[J]. FUEL,2019,243:221-229.
APA	葛逸飞,李森,&魏小林.(2019).Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure.FUEL,243,221-229.
MLA	葛逸飞,et al."Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure".FUEL 243(2019):221-229.