Coupling Effect of Multicavity on Flame Stabilization Mode Transitions in Scramjet Combustor

doi:10.2514/1.B38787

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

	Coupling Effect of Multicavity on Flame Stabilization Mode Transitions in Scramjet Combustor
	Wu ZJ(吴振杰); Zhang QF(张启帆); Yu FY(于方游); Luo WH(罗苇航); Gao ZB(高占彪); Yue LJ(岳连捷)
刊名	JOURNAL OF PROPULSION AND POWER
	2023-03
关键词	Scramjet Engines Combustor Design flame stabilization mode transition path dependence
ISSN号	0748-4658
DOI	10.2514/1.B38787
英文摘要	To investigate the effect of the multicavity on flame stabilization mode transition in a scramjet combustor, experiments involving various fuel injection strategies were conducted in a direct-connect supersonic combustor with a multicavity at the entrance with a Mach number of 3.0. The flame stabilization mode of the first cavity transitioned under all working conditions, but the equivalence ratio and wall static pressure changes were different. According to the different driving modes, the transition types were identified to be direct-driven local heat release and indirect-driven downstream backpressure. Direct changes in the local equivalence ratio could lead to significant combustion variations. The difference in combustion intensity between the two flame stabilization modes resulted in obvious path dependence, and the different transition paths of the flame stabilization mode could yield a difference in the equivalence ratio of ?f=0.10 at the moment of flame stabilization mode transition. If the equivalence ratio of the first cavity was set to a low value, the backpressure generated by downstream combustion was indirectly employed to promote the flame stabilization mode transition of the first cavity, which could reduce the degree of abrupt change. In addition, different transition paths could generate a difference in the equivalence ratio of ?f=0.03 at the moment of flame stabilization mode transition.
分类号	二类
WOS研究方向	WOS:000961622800001
语种	英语
资助机构	National Natural Science Foundation of China [~11902325, U2141220]
其他责任者	Zhang, QF
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92240]
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.(Wu Zhenjie, Yu Fangyou, Yue Lianjie) Univ Chinese Acad Sci Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.(Luo Weihang) Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China 3.(Wu Zhenjie, Zhang Qifan, Yu Fangyou, Gao Zhanbiao, Yue Lianjie) Chinese Acad Sci State Key Lab High Temp Gas Dynam Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Wu ZJ,Zhang QF,Yu FY,et al. Coupling Effect of Multicavity on Flame Stabilization Mode Transitions in Scramjet Combustor[J]. JOURNAL OF PROPULSION AND POWER,2023.
APA	吴振杰,张启帆,于方游,罗苇航,高占彪,&岳连捷.(2023).Coupling Effect of Multicavity on Flame Stabilization Mode Transitions in Scramjet Combustor.JOURNAL OF PROPULSION AND POWER.
MLA	吴振杰,et al."Coupling Effect of Multicavity on Flame Stabilization Mode Transitions in Scramjet Combustor".JOURNAL OF PROPULSION AND POWER (2023).