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Fine Mesh Computational Fluid Dynamics Study on Gas-Fluidization of Geldart A Particles: Homogeneous to Bubbling Bed

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dc.contributor.author Ray, Saumi
dc.date.accessioned 2021-11-11T11:04:17Z
dc.date.available 2021-11-11T11:04:17Z
dc.date.issued 2016-02-29
dc.identifier.uri https://pubs.acs.org/doi/10.1021/acs.iecr.5b03565
dc.identifier.uri http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/3408
dc.description.abstract Gas-fluidization of Geldart A particles was simulated for a domain of lab-scale dimensions. Hydrodynamics of homogeneous regime and transition to bubbling were studied. In this context a detailed fine mesh simulation study is presented for the first time, using the state-of-the-art two-fluid model (TFM). The effect of particle density was investigated. The fine mesh simulations were analyzed for insights into bed transition from homogeneous to bubbling regime and the effect of interparticle forces (IPFs). Simulations reveal that transition to bubbling occurs over a velocity range rather than at a discrete velocity. We propose an index to quantify the effect of IPFs on bed expansion. During homogeneous expansion this IPF index was found to drop exponentially with velocity. It became negligible as bubbling ensued which is in line with the literature. The simulated average bed voidage was found comparable to the corresponding Eulerian−Lagrangian and experimental data. en_US
dc.language.iso en en_US
dc.publisher ACS en_US
dc.subject Chemistry en_US
dc.subject Chemical Engieering en_US
dc.subject Stress en_US
dc.subject Chemical structure en_US
dc.title Fine Mesh Computational Fluid Dynamics Study on Gas-Fluidization of Geldart A Particles: Homogeneous to Bubbling Bed en_US
dc.type Article en_US


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