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

doi:10.1063/5.0102261

	Direct numerical simulation of shock-wave/boundary layer interaction controlled with convergent-divergent riblets
	Guo TB(郭同彪)1; Fang, Jian 2; Zhang J(张继)1,3; Li XL(李新亮)1,3
通讯作者	Li, Xinliang([email protected])
发表期刊	PHYSICS OF FLUIDS
	2022-08-01
卷号	34 期号:8 页码:18
ISSN	1070-6631
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.
DOI	10.1063/5.0102261
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000835653900011
关键词[WOS]	TURBULENT-BOUNDARY-LAYER ; VORTEX GENERATORS ; FLOW
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
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]
项目资助者	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
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	李新亮
引用统计	被引频次：16[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/311007/89859
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 2.STFC Daresbury Lab, Sci Comp Dept, Warrington WA4 4AD, England; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, 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.Rp_Au:李新亮
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.

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