Flame Propagation and Combustion State Transition in a Sub-millimeter Constant-volume Space

doi:10.1080/00102202.2020.1716340

	Flame Propagation and Combustion State Transition in a Sub-millimeter Constant-volume Space
	Su, Hang 1,2,3,4; Huo, Jiepeng 1,2,3,4; Wang, Xiaohan 1,2,3; Jiang, Liqiao 1,2,3; Song, Qianshi 1,2,3,4; Zhao, Daiqing 1,2,3
刊名	COMBUSTION SCIENCE AND TECHNOLOGY
	2020-01-18
页码	19
关键词	Micro-combustion constant-volume chamber flame propagation instability deflagration
ISSN号	0010-2202
DOI	10.1080/00102202.2020.1716340
通讯作者	Wang, Xiaohan(wangxh@ms.giec.ac.cn)
英文摘要	Experimental studies on premixed flame propagation characteristics in a sub-millimeter-scale closed chamber are performed. Propane/air mixtures are ignited in the center of the visualized chamber and the subsequent flame front evolution process is recorded. The effects of the gap size of the chamber and the initial pressure of the mixture on the flame behaviors are investigated. In the condition of the gap size H = 0.45 mm, the flammable range of propane/air mixtures ranges from 2.0 bar to 3.0 bar of initial pressure P-0, and from 0.9 to 1.5 of the equivalence ratio phi. At H = 0.45 mm, the flammability limit of the mixture is lower than that of large scale, and the instability of flame propagation is higher. With suitable initial conditions, such as P-0 >= 2.5 bar, phi = 1.2 similar to 1.3, and H = 0.45 mm, the transition from a low-speed laminar flame to a high-speed deflagration flame is observed. When the size of the combustion chamber height is as small as the laminar flame surface thickness, acoustic waves in the combustion chamber dominate flame propagation. The interaction between the acoustic wave and the flame front greatly increases the flame surface area, resulting in great enhancement of reaction and subsequent flame deflagration. Furthermore, the increase in initial pressure will dramatically increase the propagation speed and the pressure peak, which are also affected notably by the equivalence ratio and the spatial scale of the chamber.
资助项目	Foundation of CAS Key Laboratory of Renewable Energy[y907j91001] ; Transformational Technologies for Clean Energy and Demonstration ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21060102] ; National Natural Science Foundation of China[51976219] ; Foundation of State Key Laboratory of Coal Combustion[FSKLCCA1804]
WOS关键词	LAMINAR BURNING VELOCITIES ; PREMIXED HYDROGEN/AIR FLAME ; STOICHIOMETRIC ETHYLENE/OXYGEN ; MARKSTEIN NUMBERS ; DETONATION-WAVE ; TULIP FLAME ; AIR ; ACCELERATION ; MICRO ; DDT
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000507819900001
资助机构	Foundation of CAS Key Laboratory of Renewable Energy ; Transformational Technologies for Clean Energy and Demonstration ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Foundation of State Key Laboratory of Coal Combustion
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26331]
专题	中国科学院广州能源研究所
通讯作者	Wang, Xiaohan
作者单位	1.Chinese Acad Sci, CAS Key Lab Renewable Energy, Guangzhou, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Su, Hang,Huo, Jiepeng,Wang, Xiaohan,et al. Flame Propagation and Combustion State Transition in a Sub-millimeter Constant-volume Space[J]. COMBUSTION SCIENCE AND TECHNOLOGY,2020:19.
APA	Su, Hang,Huo, Jiepeng,Wang, Xiaohan,Jiang, Liqiao,Song, Qianshi,&Zhao, Daiqing.(2020).Flame Propagation and Combustion State Transition in a Sub-millimeter Constant-volume Space.COMBUSTION SCIENCE AND TECHNOLOGY,19.
MLA	Su, Hang,et al."Flame Propagation and Combustion State Transition in a Sub-millimeter Constant-volume Space".COMBUSTION SCIENCE AND TECHNOLOGY (2020):19.