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arXiv · 1011.6585

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

Thomas Burgener·Dirk Kadau·Hans J. Herrmann
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Abstract

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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Thomas Burgener, Dirk Kadau, Hans J. Herrmann. 2011-02-28. Simulation of particle mixing in turbulent channel flow due to intrinsic fluid velocity fluctuation. https://doi.org/10.1103/physreve.83.066301

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