Statistical analysis of temperature distribution on vortex surfaces in hypersonic turbulent boundary layer

doi:10.1063/1.5115541

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

	Statistical analysis of temperature distribution on vortex surfaces in hypersonic turbulent boundary layer
	Lin X(林鑫)2,3; Tong FL(童福林)1,3; Yu ZP(于长平)3; Li XL(李新亮)2,3
刊名	PHYSICS OF FLUIDS
	2019-10-01
卷号	31 期号:10 页码:7
ISSN号	1070-6631
DOI	10.1063/1.5115541
通讯作者	Li, Xin-Liang(lixl@imech.ac.cn)
英文摘要	The nonuniform temperature distribution (NUTD) on the coherent vortex surfaces of hypersonic turbulent boundary layer (TBL) is studied using the conditional sampling technique. The direct numerical simulation data of Mach 8 flat-plate TBL flows with different wall temperatures, T-w/T-infinity = 10.03 and 1.9, are used for this research, and the coherent vortex surface is identified by the O-criterion. Two characteristic sides of the vortex are defined, which are represented by the positive and negative streamwise velocity fluctuations (+/- u') of the vortex surfaces. The conditional sampling results between the mean temperature of the two sides show that there is a significant difference of up to 20% at the same wall-normal location. Furthermore, the velocity-temperature fluctuation correlations (R-u'T' and R-v'T') at the characteristic sides of vortex surfaces are studied. It is found that the temperature fluctuations are redistributed by the vortex rotational motion that has taken effect through R-u'T' and R-v'T' and then lead to the NUTD. The NUTD features are changed quantitatively by wall cooling but share the similar mechanism as that of the higher-temperature case. Published under license by AIP Publishing.
分类号	一类/力学重要期刊
资助项目	NSFC Project[91852203] ; NSFC Project[11472278] ; National Key Research and Development Program of China[2016YFA0401200] ; Science Challenge Project[TZ2016001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDC01000000]
WOS关键词	DIRECT NUMERICAL-SIMULATION ; WALL TEMPERATURE ; IDENTIFICATION ; REGION
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000506026700018
资助机构	NSFC Project ; National Key Research and Development Program of China ; Science Challenge Project ; Strategic Priority Research Program of Chinese Academy of Sciences
其他责任者	Li, Xin-Liang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/81312]
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.China Aerodynam Res & Dev Ctr, Computat Aerodynam Inst, Mianyang 621000, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Lin X,Tong FL,Yu ZP,et al. Statistical analysis of temperature distribution on vortex surfaces in hypersonic turbulent boundary layer[J]. PHYSICS OF FLUIDS,2019,31(10):7.
APA	林鑫,童福林,于长平,&李新亮.(2019).Statistical analysis of temperature distribution on vortex surfaces in hypersonic turbulent boundary layer.PHYSICS OF FLUIDS,31(10),7.
MLA	林鑫,et al."Statistical analysis of temperature distribution on vortex surfaces in hypersonic turbulent boundary layer".PHYSICS OF FLUIDS 31.10(2019):7.