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CFD analysis of phase holdup behaviour in a gas-liquid bubble column

Experimental works on bubble column hydrodynamic are normally carried out on a laboratory scale less than 0.3 m with holes number less than 10. In this paper, we discuss several approaches to bubble column scale-up, relying on variables of parameters. Two spargers with different hole diameters (0.5...

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Main Authors: Abd Halim, Nur Khairunnisa, Hussain, Siti Aslina, Abd. Razak, Mus’ab, Mohd Yunos, Mohd Amirul Syafiq
Format: Article
Published: Faculty of Engineering Universiti Malaysia Sarawak 2021
Online Access:http://psasir.upm.edu.my/id/eprint/96318/
https://publisher.unimas.my/ojs/index.php/JASPE/article/view/3180
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spelling my.upm.eprints.963182023-01-31T02:06:08Z http://psasir.upm.edu.my/id/eprint/96318/ CFD analysis of phase holdup behaviour in a gas-liquid bubble column Abd Halim, Nur Khairunnisa Hussain, Siti Aslina Abd. Razak, Mus’ab Mohd Yunos, Mohd Amirul Syafiq Experimental works on bubble column hydrodynamic are normally carried out on a laboratory scale less than 0.3 m with holes number less than 10. In this paper, we discuss several approaches to bubble column scale-up, relying on variables of parameters. Two spargers with different hole diameters (0.5 mm and 1.25 mm) and superficial gas velocities (0.0125 m/s and 0.0501 m/s) are used to determine the distribution of gas holdup and liquid flow pattern. An Insignificant level of bed heights is investigated for the efficiency of hydrodynamic performance. Computational Fluid Dynamic (CFD) is used as the realistic representation of the actual reactor. The flow of the gas-liquid interface is implemented using the VOF model using the finite volume method by tracking the volume fraction of each of the fluids throughout the domain. It is observed that the initial bed heights, superficial gas velocity, and hole diameter of the sparger influence the overall gas holdup. Although the difference in sparger hole diameter affects overall gas holdup, the results are weak relative to other operating conditions. The simulation work is then compared with experimental data to improve the accuracy in analyzing the hydrodynamics of multiphase system, as well as validated the multidimensional models. Faculty of Engineering Universiti Malaysia Sarawak 2021 Article PeerReviewed Abd Halim, Nur Khairunnisa and Hussain, Siti Aslina and Abd. Razak, Mus’ab and Mohd Yunos, Mohd Amirul Syafiq (2021) CFD analysis of phase holdup behaviour in a gas-liquid bubble column. Journal of Applied Science & Process Engineering, 8 (1). 738 - 749. ISSN 2289-7771 https://publisher.unimas.my/ojs/index.php/JASPE/article/view/3180 10.33736/jaspe.3180.2021
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Experimental works on bubble column hydrodynamic are normally carried out on a laboratory scale less than 0.3 m with holes number less than 10. In this paper, we discuss several approaches to bubble column scale-up, relying on variables of parameters. Two spargers with different hole diameters (0.5 mm and 1.25 mm) and superficial gas velocities (0.0125 m/s and 0.0501 m/s) are used to determine the distribution of gas holdup and liquid flow pattern. An Insignificant level of bed heights is investigated for the efficiency of hydrodynamic performance. Computational Fluid Dynamic (CFD) is used as the realistic representation of the actual reactor. The flow of the gas-liquid interface is implemented using the VOF model using the finite volume method by tracking the volume fraction of each of the fluids throughout the domain. It is observed that the initial bed heights, superficial gas velocity, and hole diameter of the sparger influence the overall gas holdup. Although the difference in sparger hole diameter affects overall gas holdup, the results are weak relative to other operating conditions. The simulation work is then compared with experimental data to improve the accuracy in analyzing the hydrodynamics of multiphase system, as well as validated the multidimensional models.
format Article
author Abd Halim, Nur Khairunnisa
Hussain, Siti Aslina
Abd. Razak, Mus’ab
Mohd Yunos, Mohd Amirul Syafiq
spellingShingle Abd Halim, Nur Khairunnisa
Hussain, Siti Aslina
Abd. Razak, Mus’ab
Mohd Yunos, Mohd Amirul Syafiq
CFD analysis of phase holdup behaviour in a gas-liquid bubble column
author_facet Abd Halim, Nur Khairunnisa
Hussain, Siti Aslina
Abd. Razak, Mus’ab
Mohd Yunos, Mohd Amirul Syafiq
author_sort Abd Halim, Nur Khairunnisa
title CFD analysis of phase holdup behaviour in a gas-liquid bubble column
title_short CFD analysis of phase holdup behaviour in a gas-liquid bubble column
title_full CFD analysis of phase holdup behaviour in a gas-liquid bubble column
title_fullStr CFD analysis of phase holdup behaviour in a gas-liquid bubble column
title_full_unstemmed CFD analysis of phase holdup behaviour in a gas-liquid bubble column
title_sort cfd analysis of phase holdup behaviour in a gas-liquid bubble column
publisher Faculty of Engineering Universiti Malaysia Sarawak
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/96318/
https://publisher.unimas.my/ojs/index.php/JASPE/article/view/3180
_version_ 1756685790916640768
score 13.211869

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