中文版 | English
题名

Effect of wall temperature on the kinetic energy transfer in a hypersonic turbulent boundary layer

作者
通讯作者Wang,Jianchun
发表日期
2021-12-25
DOI
发表期刊
ISSN
0022-1120
EISSN
1469-7645
卷号929
摘要

The effect of wall temperature on the transfer of kinetic energy in a hypersonic turbulent boundary layer for different Mach numbers and wall temperature ratios is studied by direct numerical simulation. A cold wall temperature can enhance the compressibility effect in the near-wall region through increasing the temperature gradient and wall heat flux. It is shown that the cold wall temperature enhances the local reverse transfer of kinetic energy from small scales to large scales, and suppresses the local direct transfer of kinetic energy from large scales to small scales. The average filtered spatial convection and average filtered viscous dissipation are dominant in the near-wall region, while the average subgrid-scale flux of kinetic energy achieves its peak value in the buffer layer. It is found that the wall can suppress the inter-scale transfer of kinetic energy, especially for the situation of a cold wall. A strong local reverse transfer of fluctuating kinetic energy is identified in the buffer layer in the inertial range. Helmholtz decomposition is applied to analyse the compressibility effect on the subgrid-scale flux of kinetic energy. A strong transfer of the solenoidal component of fluctuating kinetic energy is identified in the buffer layer, while a significant transfer of the dilatational component of fluctuating kinetic energy is observed in the near-wall region. It is also shown that compression motions have a major contribution to the direct transfer of fluctuating kinetic energy, while expansion motions play a marked role in the reverse transfer of fluctuating kinetic energy.

关键词
相关链接[Scopus记录]
收录类别
EI ; SCI
语种
英语
学校署名
通讯
资助项目
National Natural Science Foundation of China (NSFC)[91952104,92052301,91752201] ; NSFC Basic Science Center Program[11988102] ; Technology and Innovation Commission of Shenzhen Municipality["KQTD20180411143441009","JCYJ20170412151759222"] ; Department of Science and Technology of Guangdong Province[2019B21203001]
WOS研究方向
Mechanics ; Physics
WOS类目
Mechanics ; Physics, Fluids & Plasmas
WOS记录号
WOS:000721289200001
出版者
EI入藏号
20214411107021
EI主题词
Atmospheric thermodynamics ; Boundary layer flow ; Buffer layers ; Compressibility ; Energy transfer ; Heat flux ; Hypersonic boundary layers ; Hypersonic flow ; Kinetic energy ; Turbulence ; Turbulent flow
EI分类号
Atmospheric Properties:443.1 ; Fluid Flow, General:631.1 ; Thermodynamics:641.1 ; Heat Transfer:641.2 ; Classical Physics; Quantum Theory; Relativity:931 ; Crystalline Solids:933.1 ; Materials Science:951
ESI学科分类
ENGINEERING
Scopus记录号
2-s2.0-85118309302
来源库
Scopus
引用统计
被引频次[WOS]:32
成果类型期刊论文
条目标识符//www.snoollab.com/handle/2SGJ60CL/254823
专题工学院_力学与航空航天工程系
作者单位
1.State Key Laboratory of Turbulence and Complex Systems,College of Engineering,Peking University,Beijing,100871,China
2.Guangdong Provincial Key Laboratory of Fundamental Turbulence Research and Applications,Center for Complex Flows and Soft Matter Research,Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing,100190,China
通讯作者单位力学与航空航天工程系
推荐引用方式
GB/T 7714
Xu,Dehao,Wang,Jianchun,Wan,Minping,et al. Effect of wall temperature on the kinetic energy transfer in a hypersonic turbulent boundary layer[J]. JOURNAL OF FLUID MECHANICS,2021,929.
APA
Xu,Dehao,Wang,Jianchun,Wan,Minping,Yu,Changping,Li,Xinliang,&Chen,Shiyi.(2021).Effect of wall temperature on the kinetic energy transfer in a hypersonic turbulent boundary layer.JOURNAL OF FLUID MECHANICS,929.
MLA
Xu,Dehao,et al."Effect of wall temperature on the kinetic energy transfer in a hypersonic turbulent boundary layer".JOURNAL OF FLUID MECHANICS 929(2021).
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