CFD simulation of the dynamic flow behavior in a bubble column reactor

In this project report an Eulerian two-phase Computational Fluid Dynamics (CFD) model for modelling bubble columns is presented. This model is able to predict the bubbly flow parameter such as gas holdup, contact surface area, air volume fraction, pressure drop, and velocity magnitude to understandi...

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Main Author:	Md Hasan, Sazali
Format:	Thesis
Language:	English English English
Published:	2015
Subjects:	TA349-359 Mechanics of engineering Applied mechanics
Online Access:	http://eprints.uthm.edu.my/1483/3/SAZALI%20MD%20HASAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1483/1/24p%20SAZALI%20MD%20HASAN.pdf http://eprints.uthm.edu.my/1483/2/SAZALI%20MD%20HASAN%20WATERMARK.pdf
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spelling	my-uthm-ep.14832021-10-03T07:43:08Z CFD simulation of the dynamic flow behavior in a bubble column reactor 2015-07 Md Hasan, Sazali TA349-359 Mechanics of engineering. Applied mechanics In this project report an Eulerian two-phase Computational Fluid Dynamics (CFD) model for modelling bubble columns is presented. This model is able to predict the bubbly flow parameter such as gas holdup, contact surface area, air volume fraction, pressure drop, and velocity magnitude to understanding the hydrodynamic flow behaviors. Three types of gas distributor design are tested on the 1.5 m height and 0.15 m diameter bubble column cylinder. Five different velocities are used on the each gas distributor design in order to produces a variety flow pattern in the bubble column. The ANSYS Fluent Workbench 15.0 was used as the numerical solution to make the simulation analysis on the bubble column problems. In this simulation, gas (air) is dispersed through the gas distributor into liquid (water) in the bubble column to produces the bubbles rising along the cylinder. The graphically simulation result of gas holdup and velocity profile are compare to the previous simulation result similarly tendency in shape. Quite good agreement is obtained. It observed that by increasing the superficial gas velocity, gas holdup also increases and magnitude velocity will decreases when approached the wall. From the simulation result obtained, design “c” with larger holes diameter and open area ratio mostly given the highest value of gas holdup, contact surface area, air volume fraction and magnitude velocity compare to other design. The gas distributor holes sizing will be determined the size of bubble produces. The large bubble having more buoyancy force and rise velocity compare to small bubble. 2015-07 Thesis http://eprints.uthm.edu.my/1483/ http://eprints.uthm.edu.my/1483/3/SAZALI%20MD%20HASAN%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/1483/1/24p%20SAZALI%20MD%20HASAN.pdf text en public http://eprints.uthm.edu.my/1483/2/SAZALI%20MD%20HASAN%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Faculty of Mechanical and Manufacturing Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TA349-359 Mechanics of engineering Applied mechanics
spellingShingle	TA349-359 Mechanics of engineering Applied mechanics Md Hasan, Sazali CFD simulation of the dynamic flow behavior in a bubble column reactor
description	In this project report an Eulerian two-phase Computational Fluid Dynamics (CFD) model for modelling bubble columns is presented. This model is able to predict the bubbly flow parameter such as gas holdup, contact surface area, air volume fraction, pressure drop, and velocity magnitude to understanding the hydrodynamic flow behaviors. Three types of gas distributor design are tested on the 1.5 m height and 0.15 m diameter bubble column cylinder. Five different velocities are used on the each gas distributor design in order to produces a variety flow pattern in the bubble column. The ANSYS Fluent Workbench 15.0 was used as the numerical solution to make the simulation analysis on the bubble column problems. In this simulation, gas (air) is dispersed through the gas distributor into liquid (water) in the bubble column to produces the bubbles rising along the cylinder. The graphically simulation result of gas holdup and velocity profile are compare to the previous simulation result similarly tendency in shape. Quite good agreement is obtained. It observed that by increasing the superficial gas velocity, gas holdup also increases and magnitude velocity will decreases when approached the wall. From the simulation result obtained, design “c” with larger holes diameter and open area ratio mostly given the highest value of gas holdup, contact surface area, air volume fraction and magnitude velocity compare to other design. The gas distributor holes sizing will be determined the size of bubble produces. The large bubble having more buoyancy force and rise velocity compare to small bubble.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Md Hasan, Sazali
author_facet	Md Hasan, Sazali
author_sort	Md Hasan, Sazali
title	CFD simulation of the dynamic flow behavior in a bubble column reactor
title_short	CFD simulation of the dynamic flow behavior in a bubble column reactor
title_full	CFD simulation of the dynamic flow behavior in a bubble column reactor
title_fullStr	CFD simulation of the dynamic flow behavior in a bubble column reactor
title_full_unstemmed	CFD simulation of the dynamic flow behavior in a bubble column reactor
title_sort	cfd simulation of the dynamic flow behavior in a bubble column reactor
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Faculty of Mechanical and Manufacturing Engineering
publishDate	2015
url	http://eprints.uthm.edu.my/1483/3/SAZALI%20MD%20HASAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1483/1/24p%20SAZALI%20MD%20HASAN.pdf http://eprints.uthm.edu.my/1483/2/SAZALI%20MD%20HASAN%20WATERMARK.pdf
_version_	1747830800070475776

CFD simulation of the dynamic flow behavior in a bubble column reactor

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