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Fluidization of spherocylindrical particles

Journal Article (2017)
Authors

V.V. Mahajan (TU Delft - Intensified Reaction and Separation Systems, Eindhoven University of Technology)

Tim M.J. Nijssen (Eindhoven University of Technology)

Barry W. Fitzgerald (TU Delft - Intensified Reaction and Separation Systems, Eindhoven University of Technology)

Jeroen Hofman (Eindhoven University of Technology)

Hans Kuipers (Eindhoven University of Technology)

Johan Padding (Eindhoven University of Technology, TU Delft - Intensified Reaction and Separation Systems)

Research Group
Intensified Reaction and Separation Systems
Copyright
© 2017 V.V. Mahajan, Tim M.J. Nijssen, B. Fitzgerald, Jeroen Hofman, Hans Kuipers, J.T. Padding
To reference this document use:
https://doi.org/10.1051/epjconf/201714006019
More Info
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Publication Year
2017
Language
English
Copyright
© 2017 V.V. Mahajan, Tim M.J. Nijssen, B. Fitzgerald, Jeroen Hofman, Hans Kuipers, J.T. Padding
Research Group
Intensified Reaction and Separation Systems
Volume number
140
DOI:
https://doi.org/10.1051/epjconf/201714006019
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Abstract

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.