Experimental evaluation of fluid connectivity in two-phase flow in porous media

Samaneh Vahid Dastjerdi; Nikolaos Karadimitriou; S. Majid Hassanizadeh; Holger Steeb

doi:10.1016/j.advwatres.2023.104378

Experimental evaluation of fluid connectivity in two-phase flow in porous media

Samaneh Vahid Dastjerdi^*
, Nikolaos Karadimitriou
, S. Majid Hassanizadeh
, Holger Steeb

^*Corresponding author for this work

University of Stuttgart

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

In this work, we provide a physically-consistent modeling approach for two-phase porous media flow, by including percolating interfacial area and saturation as state variables. For this purpose, we combine two continuum theories for two-phase flow which have been individually proven to be conditionally valid. This means the potential use of the connected-to-the-flow interfacial area as a state variable is tested utilizing time-resolved microfluidic experiments, for various flux boundary conditions. Moreover, we observe and study a linear relation between the percolating saturation and interfacial area, which is persistent for the tested boundary conditions. In our microfluidic experiments, we employ optical microscopy to perform cyclic immiscible displacement experiments. Our results show that a continuum model, where capillary pressure, saturation, and specific interfacial area of the clusters connected to the flow are considered, is closer to a universal description of two-phase flow than the common approaches, where the only state variable is saturation.

Original language	English
Article number	104378
Number of pages	9
Journal	Advances in Water Resources
Volume	172
DOIs	https://doi.org/10.1016/j.advwatres.2023.104378
Publication status	Published - Feb 2023

Bibliographical note

Funding Information:
This work is funded by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2075 – 390740016 . We acknowledge the support by the Stuttgart Center for Simulation Science (SimTech) . HS and NK would like to thank the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for supporting this work by funding SFB 1313, Project Number 327154368 .

Publisher Copyright:
© 2023 Elsevier Ltd

Funding

This work is funded by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2075 – 390740016 . We acknowledge the support by the Stuttgart Center for Simulation Science (SimTech) . HS and NK would like to thank the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for supporting this work by funding SFB 1313, Project Number 327154368 .

Funders	Funder number
Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy	EXC 2075 - 390740016
Stuttgart Center for Simulation Science (SimTech)
Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)	SFB 1313, 327154368

Keywords

Image processing
Interfacial area
Microfluidic experiments
Optical microscopy
Phase percolation
Two-phase flow

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10.1016/j.advwatres.2023.104378

1-s2.0-S0309170823000131-mainFinal published version, 2.8 MBLicence: Taverne

Cite this

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title = "Experimental evaluation of fluid connectivity in two-phase flow in porous media",

abstract = "In this work, we provide a physically-consistent modeling approach for two-phase porous media flow, by including percolating interfacial area and saturation as state variables. For this purpose, we combine two continuum theories for two-phase flow which have been individually proven to be conditionally valid. This means the potential use of the connected-to-the-flow interfacial area as a state variable is tested utilizing time-resolved microfluidic experiments, for various flux boundary conditions. Moreover, we observe and study a linear relation between the percolating saturation and interfacial area, which is persistent for the tested boundary conditions. In our microfluidic experiments, we employ optical microscopy to perform cyclic immiscible displacement experiments. Our results show that a continuum model, where capillary pressure, saturation, and specific interfacial area of the clusters connected to the flow are considered, is closer to a universal description of two-phase flow than the common approaches, where the only state variable is saturation.",

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note = "Funding Information: This work is funded by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany{\textquoteright}s Excellence Strategy - EXC 2075 – 390740016 . We acknowledge the support by the Stuttgart Center for Simulation Science (SimTech) . HS and NK would like to thank the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for supporting this work by funding SFB 1313, Project Number 327154368 . Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

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doi = "10.1016/j.advwatres.2023.104378",

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AU - Vahid Dastjerdi, Samaneh

AU - Karadimitriou, Nikolaos

AU - Hassanizadeh, S. Majid

AU - Steeb, Holger

N1 - Funding Information: This work is funded by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2075 – 390740016 . We acknowledge the support by the Stuttgart Center for Simulation Science (SimTech) . HS and NK would like to thank the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for supporting this work by funding SFB 1313, Project Number 327154368 . Publisher Copyright: © 2023 Elsevier Ltd

PY - 2023/2

Y1 - 2023/2

N2 - In this work, we provide a physically-consistent modeling approach for two-phase porous media flow, by including percolating interfacial area and saturation as state variables. For this purpose, we combine two continuum theories for two-phase flow which have been individually proven to be conditionally valid. This means the potential use of the connected-to-the-flow interfacial area as a state variable is tested utilizing time-resolved microfluidic experiments, for various flux boundary conditions. Moreover, we observe and study a linear relation between the percolating saturation and interfacial area, which is persistent for the tested boundary conditions. In our microfluidic experiments, we employ optical microscopy to perform cyclic immiscible displacement experiments. Our results show that a continuum model, where capillary pressure, saturation, and specific interfacial area of the clusters connected to the flow are considered, is closer to a universal description of two-phase flow than the common approaches, where the only state variable is saturation.

AB - In this work, we provide a physically-consistent modeling approach for two-phase porous media flow, by including percolating interfacial area and saturation as state variables. For this purpose, we combine two continuum theories for two-phase flow which have been individually proven to be conditionally valid. This means the potential use of the connected-to-the-flow interfacial area as a state variable is tested utilizing time-resolved microfluidic experiments, for various flux boundary conditions. Moreover, we observe and study a linear relation between the percolating saturation and interfacial area, which is persistent for the tested boundary conditions. In our microfluidic experiments, we employ optical microscopy to perform cyclic immiscible displacement experiments. Our results show that a continuum model, where capillary pressure, saturation, and specific interfacial area of the clusters connected to the flow are considered, is closer to a universal description of two-phase flow than the common approaches, where the only state variable is saturation.

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KW - Interfacial area

KW - Microfluidic experiments

KW - Optical microscopy

KW - Phase percolation

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DO - 10.1016/j.advwatres.2023.104378

M3 - Article

AN - SCOPUS:85147090456

SN - 0309-1708

VL - 172

JO - Advances in Water Resources

JF - Advances in Water Resources

M1 - 104378

ER -

Experimental evaluation of fluid connectivity in two-phase flow in porous media

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Keywords

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