Abstract
Stirred tanks play a pivotal role in material blending, yet there is still a lack of data on inner complex blending mechanism, especially involving heterogeneous particle swarm with different shape combinations. This study extensively develops the DEM-VOF model, in which different drag force models are applied based on the identification of particle shapes. It aims to provide an insight into the blending system dynamics of heterogeneous particle swarms through seven arranged particle schemes building upon three different shapes. The results show that the oblate-prolate ellipsoid particle scheme has the optimal suspension performance, but demonstrates high power consumption. The addition of spherical particles into the oblate-prolate ellipsoid particle scheme has significant effect on particle suspension, fluid flow and the evolution of free surface, while contributes to a reduction in power consumption. This study presents an analysis of the hydrodynamics and optimization of blending systems involving heterogeneous particle swarms in stirred tanks.
Original language | English |
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Article number | 121103 |
Journal | Powder Technology |
Volume | 462 |
DOIs | |
Publication status | Published - Aug 2025 |
Keywords
- Blending
- DEM-VOF
- Free surface
- Heterogeneous particle swarms
- Stirred tanks