Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction

doi:10.1063/5.0094070

	Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction
	Tong FL(童福林)1; Yuan, Xianxu 1; Lai, Jiang1 ; Duan JY(段俊亦)2,3 ; Sun, Dong 1; Dong, Siwei 1
通讯作者	Dong, Siwei()
发表期刊	PHYSICS OF FLUIDS
	2022-06-01
卷号	34 期号:6 页码:16
ISSN	1070-6631
摘要	The characteristics of wall heat flux (WHF) beneath a supersonic turbulent boundary layer interacting with an impinging shock wave with a 33.2 degrees angle at Mach 2.25 are analyzed using direct numerical simulation. It is found that the QP85 scaling, defined as the ratio of the mean WHF and wall pressure, changes across the interaction. The probability density function of the WHF fluctuations normalized by the local root-mean-squared value is similar to that of wall shear stress. Comparing the WHF and wall pressure spectra shows that the low-frequency shock unsteadiness exhibits little influence on the spectrum. The space-time correlation of the fluctuating WHF reveals that both the streamwise correlation length scale and the convection velocity experience a sharp decrease in the separation region and subsequent recovery in the downstream region. Moreover, the mean WHF in an incident shock interaction is decomposed for the first time. An analysis of the velocity and temperature fluctuations based on bidimensional empirical mode decomposition is performed to evaluate the contribution of turbulent structures with specific spanwise length scales to the mean WHF generation. The decomposed results indicate that the contribution associated with the large-scale structures in the outer region is greatly amplified by the shock interaction and has the leading role in the generation downstream of the interaction. Published under an exclusive license by AIP Publishing
DOI	10.1063/5.0094070
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000806502300024
关键词[WOS]	DIRECT NUMERICAL-SIMULATION ; FLUCTUATIONS ; FLOWS ; WAVE
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National Natural Science Foundation of China[11972356] ; National Natural Science Foundation of China[91852203] ; National Key R&D Program of China[2019YFA0405300]
项目资助者	National Natural Science Foundation of China ; National Key R&D Program of China
论文分区	一类/力学重要期刊
力学所作者排名	3+
RpAuthor	Dong, Siwei
引用统计	被引频次：12[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/311007/89628
专题	高温气体动力学国家重点实验室
作者单位	1.State Key Lab Aerodynam, Mianyang 621000, Peoples R China; 2.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tong FL,Yuan, Xianxu,Lai, Jiang,et al. Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction[J]. PHYSICS OF FLUIDS,2022,34,6,:16.
APA	童福林,Yuan, Xianxu,Lai, Jiang,段俊亦,Sun, Dong,&Dong, Siwei.(2022).Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction.PHYSICS OF FLUIDS,34(6),16.
MLA	童福林,et al."Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction".PHYSICS OF FLUIDS 34.6(2022):16.

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