Investigating an extended multiphase flow model that includes specific interfacial area

Ebadi, Mohammad; McClure, James; Mostaghimi, Peyman; Armstrong, Ryan T.

doi:10.1016/j.cma.2023.116594

Computer Methods in Applied Mechanics and Engineering

2024

DOI: 10.1016/j.cma.2023.116594

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Investigating an extended multiphase flow model that includes specific interfacial area

Mohammad Ebadi,

James McClure,

Peyman Mostaghimi

et al.

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2024

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Cited by 2 publications

References 55 publications

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Bridging the gap: Connecting pore-scale and continuum-scale simulations for immiscible multiphase flow in porous media

Ebadi,

McClure,

Mostaghimi

et al. 2024

Physics of Fluids

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This study aims to bridge length scales in immiscible multiphase flow simulation by connecting two published governing equations at the pore-scale and continuum-scale through a novel validation framework. We employ Niessner and Hassnaizadeh's [“A model for two-phase flow in porous media including fluid-fluid interfacial area,” Water Resour. Res. 44(8), W08439 (2008)] continuum-scale model for multiphase flow in porous media, combined with the geometric equation of state of McClure et al. [“Modeling geometric state for fluids in porous media: Evolution of the Euler characteristic,” Transp. Porous Med. 133(2), 229–250 (2020)]. Pore-scale fluid configurations simulated with the lattice-Boltzmann method are used to validate the continuum-scale results. We propose a mapping from the continuum-scale to pore-scale utilizing a generalized additive model to predict non-wetting phase Euler characteristics during imbibition, effectively bridging the continuum-to-pore length scale gap. Continuum-scale simulated measures of specific interfacial area, saturation, and capillary pressure are directly compared to up-scaled pore-scale simulation results. This research develops a numerical framework capable of capturing multiscale flow equations establishing a connection between pore-scale and continuum-scale simulations.

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Bridging the gap: Connecting pore-scale and continuum-scale simulations for immiscible multiphase flow in porous media

Ebadi,

McClure,

Mostaghimi

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

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Stability of two-phase flow with interfacial flux in porous media: CO2 mineralization

Roded,

Dalton

2024

Physics of Fluids

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The primary objective of carbon capture, utilization, and storage (CCUS) applications in various natural and engineered porous materials is to achieve a stable and planar CO2 displacement front, thereby suppressing viscous fingering. A stable front can ensure uniform and exhaustive CO2 mineralization throughout a reactive medium (i.e., mineral carbonation). Drawing inspiration from experimental observations of CO2 flooding into cores of portland cement-based materials, we examine the stability of such systems. Under these conditions, the injected CO2 continuously dissolves into the resident water phase, which becomes chemically disequilibrated with the solid minerals and leads to mineral carbonation on the wetted surfaces. Focusing on the early injection time allows us to reduce the complex multiphysical problem to a simple two-phase flow scenario of immiscible displacement with a CO2 interfacial flux sink. The formulated equations are investigated using numerical simulations and linear stability analysis, which results in a closed-form criterion, and provide fundamental insights into system stability. Overall, the results show that several effects combine to stabilize the system, including the sink effect, which acts to eliminate instability; the reduction in flow velocity along the flow path, which limits flow focusing; and the relative increase in stabilizing capillary forces. Therefore, if the system is stable at early stages, it will likely remain stable later on. Finally, this research demonstrates the use of theory to simplify complex problems and shows that even when flow is inherently coupled, the state of systems can often be determined from fluid stability alone.

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Investigating an extended multiphase flow model that includes specific interfacial area

Cited by 2 publications

References 55 publications

Bridging the gap: Connecting pore-scale and continuum-scale simulations for immiscible multiphase flow in porous media

Bridging the gap: Connecting pore-scale and continuum-scale simulations for immiscible multiphase flow in porous media

Stability of two-phase flow with interfacial flux in porous media: CO2 mineralization

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