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

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.

6 figures, 1 table

References in corpus (4)

• Heavy particle concentration in turbulence at dissipative and inertial scales
• Experimental Lagrangian Acceleration Probability Density Function Measurement
• Modeling river delta formation
• Multifractal concentrations of inertial particles in smooth random flows

Cited by in corpus (1)

• Particle and particle pair dispersion in turbulence modeled with spatially and temporally correlated stochastic processes