Fluidization of spherocylindrical particles

V.V. Mahajan, T.M.J. Nijssen, B. Fitzgerald, J. Hofman, J.A.M. Kuipers, J.T. Padding

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

7 Citaten (Scopus)
121 Downloads (Pure)

Samenvatting

Multiphase (gas-solid) flows are encountered in numerous industrial applications such as pharmaceutical, food, agricultural processing and energy generation. A coupled computational fluid dynamics (CFD) and discrete element method (DEM) approach is a popular way to study such flows at a particle scale. However, most of these studies deal with spherical particles while in reality, the particles are rarely spherical. The particle shape can have significant effect on hydrodynamics in a fluidized bed. Moreover, most studies in literature use inaccurate drag laws because accurate laws are not readily available. The drag force acting on a non-spherical particle can vary considerably with particle shape, orientation with the flow, Reynolds number and packing fraction. In this work, the CFD-DEM approach is extended to model a laboratory scale fluidized bed of spherocylinder (rod-like) particles. These rod-like particles can be classified as Geldart D particles and have an aspect ratio of 4. Experiments are performed to study the particle flow behavior in a quasi-2D fluidized bed. Numerically obtained results for pressure drop and bed height are compared with experiments. The capability of CFD-DEM approach to efficiently describe the global bed dynamics for fluidized bed of rod-like particles is demonstrated.

Originele taal-2Engels
Artikelnummer06019
Aantal pagina's4
TijdschriftEPJ Web of Conferences
Volume140
DOI's
StatusGepubliceerd - 30 jun 2017
Evenement8th International Conference on Micromechanics on Granular Media (Powders and Grains (PG)2017), July 3-7, 2017, Montpellier, France - Corum conference cente, Montpellier, Frankrijk
Duur: 3 jul 20177 jul 2017
http://www.pg2017.org/en/

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