Shock wave and turbulent boundary layer interaction in a double compression ramp

doi:10.1016/j.compfluid.2021.105087

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

	Shock wave and turbulent boundary layer interaction in a double compression ramp
	Tong FL(童福林)2,3,4; Duan JY(段俊亦)1,4; Li XL(李新亮)1,4
刊名	COMPUTERS & FLUIDS
	2021-10-30
卷号	229 页码:15
关键词	Shock wave Turbulent boundary layer Double compression ramp Direct numerical simulation
ISSN号	0045-7930
DOI	10.1016/j.compfluid.2021.105087
通讯作者	Li, Xinliang(lixl@imech.ac.cn)
英文摘要	Direct numerical simulations of shock wave and supersonic turbulent boundary layer interaction in a double compression ramp with fixed ramp angles of 12 degrees and 24 degrees at Mach 2.9 are conducted. The characteristics of the shock interactions are investigated for four different length between the two ramp kinks, corresponding to L-c = 0.9 delta(ref), 1.8 delta(ref), 2.7 delta(ref), and 3.6 delta(ref) (delta(ref) being the upstream turbulent boundary layer thickness). The influence of increasing L-c on flow structures, unsteadiness, Reynolds stress, turbulence kinetic energy, and Reynolds stress anisotropy tensor is assessed. The size of the separation region is significantly decreased and reattached flow appears between the two ramp kinks. Streamwise vorticity contours and streamline curvature show the decreased spanwise width and increased spanwise coherency of Gortler-like vortices. Analysis of fluctuating wall pressure indicates that the low-frequency unsteadiness is strongly suppressed in the interaction region. Profiles of Reynolds stress components and turbulence kinetic energy exhibit different turbulence evolution across the interaction, leading to substantial differences observed in the anisotropy invariant map. It is found that the near wall region is characterized by decreased anisotropy, becoming closer to the axisymmetric compression state, while a significant increase of turbulence is identified in the outer region, following the axisymmetric expansion limit. Moreover, downstream of the interaction, turbulence in the near-wall region experiences a faster recovery and the influence of L-c is found to be marginal. The main effect of L-c is observed in the outer region, an increase of L-c resulting in a monotonic decay of turbulence intensities and an inward movement of turbulent structures.
分类号	二类
资助项目	NSFC[11972356] ; NSFC[91852203] ; National Key Research and Development Program of China[2019YFA0405300]
WOS关键词	DIRECT NUMERICAL-SIMULATION ; LARGE-EDDY SIMULATION
WOS研究方向	Computer Science ; Mechanics
语种	英语
WOS记录号	WOS:000697029200004
资助机构	NSFC ; National Key Research and Development Program of China
其他责任者	Li, Xinliang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87435]
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.China Aerodynam Res & Dev Ctr, Computat Aerodynam Inst, Mianyang 621000, Sichuan, Peoples R China; 3.China Aerodynam Res & Dev Ctr, State Key Lab Aerodynam, Mianyang 621000, Sichuan, Peoples R China; 4.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Tong FL,Duan JY,Li XL. Shock wave and turbulent boundary layer interaction in a double compression ramp[J]. COMPUTERS & FLUIDS,2021,229:15.
APA	童福林,段俊亦,&李新亮.(2021).Shock wave and turbulent boundary layer interaction in a double compression ramp.COMPUTERS & FLUIDS,229,15.
MLA	童福林,et al."Shock wave and turbulent boundary layer interaction in a double compression ramp".COMPUTERS & FLUIDS 229(2021):15.