Effect of interaction strength on recovery downstream of incident shock interactions

doi:10.1063/5.0130596

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

	Effect of interaction strength on recovery downstream of incident shock interactions
	Tong, Fulin 3; Lai, Jiang 3; Duan, Junyi 1,2; Dong, Siwei 3; Yuan, Xianxu 3; Li, Xinliang 1,2
刊名	PHYSICS OF FLUIDS
	2022-12-01
卷号	34 期号:12 页码:27
ISSN号	1070-6631
DOI	10.1063/5.0130596
通讯作者	Yuan, Xianxu(yuanxianxu@cardc.cn)
英文摘要	Direct numerical simulations of a supersonic turbulent boundary layer on a flat plate interacting with an impinging shock wave are carried out with two different incident shock angles at Mach 2.25. The effect of the interaction strength on the recovery process in the downstream region is systematically studied, including the turbulence evolution, the statistical and structural properties of wall pressure fluctuations, and the generation of mean skin friction and wall heat flux. The variations of the Reynolds stress components, the anisotropy tensor, and the turbulent kinetic energy budget in the two flow cases highlight a slow reversal tendency and an increasingly pronounced importance of the outer-layer large-scale structures in the relaxation region of the strong interaction. We find that the effect of increasing the interaction strength on the fluctuating wall pressure is reflected by a decrease in the characteristic frequencies, an increase in the spatial extent, and a decrease in the convection velocity. We decompose the mean skin friction and wall heat flux into different physically informed contributions and reveal that the mean wall heat flux generation is the same regardless of the interaction strength; in contrast, the generation mechanism of mean skin friction is found to be fundamentally changed. A novel scale-decomposition method is used to quantify the effect of the increased interaction strength on the leading components, and it is demonstrated that the energetic outer-layer large-scale structures are the dominant contributor in the recovery process as the interaction strength is increased. Published under an exclusive license by AIP Publishing.
资助项目	National Key R&D Program of China ; National Natural Science Foundation of China ; [2019YFA0405300] ; [11972356] ; [91852203]
WOS关键词	DIRECT NUMERICAL-SIMULATION ; TURBULENT-BOUNDARY-LAYER ; LARGE-EDDY SIMULATION ; FLUCTUATIONS ; WAVE ; UNSTEADINESS
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000898247700013
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/91365]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Yuan, Xianxu
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China 3.State Key Lab Aerodynam, Mianyang 621000, Peoples R China
推荐引用方式 GB/T 7714	Tong, Fulin,Lai, Jiang,Duan, Junyi,et al. Effect of interaction strength on recovery downstream of incident shock interactions[J]. PHYSICS OF FLUIDS,2022,34(12):27.
APA	Tong, Fulin,Lai, Jiang,Duan, Junyi,Dong, Siwei,Yuan, Xianxu,&Li, Xinliang.(2022).Effect of interaction strength on recovery downstream of incident shock interactions.PHYSICS OF FLUIDS,34(12),27.
MLA	Tong, Fulin,et al."Effect of interaction strength on recovery downstream of incident shock interactions".PHYSICS OF FLUIDS 34.12(2022):27.