Steadiness of wave complex induced by oblique detonation wave reflection before an expansion corner

doi:10.1016/j.ast.2021.106592

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

	Steadiness of wave complex induced by oblique detonation wave reflection before an expansion corner
	Wang KL(王宽亮)2; Yang PF(杨鹏飞)1,3; Teng HH(滕宏辉)2
刊名	AEROSPACE SCIENCE AND TECHNOLOGY
	2021-05-01
卷号	112 页码:9
关键词	Oblique detonation Wave complex Instability Thermal choking Expansion corner
ISSN号	1270-9638
DOI	10.1016/j.ast.2021.106592
通讯作者	Teng, Honghui(hhteng@bit.edu.cn)
英文摘要	Oblique detonation wave (ODW) reflection before an expansion corner leads to a sophisticated wave complex, whose steadiness is critical to achieve a practical oblique detonation engine. Both steady and unsteady wave complexes have been observed before, but the features of unsteady wave dynamics with related unsteadiness rules are still unclear so far. In this study, the ODW reflections before an expansion corner have been simulated using the reactive Euler equations with a two-step induction-reaction kinetic model, and the wave complex structures and dynamics have been analyzed correspondingly. Three subsonic zones have been distinguished, and their interactions were found to determine the wave complex steadiness. The main subsonic zone derives from the ODW reflection, which locates behind the Mach stem, while two other subsonic zones form due to the shock reflection downstream. The two downstream subsonic zones might travel upstream and combine with the main subsonic zone, resulting in two different unsteadiness modes. These wave complex dynamics were analyzed with respect to the deflection location, deflection angle and inflow Mach number, leading to the boundaries of combustion modes and ascertaining the rule of mode regime. Some transient phenomena related with the flow instability have been also discussed, clarifying fine flow structures further. (C) 2021 Elsevier Masson SAS. All rights reserved.
分类号	一类
资助项目	National Natural Science Foundation of China(NSFC)[11822202] ; National Natural Science Foundation of China(NSFC)[12002041]
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000638252400007
资助机构	National Natural Science Foundation of China(NSFC)
其他责任者	Teng, Honghui
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86473]
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.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang KL,Yang PF,Teng HH. Steadiness of wave complex induced by oblique detonation wave reflection before an expansion corner[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2021,112:9.
APA	王宽亮,杨鹏飞,&滕宏辉.(2021).Steadiness of wave complex induced by oblique detonation wave reflection before an expansion corner.AEROSPACE SCIENCE AND TECHNOLOGY,112,9.
MLA	王宽亮,et al."Steadiness of wave complex induced by oblique detonation wave reflection before an expansion corner".AEROSPACE SCIENCE AND TECHNOLOGY 112(2021):9.