Simulation of particle mixing in turbulent channel flow due to intrinsic fluid velocity fluctuation

被引：3
|
作者：
Burgener, Thomas [1 ]
Kadau, Dirk [1 ]
Herrmann, Hans J. [1 ]
机构：
[1] ETH Honggerberg, IfB, CH-8093 Zurich, Switzerland
来源：
PHYSICAL REVIEW E | 2011年 / 83卷 / 06期
关键词：
MODEL; ACCELERATIONS;
D O I：
10.1103/PhysRevE.83.066301
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We combine a discrete-element-method simulation with a stochastic process to model the movement of spherical particles in a turbulent channel flow. With this model we investigate the mixing properties of two species of particles flowing through the channel. We find a linear increase of the mixing zone with the length of the pipe. Flows at different Reynolds number are studied. Below a critical Reynolds number at the Taylor microscale of around R-c approximate to 300 the mixing rate is strongly dependent on the Reynolds number. Above R-c the mixing rate stays nearly constant.
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页数：8
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