Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling
Continuum-scale models for two-phase flow and transport in porous media are based on the empirical constitutive relations that highly depend on the porous medium heterogeneity at multiple scales including the microscale pore-size correlation length. The pore-size correlation length determines the re...
Saved in:
Main Authors: | , , , , |
---|---|
Format: | Article |
Published: |
American Geophysical Union
2020
|
Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/91625/ http://dx.doi.org/10.1029/2020WR027403 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.91625 |
---|---|
record_format |
eprints |
spelling |
my.utm.916252021-07-14T08:18:48Z http://eprints.utm.my/id/eprint/91625/ Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling An, Senyou Hasan, Sharul Erfani, Hamidreza Babaei, Masoud Niasar, Vahid TP Chemical technology Continuum-scale models for two-phase flow and transport in porous media are based on the empirical constitutive relations that highly depend on the porous medium heterogeneity at multiple scales including the microscale pore-size correlation length. The pore-size correlation length determines the representative elementary volume and controls the immiscible two-phase invasion pattern and fluids occupancy. The fluids occupancy controls not only the shape of relative permeability curves but also the transport zonation under two-phase flow conditions, which results in the non-Fickian transport. This study aims to quantify the signature of the pore-size correlation length on two-phase flow and solute transport properties such as the capillary pressure- and relative permeability-saturation, dispersivity, stagnant saturation, and mass transfer rate. Given the capability of pore-scale models in capturing the pore morphology and detailed physics of flow and transport, a novel graphics processing unit (GPU)-based pore-network model has been developed. This GPU-based model allows us to simulate flow and transport in networks with multimillions pores, equivalent to the centimeter length scale. The impact of the pore-size correlation length on all aforementioned properties was studied and quantified. Moreover, by classification of the pore space to flowing and stagnant regions, a simple semianalytical relation for the mass transfer between the flowing and stagnant regions was derived, which showed a very good agreement with pore-network simulation results. Results indicate that the characterization of the topology of the stagnant regions as a function of pore-size correlation length is essential for a better estimation of the two-phase flow and solute transport properties. American Geophysical Union 2020 Article PeerReviewed An, Senyou and Hasan, Sharul and Erfani, Hamidreza and Babaei, Masoud and Niasar, Vahid (2020) Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling. Water Resources Research, 56 (8). pp. 1-17. ISSN 0043-1397 http://dx.doi.org/10.1029/2020WR027403 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
topic |
TP Chemical technology |
spellingShingle |
TP Chemical technology An, Senyou Hasan, Sharul Erfani, Hamidreza Babaei, Masoud Niasar, Vahid Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling |
description |
Continuum-scale models for two-phase flow and transport in porous media are based on the empirical constitutive relations that highly depend on the porous medium heterogeneity at multiple scales including the microscale pore-size correlation length. The pore-size correlation length determines the representative elementary volume and controls the immiscible two-phase invasion pattern and fluids occupancy. The fluids occupancy controls not only the shape of relative permeability curves but also the transport zonation under two-phase flow conditions, which results in the non-Fickian transport. This study aims to quantify the signature of the pore-size correlation length on two-phase flow and solute transport properties such as the capillary pressure- and relative permeability-saturation, dispersivity, stagnant saturation, and mass transfer rate. Given the capability of pore-scale models in capturing the pore morphology and detailed physics of flow and transport, a novel graphics processing unit (GPU)-based pore-network model has been developed. This GPU-based model allows us to simulate flow and transport in networks with multimillions pores, equivalent to the centimeter length scale. The impact of the pore-size correlation length on all aforementioned properties was studied and quantified. Moreover, by classification of the pore space to flowing and stagnant regions, a simple semianalytical relation for the mass transfer between the flowing and stagnant regions was derived, which showed a very good agreement with pore-network simulation results. Results indicate that the characterization of the topology of the stagnant regions as a function of pore-size correlation length is essential for a better estimation of the two-phase flow and solute transport properties. |
format |
Article |
author |
An, Senyou Hasan, Sharul Erfani, Hamidreza Babaei, Masoud Niasar, Vahid |
author_facet |
An, Senyou Hasan, Sharul Erfani, Hamidreza Babaei, Masoud Niasar, Vahid |
author_sort |
An, Senyou |
title |
Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling |
title_short |
Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling |
title_full |
Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling |
title_fullStr |
Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling |
title_full_unstemmed |
Unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: GPU-based pore-network modeling |
title_sort |
unravelling effects of the pore-size correlation length on the two-phase flow and solute transport properties: gpu-based pore-network modeling |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
http://eprints.utm.my/id/eprint/91625/ http://dx.doi.org/10.1029/2020WR027403 |
_version_ |
1706956973093683200 |
score |
13.18916 |