Zhalehrajabi, E. and Lau, K.K. and Hagemeier, T. and Idris, A. (2022) Evaluation of hydrodynamic behavior of urea granules in a pseudo-2D fluidized bed using drag models and comparison with PIV technique. Powder Technology, 406. ISSN 00325910
Full text not available from this repository.Abstract
The urea fluidized bed hydrodynamics were simulated using computational fluid dynamics (CFD) vs. image processing technique. To identify the suitable model, sensitivity analyses on time step, number of nodes, and drag force coefficient were performed, and accordingly, Gidaspow and Syamlal�O�Brien drag models were selected to simulate the fluidized bed for - particles categorized under Geldart-D. The CFD data were validated against the determined particle velocity using an image processing technique. Results indicate that Gidaspow model predictions for particles velocity and granular temperature are in good agreement whereas the Syamlal�O�Brien model resulted in underestimated predictions. Further analysis using Gidaspow model, the particle velocity increased by 12.5, when the air inlet velocity is increased from 2 to 3 m/s and decreased by 87.5 when the particle sizes are changed from 2 to 4 mm. Although the primary loading height and pressure showed no effect, but at high pressures, it is important to consider humidity to avoid the negative impact on the granulation performance. © 2021
Item Type: | Article |
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Additional Information: | cited By 2 |
Uncontrolled Keywords: | Air; Computational fluid dynamics; Drag; Fluidized beds; Granulation; Hydrodynamics; Metabolism; Particle size; Particle size analysis; Pneumatics; Sensitivity analysis; Two phase flow; Urea; Velocity; Velocity measurement, Drag model; Eulerian simulations; Fluidized bed hydrodynamics; Hydrodynamic behavior; Image processing technique; Model sensitivity analysis; O'Brien; Particle velocities; PIV techniques; Pseudo-2D, Velocity control, urea, air inlet velocity; Article; bed height; behavior; biological model; computational fluid dynamics; computer model; drag force coefficient; drag model; flow rate; fluidization; fluidizing gas; friction packing limit; gas solid flow; geometry; gidaspow drag model; granular temperature; hydrodynamics; image processing; Inlet superficial gas velocity; mathematical model; nonhuman; number of node; packing limit; partial pressure; particle density; particle image velocimetry; particle size; physical parameters; restitution coefficient; sensitivity analysis; syamlal O brien drag model; temperature; time step; velocity |
Depositing User: | Mr Ahmad Suhairi UTP |
Date Deposited: | 19 Dec 2023 03:23 |
Last Modified: | 19 Dec 2023 03:23 |
URI: | https://khub.utp.edu.my/scholars/id/eprint/16608 |