Direct numerical simulation of shock-wave/boundary layer interaction controlled with convergent-divergent riblets

doi:10.1063/5.0102261

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

	Direct numerical simulation of shock-wave/boundary layer interaction controlled with convergent-divergent riblets
	Guo TB(郭同彪)3; Fang, Jian 2; Zhang J(张继)1,3; Li XL(李新亮)1,3
刊名	PHYSICS OF FLUIDS
	2022-08-01
卷号	34 期号:8 页码:18
ISSN号	1070-6631
DOI	10.1063/5.0102261
通讯作者	Li, Xinliang(lixl@imech.ac.cn)
英文摘要	In this paper, a section of convergent-divergent (C-D) riblets is applied upstream of a compression ramp in a supersonic turbulent boundary layer in a Mach 2.9 flow with a Reynolds number of R e (theta) = 2240. Direct numerical simulations are undertaken to examine the impact of C-D riblets on the shock wave/boundary layer interaction and the feasibility of using them to mitigate flow separation. Over the riblet section, a large-scale secondary roll mode is produced by C-D riblets with the downwelling motion occurring around the diverging region and upwelling motion near the converging region. This consequently leads to a spanwise heterogeneity in mean quantities and turbulent structures over the riblet section and also in the interaction zone. Compared with the baseline case, the area of the separation zone for the riblet case experiences a dramatic local reduction of 92% in the diverging region, owing to the downwelling motion that injects the high-momentum fluid toward the wall and the near-wall spanwise velocity that transports the low-momentum fluid away. The enhanced upwelling motion around the converging region induced by C-D riblets, on the one hand, contributes to the decrease of the near-wall momentum and subsequently the increase of the local separation area. On the other hand, the upwelling motion effectively reduces the incoming Mach number upstream of the compression corner. This appears to reduce the strength of the separation shock, leading to a more gradual compression of the incoming flow that helps ease the enlargement of the separation area nearby. Overall, the area of the mean flow separation is reduced by 56%, indicating an effective flow separation control by the C-D riblets. Published under an exclusive license by AIP Publishing.
分类号	一类/力学重要期刊
资助项目	National Key Research and Development Program of China[2019YFA0405300] ; NSFC Project[91852203] ; NSFC Project[12072349] ; Innovation Fund of Shanghai Aerospace Science and Technology[SAST2021-001] ; UK Engineering and Physical Sciences Research Council (EPSRC) through the Computational Science Centre for Research Communities ; UK Turbulence Consortium[EP/R029326/1]
WOS关键词	TURBULENT-BOUNDARY-LAYER ; VORTEX GENERATORS ; FLOW
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000835653900011
资助机构	National Key Research and Development Program of China ; NSFC Project ; Innovation Fund of Shanghai Aerospace Science and Technology ; UK Engineering and Physical Sciences Research Council (EPSRC) through the Computational Science Centre for Research Communities ; UK Turbulence Consortium
其他责任者	Li, Xinliang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89858]
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.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.STFC Daresbury Lab, Sci Comp Dept, Warrington WA4 4AD, England; 3.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Guo TB,Fang, Jian,Zhang J,et al. Direct numerical simulation of shock-wave/boundary layer interaction controlled with convergent-divergent riblets[J]. PHYSICS OF FLUIDS,2022,34(8):18.
APA	郭同彪,Fang, Jian,张继,&李新亮.(2022).Direct numerical simulation of shock-wave/boundary layer interaction controlled with convergent-divergent riblets.PHYSICS OF FLUIDS,34(8),18.
MLA	郭同彪,et al."Direct numerical simulation of shock-wave/boundary layer interaction controlled with convergent-divergent riblets".PHYSICS OF FLUIDS 34.8(2022):18.