The Analysis of Turbulence Intensity and Reynolds Shear Stress in Wall-Bounded Turbulent Flows at High Reynolds Numbers

被引:6
作者
Liu, Hong-You [1 ,2 ]
Bo, Tian-Li [1 ,2 ]
Wang, Guo-Hua [1 ,2 ]
Zheng, Xiao-Jing [1 ,2 ]
机构
[1] Lanzhou Univ, Key Lab Mech Western Disaster & Environm, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Dept Mech, Lanzhou 730000, Peoples R China
基金
国家教育部科学基金资助; 中国国家自然科学基金;
关键词
Atmosphere surface layer; High Reynolds number; Reynolds stress; Turbulence intensity; Wall turbulence; SCALE STRUCTURE; WAKE MODEL; LAYER; REGION;
D O I
10.1007/s10546-013-9859-1
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
We investigated the turbulent intensities and Reynolds shear stress at high Reynolds number in the atmosphere surface layer (ASL) through analyzing observations in near-neutral stratified conditions. The results show that with increasing Reynolds number the streamwise turbulent intensity increases linearly, and the peak of the Reynolds shear stress extends to a higher non-dimensional height, which means that the thickness of the logarithmic region increases. Furthermore, our results provide evidence for treating the ASL as a canonical turbulent boundary layer, the results of which can be extended and applied to higher Reynolds number wall turbulence in the ASL.
引用
收藏
页码:33 / 47
页数:15
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