Experimental study of hysteresis and catastrophe in a cavity-based scramjet combustor

doi:10.1016/j.cja.2021.08.008

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

	Experimental study of hysteresis and catastrophe in a cavity-based scramjet combustor
	Zhang X(张旭); Zhang QF(张启帆); Wu ZJ(吴振杰); Yue LJ(岳连捷); Gao ZB(高占彪); Luo WH(罗苇航); Chen H(陈昊)
刊名	CHINESE JOURNAL OF AERONAUTICS ; 10
	2022-10
卷号	35 页码:118-133
关键词	Catastrophe Cavity-based scramjet Flame stabilization Flame/shock interaction Hysteresis
ISSN号	1000-9361
DOI	10.1016/j.cja.2021.08.008
英文摘要	Hystereses and catastrophes were experimentally investigated in a cavity-based scramjet combustor. The inflow Mach number was 3.0. Fuel Equivalence Ratio (ER) was continuously regulated with multi-steps to explore influences of historical regulation directions on combustion states. Two divided hysteresis loops with catastrophes were observed. By 1-D flow estimations, the first loop occurred with shock-free/separated scramjet mode transitions, while the second kept in the separated scramjet mode. This breaks through the traditional knowledge that hysteresis and catastrophe were certainly related to ramjet/scramjet mode transitions. The first hysteresis and catastrophes were attributed to flame stabilization mode transitions between the cavity shearlayer stabilized and the jet-wake stabilized, with flow separation establishment/vanishment upstream the cavities. The obvious variations of flame and shock/separation structures meant large wall-pressure changes in the expansive duct, and generated obvious thrust catastrophes. Besides, transition ER and catastrophe were larger in historical ER-increasing path because combustion efficiency became obviously larger as flow separation established. Difference of critical transition ERs meant the first hysteresis. The second hysteresis and catastrophes in the jet-wake stabilized mode were attributed to flame/shock interaction mode transitions between the flame/shock weak interaction mode and intensive interaction mode. Each transition caused slightly stronger/weaker flame interacting with slightly larger/smaller flow separation, which meant small wall-pressure changes in the expansive duct, and thus thrust catastrophe was unobvious. Hysteresis occurred as the critical transition ER was slightly higher in historical ER-increasing path because of slightly lower combustion efficiency under slightly smaller separation. (C) 2021 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd.
分类号	一类
WOS研究方向	Engineering, Aerospace
语种	英语
WOS记录号	WOS:000931146300009
资助机构	National Natural Science Foundation of China [11902325, 11672309]
其他责任者	Zhang, QF (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92415]
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.{Chen Hao} Chinese Acad Sci Innovat Acad Light Duty Gas Turbine Beijing 100190 Peoples R China 2.{Zhang Xu, Wu Zhenjie, Yue Lianjie} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 3.{Zhang Xu, Zhang Qifan, Wu Zhenjie, Yue Lianjie, Gao Zhanbiao, Luo Weihang, Chen Hao} Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Zhang X,Zhang QF,Wu ZJ,et al. Experimental study of hysteresis and catastrophe in a cavity-based scramjet combustor[J]. CHINESE JOURNAL OF AERONAUTICS, 10,2022,35:118-133.
APA	张旭.,张启帆.,吴振杰.,岳连捷.,高占彪.,...&陈昊.(2022).Experimental study of hysteresis and catastrophe in a cavity-based scramjet combustor.CHINESE JOURNAL OF AERONAUTICS,35,118-133.
MLA	张旭,et al."Experimental study of hysteresis and catastrophe in a cavity-based scramjet combustor".CHINESE JOURNAL OF AERONAUTICS 35(2022):118-133.