Effects of Cowl-Induced Expansion on the Wave Complex Induced by Oblique Detonation Wave Reflection

doi:10.3390/pr9071215

	Effects of Cowl-Induced Expansion on the Wave Complex Induced by Oblique Detonation Wave Reflection
	Wang, Aifeng1 ; Shang JH(尚佳豪)2; Wang Q(汪球)2 ; Wang KL(王宽亮)3
通讯作者	Wang, Kuanliang(wangkuanliang@bit.edu.cn)
发表期刊	PROCESSES
	2021-07-01
卷号	9 期号:7 页码:10
摘要	Oblique detonation wave (ODW) reflection on the upper wall leads to a sophisticated wave complex, whose stability is critical to the application of oblique detonation engines. The unstable wave complex characterized with a continuous moving Mach stem has been observed, but the corresponding re-stability adjusting method is still unclear so far. In this study, the cowl-induced expansion wave based on the model with an upper-side expansion wall is introduced, and the ODW dynamics have been analyzed using the reactive Euler equations with a two-step induction-reaction kinetic model. With the addition of a cowl-induced expansion wave, the re-stabilized Mach stem has been distinguished. This re-stability is determined by the weakened secondary reflection wave of lower wall, while the final location of Mach stem is not sensitive to the position of the expansion corner. The re-stabilized ODW structure is also basically irrelevant to the expansion angle, while it may shift to unstable due to the merging of subsonic zones. Transient phenomena for the unstable state have been also discussed, clarifying fine wave structures further.
关键词	oblique detonation asymmetric nozzle reflection
DOI	10.3390/pr9071215
收录类别	SCI
语种	英语
WOS记录号	WOS:000676917000001
关键词[WOS]	COMBUSTION ; PERFORMANCE ; INITIATION
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
资助项目	National Natural Science Foundation of China (NSFC)[12002041]
项目资助者	National Natural Science Foundation of China (NSFC)
论文分区	Q3
力学所作者排名	2
RpAuthor	Wang, Kuanliang
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87059
专题	高温气体动力学国家重点实验室
作者单位	1.Aero Engine Acad China, Aero Engine Corp China, Beijing 101304, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Aifeng,Shang JH,Wang Q,et al. Effects of Cowl-Induced Expansion on the Wave Complex Induced by Oblique Detonation Wave Reflection[J]. PROCESSES,2021,9,7,:10.
APA	Wang, Aifeng,尚佳豪,汪球,&王宽亮.(2021).Effects of Cowl-Induced Expansion on the Wave Complex Induced by Oblique Detonation Wave Reflection.PROCESSES,9(7),10.
MLA	Wang, Aifeng,et al."Effects of Cowl-Induced Expansion on the Wave Complex Induced by Oblique Detonation Wave Reflection".PROCESSES 9.7(2021):10.

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