Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer

doi:10.4208/cicp.221113.280714a

	Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer
其他题名	COMMUNICATIONS IN COMPUTATIONAL PHYSICS
	Liang X; Li XL(李新亮); Li, XL (reprint author), Chinese Acad Sci, Inst Mech, LHD, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
发表期刊	COMMUNICATIONS IN COMPUTATIONAL PHYSICS
	2015-01
卷号	17 期号:1 页码:189-212
ISSN	1815-2406
摘要	In this paper, direct numerical simulation (DNS) is presented for spatially evolving turbulent boundary layer over an isothermal flat-plate at Ma(infinity) = 2.25,5,6,8. When Ma(infinity) = 8, two cases with the ratio of wall-to-reference temperature T-w/T-infinity = 1.9 and 10.03 are considered respectively. The wall temperature approaches recovery temperatures for other cases. The characteristics of compressible turbulent boundary layer (CTBL) affected by freestream Mach number and wall temperature are investigated. It focuses on assessing compressibility effects and the validity of Morkovin's hypothesis through computing and analyzing the mean velocity profile, turbulent intensity, the strong Reynolds analogy (SRA) and possibility density function of dilatation term. The results show that, when the wall temperature approaches recovery temperature, the effects of Mach number on compressibility is insignificant. As a result, the compressibility effect is very weak and the Morkovin's hypothesis is still valid for Mach number even up to 8. However, when Mach number equal to 8, the wall temperature effect on the compressibility is sensitive. In this case, when T-w/T-infinity = 1.9, the Morkovin's hypothesis is not fully valid. The validity of classical SRA depends on wall temperature directly. A new modified SRA is proposed to eliminate such negative factor in near wall region. Finally the effects of Mach number and wall temperature on streaks are also studied.
关键词	Hypersonic Directly Numerical Simulation Compressibility Effects Turbulent Boundary Layer Strong Reynolds Analogy
DOI	10.4208/cicp.221113.280714a
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000353692300007
关键词[WOS]	HIGH-ORDER ; WENO SCHEME ; CONVECTION ; RESOLUTION ; DNS
WOS研究方向	Physics
WOS类目	Physics, Mathematical
项目资助者	NSFC Projects [11072248] ; 973 Program [2009CB724100] ; 863 Program [2012AA01A304] ; CAS Information Project [INFO-115-B01]
课题组名称	LHD可压缩湍流
论文分区	二类/Q1
引用统计	被引频次：30[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/311007/49988
专题	高温气体动力学国家重点实验室
通讯作者	Li, XL (reprint author), Chinese Acad Sci, Inst Mech, LHD, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Liang X,Li XL,Li, XL . Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer[J]. COMMUNICATIONS IN COMPUTATIONAL PHYSICS,2015,17,1,:189-212.
APA	Liang X,Li XL,&Li, XL .(2015).Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer.COMMUNICATIONS IN COMPUTATIONAL PHYSICS,17(1),189-212.
MLA	Liang X,et al."Direct Numerical Simulation on Mach Number and Wall Temperature Effects in the Turbulent Flows of Flat-Plate Boundary Layer".COMMUNICATIONS IN COMPUTATIONAL PHYSICS 17.1(2015):189-212.

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