Pore-scale investigation on reactive flow in porous media considering dissolution and precipitation by LBM

2021 ◽  
pp. 108712
Author(s):  
M. Jiang ◽  
Z.G. Xu ◽  
Z.P. Zhou
Keyword(s):  
Porous Media ◽  
Flow In Porous Media ◽  
Reactive Flow ◽  
Pore Scale ◽  
Dissolution And Precipitation

scholarly journals Direct Numerical Simulation of Pore-Scale Trapping Events During Capillary-Dominated Two-Phase Flow in Porous Media

2021 ◽  
Author(s):  
Mosayeb Shams ◽  
Kamaljit Singh ◽  
Branko Bijeljic ◽  
Martin J. Blunt
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Direct Numerical Simulation ◽  
Complex Geometry ◽  
Flow In Porous Media ◽  
Pore Scale ◽  
Contact Lines ◽  
Two Phase ◽  
X Ray ◽  
Aspect Ratios

AbstractThis study focuses on direct numerical simulation of imbibition, displacement of the non-wetting phase by the wetting phase, through water-wet carbonate rocks. We simulate multiphase flow in a limestone and compare our results with high-resolution synchrotron X-ray images of displacement previously published in the literature by Singh et al. (Sci Rep 7:5192, 2017). We use the results to interpret the observed displacement events that cannot be described using conventional metrics such as pore-to-throat aspect ratio. We show that the complex geometry of porous media can dictate a curvature balance that prevents snap-off from happening in spite of favourable large aspect ratios. We also show that pinned fluid-fluid-solid contact lines can lead to snap-off of small ganglia on pore walls; we propose that this pinning is caused by sub-resolution roughness on scales of less than a micron. Our numerical results show that even in water-wet porous media, we need to allow pinned contacts in place to reproduce experimental results.

scholarly journals Multi-stage preconditioners for thermal–compositional–reactive flow in porous media

2020 ◽  
Vol 418 ◽  
pp. 109607
Author(s):  
Matthias A. Cremon ◽  
Nicola Castelletto ◽  
Joshua A. White
Keyword(s):  
Porous Media ◽  
Flow In Porous Media ◽  
Reactive Flow ◽  
Multi Stage

scholarly journals Pore-scale displacement mechanisms as a source of hysteresis for two-phase flow in porous media

2016 ◽  
Vol 52 (3) ◽  
pp. 2194-2205 ◽  
Author(s):  
S. Schlüter ◽  
S. Berg ◽  
M. Rücker ◽  
R. T. Armstrong ◽  
H.-J. Vogel ◽  
...  
Keyword(s):  
Porous Media ◽  
Two Phase Flow ◽  
Flow In Porous Media ◽  
Phase Flow ◽  
Pore Scale ◽  
Two Phase

scholarly journals Comprehensive comparison of pore-scale models for multiphase flow in porous media

2019 ◽  
Vol 116 (28) ◽  
pp. 13799-13806 ◽  
Author(s):  
Benzhong Zhao ◽  
Christopher W. MacMinn ◽  
Bauyrzhan K. Primkulov ◽  
Yu Chen ◽  
Albert J. Valocchi ◽  
...  
Keyword(s):  
Porous Media ◽  
Multiphase Flows ◽  
Rapid Development ◽  
Network Models ◽  
Industrial Applications ◽  
Flow In Porous Media ◽  
Pore Scale ◽  
Displacement Efficiency ◽  
Scale Models ◽  
Comprehensive Comparison

Multiphase flows in porous media are important in many natural and industrial processes. Pore-scale models for multiphase flows have seen rapid development in recent years and are becoming increasingly useful as predictive tools in both academic and industrial applications. However, quantitative comparisons between different pore-scale models, and between these models and experimental data, are lacking. Here, we perform an objective comparison of a variety of state-of-the-art pore-scale models, including lattice Boltzmann, stochastic rotation dynamics, volume-of-fluid, level-set, phase-field, and pore-network models. As the basis for this comparison, we use a dataset from recent microfluidic experiments with precisely controlled pore geometry and wettability conditions, which offers an unprecedented benchmarking opportunity. We compare the results of the 14 participating teams both qualitatively and quantitatively using several standard metrics, such as fractal dimension, finger width, and displacement efficiency. We find that no single method excels across all conditions and that thin films and corner flow present substantial modeling and computational challenges.

A Predictive Pore-Scale Model for Non-Darcy Flow in Porous Media

SPE Journal ◽  
2009 ◽  
Vol 14 (04) ◽  
pp. 579-587 ◽  
Author(s):  
Matthew T. Balhoff ◽  
Mary F. Wheeler
Keyword(s):  
Porous Media ◽  
Darcy Flow ◽  
Flow In Porous Media ◽  
Scale Model ◽  
Pore Scale ◽  
Pore Scale Model

scholarly journals Wettability control on multiphase flow in patterned microfluidics

2016 ◽  
Vol 113 (37) ◽  
pp. 10251-10256 ◽  
Author(s):  
Benzhong Zhao ◽  
Christopher W. MacMinn ◽  
Ruben Juanes
Keyword(s):  
Porous Media ◽  
Multiphase Flow ◽  
Contact Angles ◽  
Flow In Porous Media ◽  
Wetting Transition ◽  
Pore Scale ◽  
Displacement Efficiency ◽  
Pore Filling ◽  
Wide Range ◽  
The Impact

Multiphase flow in porous media is important in many natural and industrial processes, including geologic CO2 sequestration, enhanced oil recovery, and water infiltration into soil. Although it is well known that the wetting properties of porous media can vary drastically depending on the type of media and pore fluids, the effect of wettability on multiphase flow continues to challenge our microscopic and macroscopic descriptions. Here, we study the impact of wettability on viscously unfavorable fluid–fluid displacement in disordered media by means of high-resolution imaging in microfluidic flow cells patterned with vertical posts. By systematically varying the wettability of the flow cell over a wide range of contact angles, we find that increasing the substrate’s affinity to the invading fluid results in more efficient displacement of the defending fluid up to a critical wetting transition, beyond which the trend is reversed. We identify the pore-scale mechanisms—cooperative pore filling (increasing displacement efficiency) and corner flow (decreasing displacement efficiency)—responsible for this macroscale behavior, and show that they rely on the inherent 3D nature of interfacial flows, even in quasi-2D media. Our results demonstrate the powerful control of wettability on multiphase flow in porous media, and show that the markedly different invasion protocols that emerge—from pore filling to postbridging—are determined by physical mechanisms that are missing from current pore-scale and continuum-scale descriptions.

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