Influence of the free surface on hydrodynamics in a bubble column

M. V. Masterov; M. W. Baltussen; J. A.M. Kuipers

doi:10.1016/j.cesx.2020.100077

Influence of the free surface on hydrodynamics in a bubble column

M. V. Masterov, M. W. Baltussen (Corresponding author), J. A.M. Kuipers

Multi-scale Modelling of Multi-phase Flows

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

1 Citation (Scopus)

Abstract

In this paper, the influence of the free surface on hydrodynamics is investigated numerically for a pilot-scale bubble column. The free surface is modelled by means of the Volume of Fluid method (VOF), whereas the gas entities are represented by means of the Direct Simulation Monte Carlo (DSMC) method. The VOF method is parallelized using MPI and incorporated in already parallel in-house numerical code for DSMC, FoxBerry. The results obtained with the modeled free surface are compared with the reference simulation, in which the free surface is mimicked using the outlet slits, placed at the top of the column. The results show a significant impact of the free surface on generation of the small-scale eddies. Moreover, the presence of the free surface reduces the gas-holdup in the domain.

Original language	English
Article number	100077
Number of pages	12
Journal	Chemical Engineering Science: X
Volume	8
DOIs	https://doi.org/10.1016/j.cesx.2020.100077
Publication status	Published - Nov 2020

Keywords

Bubble column
Computational fluid dynamics
Direct Simulation Monte Carlo
Free surface
Large scale
Volume of fluid

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10.1016/j.cesx.2020.100077

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title = "Influence of the free surface on hydrodynamics in a bubble column",

abstract = "In this paper, the influence of the free surface on hydrodynamics is investigated numerically for a pilot-scale bubble column. The free surface is modelled by means of the Volume of Fluid method (VOF), whereas the gas entities are represented by means of the Direct Simulation Monte Carlo (DSMC) method. The VOF method is parallelized using MPI and incorporated in already parallel in-house numerical code for DSMC, FoxBerry. The results obtained with the modeled free surface are compared with the reference simulation, in which the free surface is mimicked using the outlet slits, placed at the top of the column. The results show a significant impact of the free surface on generation of the small-scale eddies. Moreover, the presence of the free surface reduces the gas-holdup in the domain.",

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author = "Masterov, {M. V.} and Baltussen, {M. W.} and Kuipers, {J. A.M.}",

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AU - Masterov, M. V.

AU - Baltussen, M. W.

AU - Kuipers, J. A.M.

PY - 2020/11

Y1 - 2020/11

N2 - In this paper, the influence of the free surface on hydrodynamics is investigated numerically for a pilot-scale bubble column. The free surface is modelled by means of the Volume of Fluid method (VOF), whereas the gas entities are represented by means of the Direct Simulation Monte Carlo (DSMC) method. The VOF method is parallelized using MPI and incorporated in already parallel in-house numerical code for DSMC, FoxBerry. The results obtained with the modeled free surface are compared with the reference simulation, in which the free surface is mimicked using the outlet slits, placed at the top of the column. The results show a significant impact of the free surface on generation of the small-scale eddies. Moreover, the presence of the free surface reduces the gas-holdup in the domain.

AB - In this paper, the influence of the free surface on hydrodynamics is investigated numerically for a pilot-scale bubble column. The free surface is modelled by means of the Volume of Fluid method (VOF), whereas the gas entities are represented by means of the Direct Simulation Monte Carlo (DSMC) method. The VOF method is parallelized using MPI and incorporated in already parallel in-house numerical code for DSMC, FoxBerry. The results obtained with the modeled free surface are compared with the reference simulation, in which the free surface is mimicked using the outlet slits, placed at the top of the column. The results show a significant impact of the free surface on generation of the small-scale eddies. Moreover, the presence of the free surface reduces the gas-holdup in the domain.

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KW - Computational fluid dynamics

KW - Direct Simulation Monte Carlo

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KW - Large scale

KW - Volume of fluid

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Influence of the free surface on hydrodynamics in a bubble column

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