Lateral mixing in a meandering open channel flow

被引:0
|
作者
Folke, F. [1 ]
Moncho-Esteve, I. [1 ]
Garcia-Villalba, M. [1 ]
Braun, C. [1 ]
Palau-Salvador, G. [1 ]
机构
[1] Univ Karlsruhe, Inst Water & River Basin Management, Karlsruhe, Germany
关键词
Large Eddy Simulation; Scalar Transport; River Flow; Turbulence; DISPERSION;
D O I
暂无
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A large eddy simulation of flow in a periodic meandering open channel with a rectangular cross-section is presented. The Reynolds number based on the channel height is 40.000 and the aspect ratio of the cross-section is 4.48. Furthermore, the transport and mixing of a passive scalar is analysed using three different positions of release, e.g. on the inner bank, on the outer bank and on the center of the cross section. The obtained depth-average concentration profiles show good agreement with available experimental data. The role of the secondary motions in the mixing processes is the main focus of the discussion.
引用
收藏
页码:93 / 96
页数:4
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