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Properties of the compressibility and transport motion in wall-bounded turbulent flows at Mach 8

文献类型：期刊论文

作者Li, Xin; Zhang, Siyuan4; Duan JY(段俊亦); Liu, Xiaobo; Wu, Wanghao
刊名INTERNATIONAL JOURNAL OF MODERN PHYSICS C ; 7
出版日期2022-07
卷号33页码:2250090
ISSN号0129-1831
关键词Direct numerical simulation turbulent boundary layer wall temperature effect high Mach number
DOI10.1142/S0129183122500905
英文摘要The compressibility effect and transport motion in highspeed turbulent boundary layer (TBL) is a fundamental problem because they dominate the average and statistical characteristics. Using the statistical methods and flow visualization technology, flat-plate TBLs at Ma(infinity) = 8 with high- and low-wall temperatures, T-w/T-infinity = 10.03 and 1.9, are investigated based on the direct numerical simulation (DNS) datasets. Compared with previous studies, this study considers relative higher Mach number and strong cold wall temperature condition at the same time. First, the turbulent Mach number and turbulent intensity show that the compressibility effects are enhanced by the cooling process. Second, the high-order statistical moments and structure parameters confirm cold wall that causes stronger compressibility and the corresponding increased intensities of local streamwise and wall-normal transport motions. Finally, for uncovering the relationship between the compressibility effect and turbulent transport, more indepth visualization analyses of velocity streaks are performed. It is found that 'knot-like' structures are generated when cooling the wall, and they lead to stronger intermittent, which results in the rapid increase of local compressibility effect and the wall-normal transport motion. Our research sheds light on providing a theoretical basis for further understanding the compressibility effects of TBL at high Mach number.
学科主题Computer Science, Interdisciplinary Applications ; Physics, Mathematical
分类号Q3
语种英语
WOS记录号WOS:000825477800006
资助机构NSFC Project [U20B2007]
其他责任者Zhang, SY (corresponding author), Univ Shanghai Sci & Technol, Sch Mech Engn, Shanghai 200093, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/90175]  
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.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China
3.Univ Shanghai Sci & Technol, Sch Mech Engn, Shanghai 200093, Peoples R China
4.Shanghai Electromech Engn Inst, Shanghai 201109, Peoples R China
推荐引用方式
GB/T 7714		 Li, Xin,Zhang, Siyuan,Duan JY,et al. Properties of the compressibility and transport motion in wall-bounded turbulent flows at Mach 8[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS C, 7,2022,33:2250090.
APA Li, Xin,Zhang, Siyuan,段俊亦,Liu, Xiaobo,&Wu, Wanghao.(2022).Properties of the compressibility and transport motion in wall-bounded turbulent flows at Mach 8.INTERNATIONAL JOURNAL OF MODERN PHYSICS C,33,2250090.
MLA Li, Xin,et al."Properties of the compressibility and transport motion in wall-bounded turbulent flows at Mach 8".INTERNATIONAL JOURNAL OF MODERN PHYSICS C 33(2022):2250090.

入库方式： OAI收割

来源：力学研究所

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