Three-dimensional computational fluid dynamics (CFD) study of the gas–particle circulation pattern within a fluidized bed granulator: By full factorial design of fluidization velocity and particle size

Abstract

The fluidization velocity and mean particle size were selected to be numerically investigated pertaining to their effects on the gas-particle circulation pattern within a fluidized bed granulator by three-dimensional CFD simulation applying an Eulerian-Eulerian two-fluid model (EETFM). The CFD simulations were designed by full-factorial design method and the developed CFD model was experimentally validated.The fluidization process was proved to reach a quasi-steady state. The gas-particle circulation pattern and particle concentration distribution were analyzed based on fluidization velocity and mean particle size. A mathematical model was developed to provide guidance on how to change fluidization level during one experiment.2 Graphical Abstract KEYWORDS: fluidized bed granulator; fluidization; computational fluid dynamics (CFD); gas-particle hydrodynamics; full-factorial design

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