Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition

doi:10.3390/en14082226

GIEC OpenIR

	Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition
	Pan, Jiaying 1; He, Yu 1; Li, Tao2 ; Wei, Haiqiao 1; Wang, Lei 1; Shu, Gequn 1
	2021-04-01
发表期刊	ENERGIES
卷号	14 期号:8 页码:17
通讯作者	Pan, Jiaying(jypan@tju.edu.cn)
摘要	Turbulent jet ignition technology can significantly improve lean combustion stability and suppress engine knocking. However, the narrow jet channel between the pre-chamber and the main chamber leads to some difficulties in heat exchange, which significantly affects combustion performance and mechanical component lifetime. To clarify the effect of temperature conditions on combustion evolutions of turbulent jet ignition, direct numerical simulations with detailed chemical kinetics were employed under engine-relevant conditions. The flame propagation in the pre-chamber and the early-stage turbulent jet ignition in the main chamber were investigated. The results show that depending on temperature conditions, two types of flame configuration can be identified in the main chamber, i.e., the normal turbulent jet flame propagation and the spherical flame propagation, and the latter is closely associated with pressure wave disturbance. Under low-temperature conditions, the cold jet stoichiometric mixtures and the vortexes induced by the jet flow determine the early-stage flame development in the main chamber. Under intermediate temperature conditions, pre-flame heat release and leading pressure waves are induced in the jet channel, which can be regarded as a transition of different combustion modes. Whereas under high-temperature conditions, irregular auto-ignition events start to occur, and spherical flame fronts are induced in the main chamber, behaving faster flame propagation.
关键词	turbulent jet ignition ignition characteristics temperature conditions combustion modes pressure wave
DOI	10.3390/en14082226
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFE0102800] ; National Natural Science Foundation of China[52076149] ; National Natural Science Foundation of China[51825603]
WOS研究方向	Energy & Fuels
项目资助者	National Key R&D Program of China ; National Natural Science Foundation of China
WOS类目	Energy & Fuels
WOS记录号	WOS:000644127000001
出版者	MDPI
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/32998
专题	中国科学院广州能源研究所
通讯作者	Pan, Jiaying
作者单位	1.Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Pan, Jiaying,He, Yu,Li, Tao,et al. Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition[J]. ENERGIES,2021,14(8):17.
APA	Pan, Jiaying,He, Yu,Li, Tao,Wei, Haiqiao,Wang, Lei,&Shu, Gequn.(2021).Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition.ENERGIES,14(8),17.
MLA	Pan, Jiaying,et al."Effect of Temperature Conditions on Flame Evolutions of Turbulent Jet Ignition".ENERGIES 14.8(2021):17.