Numerical study on reflection of an oblique detonation wave on an outward turning wall

doi:10.1063/5.0001845

	Numerical study on reflection of an oblique detonation wave on an outward turning wall
	Wang KL(王宽亮)1 ; Zhang ZJ(张子健)2,3; Yang PF(杨鹏飞)2,3; Teng HH(滕宏辉)1
通讯作者	Teng, Honghui(hhteng@bit.edu.cn)
发表期刊	PHYSICS OF FLUIDS
	2020-04-01
卷号	32 期号:4 页码:10
ISSN	1070-6631
摘要	Oblique detonation waves (ODWs) have been studied widely as the basis of detonation-based hypersonic engines, but there are few studies on ODWs in a confined space. This study simulates ODW reflection on a solid wall before an outward turning corner for a simplified combustor-nozzle flow based on a two-step kinetic model. Numerical results reveal three types of ODW structures: stable, critical, and unstable. When the reflection occurs at the turning point, the stable ODW structure remains almost the same as before reflection. When the wave reflects at the wall before the turning point, either the critical structure or the unstable structure arises, which has never been investigated before. Both structures have the same initial two-section detonation surface: but the critical one becomes stationary at a certain position, while the unstable one keeps traveling upstream. By adjusting the location of the expansion wave and degree of the turning angle, the difference of the two structures is attributed to the thermal choking appearing only in the unstable structure. The thermal choking is achieved by the merging of subsonic zones, whose dependence on the various parameters is discussed.
DOI	10.1063/5.0001845
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000524279900002
关键词[WOS]	SHOCK-INDUCED COMBUSTION ; INSTABILITY ; PROPULSION ; INITIATION
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National Natural Science Foundation of China (NSFC)[11822202] ; National Natural Science Foundation of China (NSFC)[91641130]
项目资助者	National Natural Science Foundation of China (NSFC)
论文分区	一类/力学重要期刊
力学所作者排名	2
RpAuthor	Teng, Honghui
引用统计	被引频次：37[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/311007/81904
专题	高温气体动力学国家重点实验室
作者单位	1.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, 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,Zhang ZJ,Yang PF,et al. Numerical study on reflection of an oblique detonation wave on an outward turning wall[J]. PHYSICS OF FLUIDS,2020,32,4,:10.
APA	王宽亮,张子健,杨鹏飞,&滕宏辉.(2020).Numerical study on reflection of an oblique detonation wave on an outward turning wall.PHYSICS OF FLUIDS,32(4),10.
MLA	王宽亮,et al."Numerical study on reflection of an oblique detonation wave on an outward turning wall".PHYSICS OF FLUIDS 32.4(2020):10.

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