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

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

2010-11-30

arxiv.org/abs/1011.6585v2

Physical Review E 83, 066301 (2011)

Physics

Fluid Dynamics

6 figures, 1 table

Scientific paper

10.1103/PhysRevE.83.066301

We combine a DEM 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 $R_{c} \approx 300$ the mixing rate is strongly dependent on the Reynolds number. Above $R_{c}$ the mixing rate stays nearly constant.

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