On the eddy viscosity model of periodic turbulent shear flows

被引：0
|
作者：
Wang, Xinjun [1 ]
Luo, Jisheng [1 ]
Zhou, Heng [1 ]
机构：
[1] Dept. of Mech., Tianjin Univ., Tianjin 300072, China
来源：
Acta Mechanica Sinica/Lixue Xuebao | 2003年 / 19卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Boundary conditions - Probability density function - Reynolds number - Turbulence - Viscosity;
D O I：
10.1007/bf02484581
中图分类号：
学科分类号：
摘要：
Physical argument shows that eddy viscosity is essentially different from molecular viscosity. By direct numerical simulation, it was shown that for periodic turbulent flows, there is phase difference between Reynolds stress and rate of strain. This finding posed great challenge to turbulence modeling, because most turbulence modeling, which use the idea of eddy viscosity, do not take this effect into account.
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页码：470 / 475
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