Unsteady dynamics of wedge-induced oblique detonations under periodic inflows

doi:10.1063/5.0035829

	Unsteady dynamics of wedge-induced oblique detonations under periodic inflows
	Yang PF(杨鹏飞)1,2,3; Ng, Hoi Dick 4; Teng, Honghui1
通讯作者	Teng, Honghui(hhteng@bit.edu.cn)
发表期刊	PHYSICS OF FLUIDS
	2021
卷号	33 期号:1 页码:15
ISSN	1070-6631
摘要	Two-dimensional, wedge-induced oblique detonation waves (ODWs) subject to periodic inflow are simulated using the reactive Euler equations with a two-step induction-reaction kinetic model. The focus of this work is how the periodic unsteadiness of a sinusoidal density disturbance with varying frequency and amplitude influences an initially established ODW structure. Three fundamental ODW structures with different transition types and inflow Mach numbers are disturbed, resulting in two types of triple-point formations: the main triple point (MTP) and the train of triple points (TTP). The TTP features multi-triple points arising almost simultaneously and traveling together, which has never been observed before. A parametric study and frequency analysis reveal that the MTP derives from forced destabilization, while the TTP derives from the combined effect of surface instability and inflow disturbance. Furthermore, a new phenomenon of MTP degeneration is observed for a proper inflow Mach number and disturbance amplitude. Finally, the oscillation amplitudes of unsteady ODWs are analyzed with respect to the Mach number and inflow disturbance, demonstrating the effects of transition type on surface unsteadiness.
DOI	10.1063/5.0035829
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000630420200003
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] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 111 Project of China[B16003]
项目资助者	National Natural Science Foundation of China (NSFC) ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 111 Project of China
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Teng, Honghui
引用统计	被引频次：19[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/311007/86172
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; 4.Concordia Univ, Dept Mech Ind & Aerosp Engn, Montreal, PQ H3G 1M8, Canada
推荐引用方式 GB/T 7714	Yang PF,Ng, Hoi Dick,Teng, Honghui. Unsteady dynamics of wedge-induced oblique detonations under periodic inflows[J]. PHYSICS OF FLUIDS,2021,33,1,:15.
APA	杨鹏飞,Ng, Hoi Dick,&Teng, Honghui.(2021).Unsteady dynamics of wedge-induced oblique detonations under periodic inflows.PHYSICS OF FLUIDS,33(1),15.
MLA	杨鹏飞,et al."Unsteady dynamics of wedge-induced oblique detonations under periodic inflows".PHYSICS OF FLUIDS 33.1(2021):15.

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