Abstract
This paper presents a 2D soft-sphere discrete element method (DEM) simulation study of bubble formation in fluidized beds of Geldart Group B powders with and without externally imposed cohesive interparticle force. The effect of interparticle force on bubble formation and bubble characteristics is studied by inducing a single bubble at the centre of the distributor of a 2D bed that contains 36000 mono-sized particles having a diameter of 500 mu m and density of 1000 kg m(-3). It is observed that in the presence of externally imposed cohesive interparticle force, the bubble formation process not only requires a higher air velocity for its initiation, but it is also slower when compared to the case with no interparticle force. (c) 2006 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 159 - 166 |
Number of pages | 8 |
Journal | Chemical Engineering Science |
Volume | 62 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2007 |