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.

引用

页数：8

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