Abstract
The multi-scale features are the foundation of the inner laws existing in the multi-phase flow process. Computational fluid dynamics (CFD) method was used to study the inhomogeneous distribution and multi-scale features of the solid particles in DTB crystallizer. Suspension and flow field distributions of the particles under different stirring speed and different particle diameter were observed. The result showed: the higher the stirring speed, the smaller the particle diameter and the more homogeneous the suspension distribution. The inhomogeneous distribution of the particles in the crystallizer was mainly caused by vortex. The particle concentration was much lowers in the vortex center, meanwhile, the higher the stirring speed, the more the particles and vortex number, the vortex strength getting greater as well.
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