Lagrangian modelling of porous media filtration flow

Much research works, which include both experimental and numerical methods, have been carried out in the attempt of garnering a deeper understanding of the hydrodynamics in a granular filter bed, or in systems of porous media (packed beds) mainly. However, it has appeared that the numerical models d...

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Main Author: Chew, Alvin Wei Ze
Other Authors: Law Wing-Keung, Adrian
Format: Final Year Project
Language:English
Published: 2015
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Online Access:http://hdl.handle.net/10356/64150
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-641502023-03-03T17:15:25Z Lagrangian modelling of porous media filtration flow Chew, Alvin Wei Ze Law Wing-Keung, Adrian School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute DHI-NTU Centre DRNTU::Engineering::Environmental engineering::Water treatment Much research works, which include both experimental and numerical methods, have been carried out in the attempt of garnering a deeper understanding of the hydrodynamics in a granular filter bed, or in systems of porous media (packed beds) mainly. However, it has appeared that the numerical models designed, by far, were not emulating the actual granular filter bed effectively due to the employed tube to particle diameter ratio. It was also concurred that there were little or no studies made on the investigations of the impurity particle interactions in the domain of multiple spherical grains, which would be a more exact representation of the impurities’ attachment to the filter grains in the actual bed. As such, there were 2 objectives in this study: (a) to design a robust numerical domain which could emulate the actual filter bed to a good extent, and (b) to attempt to insert a lagrangian particle into the designed numerical model, which comprised of multiple spherical objects, for investigating the particle’s behaviour. For the first objective, there were 4 numerical domains created with the employment of the OpenFOAM CFD software, for which domains 1 and 2 effectively represented an actual granular clean filter bed due to the 5-12% deviation between the simulated and theoretical head loss values. For domains 3 and 4, there were inaccuracies in the simulated head loss values which could be ascribed to the low quality meshes. For the second objective, there was a need to modify the underlying C++ coding in order to hybridize both the icoFoam solver and solidParticleCloud class, which was not achievable within the timeframe of this project.   Bachelor of Engineering (Environmental Engineering) 2015-05-25T03:20:22Z 2015-05-25T03:20:22Z 2015 2015 Final Year Project (FYP) http://hdl.handle.net/10356/64150 en Nanyang Technological University 75 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering::Water treatment
spellingShingle DRNTU::Engineering::Environmental engineering::Water treatment
Chew, Alvin Wei Ze
Lagrangian modelling of porous media filtration flow
description Much research works, which include both experimental and numerical methods, have been carried out in the attempt of garnering a deeper understanding of the hydrodynamics in a granular filter bed, or in systems of porous media (packed beds) mainly. However, it has appeared that the numerical models designed, by far, were not emulating the actual granular filter bed effectively due to the employed tube to particle diameter ratio. It was also concurred that there were little or no studies made on the investigations of the impurity particle interactions in the domain of multiple spherical grains, which would be a more exact representation of the impurities’ attachment to the filter grains in the actual bed. As such, there were 2 objectives in this study: (a) to design a robust numerical domain which could emulate the actual filter bed to a good extent, and (b) to attempt to insert a lagrangian particle into the designed numerical model, which comprised of multiple spherical objects, for investigating the particle’s behaviour. For the first objective, there were 4 numerical domains created with the employment of the OpenFOAM CFD software, for which domains 1 and 2 effectively represented an actual granular clean filter bed due to the 5-12% deviation between the simulated and theoretical head loss values. For domains 3 and 4, there were inaccuracies in the simulated head loss values which could be ascribed to the low quality meshes. For the second objective, there was a need to modify the underlying C++ coding in order to hybridize both the icoFoam solver and solidParticleCloud class, which was not achievable within the timeframe of this project.  
author2 Law Wing-Keung, Adrian
author_facet Law Wing-Keung, Adrian
Chew, Alvin Wei Ze
format Final Year Project
author Chew, Alvin Wei Ze
author_sort Chew, Alvin Wei Ze
title Lagrangian modelling of porous media filtration flow
title_short Lagrangian modelling of porous media filtration flow
title_full Lagrangian modelling of porous media filtration flow
title_fullStr Lagrangian modelling of porous media filtration flow
title_full_unstemmed Lagrangian modelling of porous media filtration flow
title_sort lagrangian modelling of porous media filtration flow
publishDate 2015
url http://hdl.handle.net/10356/64150
_version_ 1759857259818516480