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

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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.

Originele taal-2	Engels
Artikelnummer	100077
Aantal pagina's	12
Tijdschrift	Chemical Engineering Science: X
Volume	8
DOI's	https://doi.org/10.1016/j.cesx.2020.100077
Status	Gepubliceerd - nov. 2020

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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.",

keywords = "Bubble column, Computational fluid dynamics, Direct Simulation Monte Carlo, Free surface, Large scale, Volume of fluid",

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

year = "2020",

month = nov,

doi = "10.1016/j.cesx.2020.100077",

language = "English",

volume = "8",

journal = "Chemical Engineering Science: X",

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T1 - Influence of the free surface on hydrodynamics in a bubble column

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.

KW - Bubble column

KW - Computational fluid dynamics

KW - Direct Simulation Monte Carlo

KW - Free surface

KW - Large scale

KW - Volume of fluid

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JO - Chemical Engineering Science: X

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Influence of the free surface on hydrodynamics in a bubble column

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