Dynamical Simulation of Fluidized Beds --- Hydrodynamically Interacting Granular Particles

Details Dynamical Simulation of Fluidized Beds --- Hydrodynamically Interacting Granular Particles Dynamical Simulation of Fluidized Beds --- Hydrodynamically Interacting Granular Particles

1995-02-28

arxiv.org/abs/chao-dyn/9502021v2

Nonlinear Sciences

Chaotic Dynamics

29 pages, using REVTeX macro, 15 figures (Postscript); paper submitted to Phys. Rev. E.

Scientific paper

10.1103/PhysRevE.52.658

A numerical simulation of a gas-fluidized bed is performed without introduction of any empirical parameters. Realistic bubbles and slugs are observed in our simulation. It is found that the convective motion of particles is important for the bubbling phase and there is no convection in the slugging phase. From the simulation results, non-Gaussian distributions are found in the particle velocities and the relation between the deviation from Gaussian and the local density of particles is suggested. It is also shown that the power spectra of particle velocities obey power laws. A brief explanation on the relationship between the simulation results and the Kolmogorov scaling argument is discussed.

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