ON the mechanism of turbulent coherent structure (III) - A statistical and dynamical model of coherent structure and its heat transfer mechanism

被引:0
|
作者
Zhiming L. [1 ]
Yulu L. [1 ]
机构
[1] Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University
关键词
Coherent structure; Heat transfer; Statistical and dynamical model;
D O I
10.1007/BF02457744
中图分类号
学科分类号
摘要
Following Tsai & Ma[1] and Tsai & Liu[2], a statistical and dynamical near-wall turbulent coherent structural model with separate consideration of two different portions: locally generated and upstream-transported large eddies has been established. With this model, heat transfer in a fully developed open channel in the absence of pressure gradient is numerically simulated. Database of fluctuations of velocity and temperature has also been set. Numerical analysis shows the existence of high-low temperature streak caused by near-wall coherent structure and its swing in the lateral direction. Numerical results are in accordance with the computations and experimental results of other researchers.
引用
收藏
页码:705 / 711
页数:6
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