Settling and fluidization of tall cylinders in solid-liquid suspensions

Jacobus Derksen

doi:10.1002/aic.18072

Settling and fluidization of tall cylinders in solid-liquid suspensions

Jacobus Derksen^* (Corresponding Author)

^*Corresponding author for this work

Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We numerically study how rigid solid cylinders with a length over diameter aspect ratio of 10 settle through suspensions consisting of uniformly sized solid spheres and Newtonian liquid. We identify regimes with preference for horizontal settling and vertical settling of the cylinders dependent on the overall solids volume fraction (in the range of 0 to 0.58) and the Archimedes number of the cylinders. These insights we use to interpret the behaviour of fluidized suspensions consisting of mixtures of spheres and cylinders with an emphasis on cylinder orientation distributions and slip velocities between solids and liquid phase. The three-dimensional and time dependent simulations explicitly resolve the solid-liquid interfaces by applying an immersed boundary method contained in a lattice-Boltzmann flow solver.

Original language	English
Article number	e18072
Number of pages	10
Journal	AIChE Journal
Volume	69
Issue number	7
DOIs	https://doi.org/10.1002/aic.18072
Publication status	Published - Jul 2023

Data Availability Statement

Data available on request from the authors.

Keywords

particle-resolved simulation
non-spherical particles
lattice-Boltzmann method
liquid fluidization

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abstract = "We numerically study how rigid solid cylinders with a length over diameter aspect ratio of 10 settle through suspensions consisting of uniformly sized solid spheres and Newtonian liquid. We identify regimes with preference for horizontal settling and vertical settling of the cylinders dependent on the overall solids volume fraction (in the range of 0 to 0.58) and the Archimedes number of the cylinders. These insights we use to interpret the behaviour of fluidized suspensions consisting of mixtures of spheres and cylinders with an emphasis on cylinder orientation distributions and slip velocities between solids and liquid phase. The three-dimensional and time dependent simulations explicitly resolve the solid-liquid interfaces by applying an immersed boundary method contained in a lattice-Boltzmann flow solver.",

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AU - Derksen, Jacobus

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N2 - We numerically study how rigid solid cylinders with a length over diameter aspect ratio of 10 settle through suspensions consisting of uniformly sized solid spheres and Newtonian liquid. We identify regimes with preference for horizontal settling and vertical settling of the cylinders dependent on the overall solids volume fraction (in the range of 0 to 0.58) and the Archimedes number of the cylinders. These insights we use to interpret the behaviour of fluidized suspensions consisting of mixtures of spheres and cylinders with an emphasis on cylinder orientation distributions and slip velocities between solids and liquid phase. The three-dimensional and time dependent simulations explicitly resolve the solid-liquid interfaces by applying an immersed boundary method contained in a lattice-Boltzmann flow solver.

AB - We numerically study how rigid solid cylinders with a length over diameter aspect ratio of 10 settle through suspensions consisting of uniformly sized solid spheres and Newtonian liquid. We identify regimes with preference for horizontal settling and vertical settling of the cylinders dependent on the overall solids volume fraction (in the range of 0 to 0.58) and the Archimedes number of the cylinders. These insights we use to interpret the behaviour of fluidized suspensions consisting of mixtures of spheres and cylinders with an emphasis on cylinder orientation distributions and slip velocities between solids and liquid phase. The three-dimensional and time dependent simulations explicitly resolve the solid-liquid interfaces by applying an immersed boundary method contained in a lattice-Boltzmann flow solver.

KW - particle-resolved simulation

KW - non-spherical particles

KW - lattice-Boltzmann method

KW - liquid fluidization

U2 - 10.1002/aic.18072

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JO - AIChE Journal

JF - AIChE Journal

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M1 - e18072

ER -

Settling and fluidization of tall cylinders in solid-liquid suspensions

Abstract

Data Availability Statement

Keywords

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