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Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim

Void fraction is an important process variable for the volume and mass computation required for transportation of gas-liquid mixture in pipelines, storage in tanks, metering etc. Inaccurate measurement would introduce errors in product measurement with potentials for loss of revenue. Accurate measur...

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Main Author: Nur Afiqah Adilah , Muhamad Khosim
Format: Thesis
Published: 2019
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://studentsrepo.um.edu.my/11348/1/Nurul_Afiqah_Adilah.jpg
http://studentsrepo.um.edu.my/11348/8/afiqah.pdf
http://studentsrepo.um.edu.my/11348/
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spelling my.um.stud.113482020-07-08T19:05:48Z Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim Nur Afiqah Adilah , Muhamad Khosim TJ Mechanical engineering and machinery Void fraction is an important process variable for the volume and mass computation required for transportation of gas-liquid mixture in pipelines, storage in tanks, metering etc. Inaccurate measurement would introduce errors in product measurement with potentials for loss of revenue. Accurate measurement is often constrained by invasive and expensive online measurement techniques. This work focuses on the use of Constant Electric Current Method (CECM) using specially developed sensor to measure void fraction in a vertically arranged gas-liquid two-phase flow channel. The effects of velocities of both phases were examined with variety of combinations using an industrial scale two-phase flow loop. The results show that at a constant rate of liquid superficial velocities, the void fraction increases with the increasing gas superficial velocities and at a higher velocity of liquid phase, the value of void fraction becoming lower. Besides, at lower liquid superficial velocity, the void fraction at the upper side of flow channel is higher than the lower position. However, when the liquid phase dominates the flow channel at higher liquid superficial velocity, and when the gas superficial velocity is further increased, the flow become chaotic and a rough turbulent condition has developed, and therefore void fraction can be seen fluctuating up and down at the higher position. 2019 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/11348/1/Nurul_Afiqah_Adilah.jpg application/pdf http://studentsrepo.um.edu.my/11348/8/afiqah.pdf Nur Afiqah Adilah , Muhamad Khosim (2019) Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/11348/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Nur Afiqah Adilah , Muhamad Khosim
Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim
description Void fraction is an important process variable for the volume and mass computation required for transportation of gas-liquid mixture in pipelines, storage in tanks, metering etc. Inaccurate measurement would introduce errors in product measurement with potentials for loss of revenue. Accurate measurement is often constrained by invasive and expensive online measurement techniques. This work focuses on the use of Constant Electric Current Method (CECM) using specially developed sensor to measure void fraction in a vertically arranged gas-liquid two-phase flow channel. The effects of velocities of both phases were examined with variety of combinations using an industrial scale two-phase flow loop. The results show that at a constant rate of liquid superficial velocities, the void fraction increases with the increasing gas superficial velocities and at a higher velocity of liquid phase, the value of void fraction becoming lower. Besides, at lower liquid superficial velocity, the void fraction at the upper side of flow channel is higher than the lower position. However, when the liquid phase dominates the flow channel at higher liquid superficial velocity, and when the gas superficial velocity is further increased, the flow become chaotic and a rough turbulent condition has developed, and therefore void fraction can be seen fluctuating up and down at the higher position.
format Thesis
author Nur Afiqah Adilah , Muhamad Khosim
author_facet Nur Afiqah Adilah , Muhamad Khosim
author_sort Nur Afiqah Adilah , Muhamad Khosim
title Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim
title_short Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim
title_full Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim
title_fullStr Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim
title_full_unstemmed Investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / Nur Afiqah Adilah Muhamad Khosim
title_sort investigation of the void fraction of gas-liquid two phase flow in vertically-upward channel / nur afiqah adilah muhamad khosim
publishDate 2019
url http://studentsrepo.um.edu.my/11348/1/Nurul_Afiqah_Adilah.jpg
http://studentsrepo.um.edu.my/11348/8/afiqah.pdf
http://studentsrepo.um.edu.my/11348/
_version_ 1738506472567865344
score 13.211869

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