Simulating anomalous dispersion in porous media using the unstructured lattice Boltzmann method

Marek Krzysztof Misztal; Anier Hernandez Garcia; Rastin Matin; Dirk Müter; Diwaker Jha; Henning Osholm Sørensen; Joachim Mathiesen

doi:10.3389/fphy.2015.00050

Simulating anomalous dispersion in porous media using the unstructured lattice Boltzmann method

Marek Krzysztof Misztal, Anier Hernandez Garcia, Rastin Matin, Dirk Müter, Diwaker Jha, Henning Osholm Sørensen, Joachim Mathiesen

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Abstract

Flow in porous media is a significant challenge to many computational fluid dynamics methods because of the complex boundaries separating pore fluid and host medium. However, the rapid development of the lattice Boltzmann methods and experimental imaging techniques now allow us to efficiently and robustly simulate flows in the pore space of porous rocks. Here we study the flow and dispersion in the pore space of limestone samples using the unstructured, characteristic based off-lattice Boltzmann method. We use the method to investigate the anomalous dispersion of particles in the pore space. We further show that the complex pore network limits the effectivity by which pollutants in the pore space can be removed by continuous flushing. In the smallest pores, diffusive transport dominates over advective transport and therefore cycles of flushing and no flushing, respectively, might be a more efficient strategy for pollutant removal.

Originalsprog	Engelsk
Artikelnummer	50
Tidsskrift	Frontiers in Physics
Vol/bind	3
Antal sider	9
ISSN	2296-424X
DOI	https://doi.org/10.3389/fphy.2015.00050
Status	Udgivet - 8 jul. 2015

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10.3389/fphy.2015.00050Licens: CC BY

Misztal_2015_Simulating_anomalous_dispersionForlagets udgivne version, 1,29 MBLicens: CC BY

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abstract = "Flow in porous media is a significant challenge to many computational fluid dynamics methods because of the complex boundaries separating pore fluid and host medium. However, the rapid development of the lattice Boltzmann methods and experimental imaging techniques now allow us to efficiently and robustly simulate flows in the pore space of porous rocks. Here we study the flow and dispersion in the pore space of limestone samples using the unstructured, characteristic based off-lattice Boltzmann method. We use the method to investigate the anomalous dispersion of particles in the pore space. We further show that the complex pore network limits the effectivity by which pollutants in the pore space can be removed by continuous flushing. In the smallest pores, diffusive transport dominates over advective transport and therefore cycles of flushing and no flushing, respectively, might be a more efficient strategy for pollutant removal.",

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AU - Misztal, Marek Krzysztof

AU - Hernandez Garcia, Anier

AU - Matin, Rastin

AU - Müter, Dirk

AU - Jha, Diwaker

AU - Sørensen, Henning Osholm

AU - Mathiesen, Joachim

PY - 2015/7/8

Y1 - 2015/7/8

N2 - Flow in porous media is a significant challenge to many computational fluid dynamics methods because of the complex boundaries separating pore fluid and host medium. However, the rapid development of the lattice Boltzmann methods and experimental imaging techniques now allow us to efficiently and robustly simulate flows in the pore space of porous rocks. Here we study the flow and dispersion in the pore space of limestone samples using the unstructured, characteristic based off-lattice Boltzmann method. We use the method to investigate the anomalous dispersion of particles in the pore space. We further show that the complex pore network limits the effectivity by which pollutants in the pore space can be removed by continuous flushing. In the smallest pores, diffusive transport dominates over advective transport and therefore cycles of flushing and no flushing, respectively, might be a more efficient strategy for pollutant removal.

AB - Flow in porous media is a significant challenge to many computational fluid dynamics methods because of the complex boundaries separating pore fluid and host medium. However, the rapid development of the lattice Boltzmann methods and experimental imaging techniques now allow us to efficiently and robustly simulate flows in the pore space of porous rocks. Here we study the flow and dispersion in the pore space of limestone samples using the unstructured, characteristic based off-lattice Boltzmann method. We use the method to investigate the anomalous dispersion of particles in the pore space. We further show that the complex pore network limits the effectivity by which pollutants in the pore space can be removed by continuous flushing. In the smallest pores, diffusive transport dominates over advective transport and therefore cycles of flushing and no flushing, respectively, might be a more efficient strategy for pollutant removal.

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DO - 10.3389/fphy.2015.00050

M3 - Journal article

SN - 2296-424X

VL - 3

JO - Frontiers in Physics

JF - Frontiers in Physics

M1 - 50

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Simulating anomalous dispersion in porous media using the unstructured lattice Boltzmann method

Abstract

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