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Physics > Fluid Dynamics

arXiv:1912.04989 (physics)
[Submitted on 10 Dec 2019 (v1), last revised 31 Mar 2020 (this version, v2)]

Title:Mimicking layer inversion in solid-liquid fluidized beds in narrow tubes

Authors:Fernando David Cúñez Benalcázar, Erick de Moraes Franklin
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Abstract:This paper investigates experimentally and numerically the dynamics of solid particles during the layer inversion of binary solid-liquid fluidized beds in narrow tubes. Layer inversion can happen in solid classifiers and biological reactors, where different solid particles coexist and segregation by diameter and density occurs. The fluidized beds were formed in a 25.4 mm-ID pipe and consisted of alumina and aluminum beads with diameters of 6 and 4.8 mm, respectively. We placed initially the lighter particles on the bottom in order to force an inversion of layers, mimicking the layer inversion mechanism. In the experiments, we filmed the bed with a high-speed camera and tracked individual beads along images, while in numerical simulations we computed the bed evolution with a CFD-DEM (computational fluid dynamics - discrete element method) code. We found the distances traveled by individual particles during the inversion and the characteristic time for layer inversion.
Comments: Accepted Manuscript for Powder Technology, v. 364, p. 994-1008, 2020, DOI:https://doi.org/10.1016/j.powtec.2019.09.089. This manuscript version is made available under the CC-BY-NC-ND 4.0 license this http URL
Subjects: Fluid Dynamics (physics.flu-dyn); Soft Condensed Matter (cond-mat.soft)
Cite as: arXiv:1912.04989 [physics.flu-dyn]
  (or arXiv:1912.04989v2 [physics.flu-dyn] for this version)
  https://doi.org/10.48550/arXiv.1912.04989
Journal reference: Powder Technology, v. 364, p. 994-1008, 2020, DOI:10.1016/j.powtec.2019.09.089
Related DOI: https://doi.org/10.1016/j.powtec.2019.09.089

Submission history

From: Erick Franklin [view email]
[v1] Tue, 10 Dec 2019 21:27:20 UTC (2,713 KB)
[v2] Tue, 31 Mar 2020 22:11:13 UTC (2,713 KB)
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