Article
Mechanics
Haidong Shi, Qingyuan Zhu, Zhangxin Chen, Jing Li, Dong Feng, Shengting Zhang, Jiawei Ye, Keliu Wu
Summary: Water-gas flow in heterogeneous porous media was simulated using a direct simulation method and the phase-field method. The study found that forced imbibition showed stable displacement with local capillary fingering. Capillary valve effects acted as both driving and resistance forces during the process. Drainage showed viscous fingering and capillary fingering simultaneously. The water-gas front advanced faster during drainage due to smaller viscous forces. The final phase saturation of imbibition was similar under different capillary numbers, but the area of each type differed. The larger the capillary number, the higher the final displacement efficiency.
Article
Engineering, Geological
Mohamad Chaaban, Yousef Heider, Bernd Markert
Summary: In this paper, a reliable micro-to-macroscale framework is presented to model multiphase fluid flow through fractured porous media. The lattice Boltzmann method (LBM) is utilized within the phase-field modeling (PFM) of fractures to achieve this. New phase-field-dependent relationships for various parameters are proposed and a multiscale concept for coupling is achieved. Numerical simulations on real microgeometries of fractured porous media validate the reliability of the model.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2022)
Article
Physics, Fluids & Plasmas
Dario Maggiolo, Francesco Picano, Federico Toschi
Summary: Through pore-scale numerical simulations, it has been shown that directional-dependent two-phase flow behavior can be achieved in anisotropic porous media with controlled design. The results demonstrate distinct invasion dynamics based on the direction of fluid injection relative to the medium orientation.
Article
Thermodynamics
Xiaofei Zhu, Sen Wang, Qihong Feng, Lei Zhang, Li Chen, Wenquan Tao
Summary: This study employed a lattice Boltzmann model to validate the flow of three immiscible fluids in three-dimensional porous media, and analyzed the effects of wettability, viscosity ratio, and capillary number on relative permeability curves in detail.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Qing He, Shi Tao, Xiaoping Yang, Weijian Lu, Zongrun He
Summary: The study introduces the ghost-cell immersed boundary method into DUGKS to handle curved boundaries. Three typical test cases are simulated to validate the accuracy and feasibility of the new IDW-GC-DUGKS method for gaseous microflows.
Article
Mechanics
Eslam Ezzatneshan, Reza Sadraei
Summary: This study investigates the effects of vibration on droplet dynamics inside a three-dimensional porous medium. The results show that contact angle significantly affects the volume and duration of droplet drainage. Hydrophilic pores hinder droplet drainage and resist vibration, while a hydrophobic surface leads to quicker drainage. The study also finds that increasing the vibration frequency can enhance droplet separation and improve drainage.
Article
Engineering, Geological
Tomohiro Kitao, Yutaka Fukumoto, Kazunori Fujisawa, Arif Jewel, Akira Murakami
Summary: The study investigates the accuracy of pore-scale intergranular flow analysis using the lattice Boltzmann method with the discrete element method, comparing it with experimental results of saturated seepage flows. The results show that the numerical method successfully predicts macroscopic properties obtained in permeability tests, demonstrating the applicability of the LBM-DEM analysis to pore-scale intergranular fluid flows.
Article
Thermodynamics
Gholamreza Imani, Mohsen Mozafari-Shamsi
Summary: This study aims to develop a method to model hydrodynamic compatibility conditions at curved porous-fluid interfaces, and the proposed method is validated through comparisons with conventional numerical methods in the problem of fluid flow through and around a porous cylinder. The results show that applying this method can improve the accuracy of flow predictions.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Computer Science, Interdisciplinary Applications
Reza Haghani-Hassan-Abadi, Abbas Fakhari, Mohammad-Hassan Rahimian
Summary: Based on the Allen-Cahn equation, a phase-field model for liquid-vapor phase change phenomena is proposed, which is validated through numerical simulations and comparison with analytical solutions. The model includes phase-change effects, mass transfer, and interface motion, showing good agreement with empirical correlations in practical applications.
JOURNAL OF COMPUTATIONAL PHYSICS
(2021)
Article
Mathematics, Applied
Yuting Cao, Dongke Sun, Hui Xing, Jincheng Wang
Summary: The density change induced flows have a significant impact on crystal growth, affecting morphological transitions and involving a competition between latent heat release and heat transport.
APPLIED MATHEMATICS LETTERS
(2021)
Article
Thermodynamics
Ammar Tariq, Zhenyu Liu
Summary: The type and quantity of obstacles can affect the friction factor coefficient and permeability under slip flow conditions. These two parameters also change correspondingly with variations in Knudsen number, Reynolds number, and porosity.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Kosuke Suzuki, Takaji Inamuro, Aoi Nakamura, Fuminori Horai, Kuo-Long Pan, Masato Yoshino
Summary: The lattice Boltzmann method (LBM) is a numerical method for incompressible viscous fluid flows that has recently seen more complex collision models to enhance numerical stability. This paper proposes simple extended LBMs with good stability using the lattice kinetic scheme (LKS), which is improved by the linkwise artificial compressibility method (LWACM) to reduce high-order dissipation errors in high Reynolds number flows. The study compares the numerical stability and accuracy of LBM, LKS, LWACM, and improved LKS in simulations of high Reynolds number shear layers and two-phase flows with large density ratios.
Article
Thermodynamics
Zhenhan Diao, Zixing Chen, Haihu Liu, Bei Wei, Jian Hou
Summary: This work develops a hybrid method for pore-scale simulation of superheated vapor displacing liquid in a porous geometry, driven by gravity, using interparticle-potential multiphase LBM, finite difference method, and characteristic-line wetting scheme. The influence of injected vapor superheat, surface wettability, and gravity on the displacement and heat transfer processes is investigated. The results show that the displacement efficiency is significantly improved at low vapor superheat degrees, but it reduces as the vapor superheat degree rises due to the shift of displacement patterns.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Hussein Alihussein, Martin Geier, Manfred Krafczyk
Summary: This paper presents a framework for modeling and simulating physical/chemical processes in porous materials, with a focus on improving lattice Boltzmann methods for predicting mass transport and reaction in porous media.
Article
Thermodynamics
Yutao Huo, Maobin Yin, Zhonghao Rao
Summary: The study demonstrates that high-thermal-conductivity porous medium can significantly improve heat transfer efficiency and reduce heat accumulation for phase change heat transfer in thermal energy storage systems. Additionally, the angle, porosity, and Rayleigh number of the porous medium have significant effects on heat transfer performance during melting and solidification processes.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Computer Science, Interdisciplinary Applications
James E. McClure, Zhe Li, Mark Berrill, Thomas Ramstad
Summary: The direct pore scale simulations of two-fluid flow on digital rock images provide a valuable tool for understanding the impact of surface wetting phenomena on flow behavior in geological reservoirs. By mimicking conventional special core analysis laboratory experiments, computational protocols were developed to simulate displacement, steady-state flow, and centrifuge experiments, enabling the inference of relative permeability and capillary curves. Morphological tools and internal analysis tools were utilized to assess image resolution and track transient aspects of flow behavior during simulation.
COMPUTATIONAL GEOSCIENCES
(2021)
Article
Mechanics
James E. McClure, Steffen Berg, Ryan T. Armstrong
Summary: This study addresses the challenges of two-fluid flow in porous media by deriving a time-and-space averaging theory, resolving issues related to film thermodynamics, geometric constraints, and proposing a new constitutive model for capillary pressure dynamics. Additionally, the importance of capillary energy barriers in transient behaviors of interfaces and films is highlighted through the analysis of multi-scale fluctuation terms.
Article
Chemistry, Physical
Chenhao Sun, James McClure, Steffen Berg, Peyman Mostaghimi, Ryan T. Armstrong
Summary: This article proposes a universal description of wetting on multiscale surfaces through the combination of integral geometry and thermodynamic laws. The theoretical framework is presented and applied to different limiting cases. Simulations of fluid droplets on structurally rough and chemically heterogeneous surfaces are conducted to explore the wetting behavior. The findings reveal the origin of classical wetting models within the proposed framework.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Physics, Fluids & Plasmas
Christopher A. Bowers, Cass T. Miller
Summary: Traditional macroscopic modeling approaches for single-fluid-phase flow involving generalized Newtonian fluids often require fitting experimental parameters, introducing effective parameters unrelated to known microscale physics, and leading to uncertainty regarding the dependence of empirical parameters on system properties. In contrast, the thermodynamically constrained averaging theory (TCAT) provides a macroscopic modeling approach consistent with microscale conservation principles and the second law of thermodynamics.
PHYSICAL REVIEW FLUIDS
(2021)
Article
Water Resources
Ruichang Guo, Laura Dalton, Dustin Crandall, James McClure, Hongsheng Wang, Zhe Li, Cheng Chen
Summary: This study investigates the impact of pore-scale wettability heterogeneity on immiscible two-fluid displacement in porous media. The results show that heterogeneous wettability causes local redistribution of CO2 and water and has a more significant effect on relative permeability curves than on capillary pressure-water saturation curves.
ADVANCES IN WATER RESOURCES
(2022)
Article
Mechanics
James E. McClure, Ming Fan, Steffen Berg, Ryan T. T. Armstrong, Carl Fredrik Berg, Zhe Li, Thomas Ramstad
Summary: Relative permeability is derived from conservation of energy and used to model fluid flow through porous materials. The study finds dynamic connectivity and explores the distribution of energy fluctuations during steady-state flow. It demonstrates the effectiveness of the conventional relative permeability relationship in simulating energy dissipation in systems with complex pore-scale dynamics.
Review
Environmental Sciences
Hannah R. Peel, Fatai O. Balogun, Christopher A. Bowers, Cass T. Miller, Chelsea S. Obeidy, Matthew L. Polizzotto, Sadeya U. Tashnia, David S. Vinson, Owen W. Duckworth
Summary: This article examines the geochemical and hydrological information about the release and transport of potentially hazardous geogenic contaminants and the challenges in understanding their behavior in the subsurface. The development and utilization of geochemical models are explored, and the gaps in knowledge in translating subsurface conditions into numerical models are described, along with an outlook on future research needs and developments.
Article
Water Resources
Catherine Spurin, Ryan T. Armstrong, James McClure, Steffen Berg
Summary: For multi-phase flow through multi-scale heterogeneous porous media, the interaction between multiple immiscible fluids and an intricate network of pores creates a wide range of dynamic flow phenomena. Dynamic Mode Decomposition (DMD) is proven to be a useful diagnostic tool for complex 4D flow dynamics, as it can reproduce saturation data and identify important spatial and temporal scales for flow.
ADVANCES IN WATER RESOURCES
(2023)
Article
Multidisciplinary Sciences
Ying Da Wang, Quentin Meyer, Kunning Tang, James E. McClure, Robin T. White, Stephen T. Kelly, Matthew M. Crawford, Francesco Iacoviello, Dan J. L. Brett, Paul R. Shearing, Peyman Mostaghimi, Chuan Zhao, Ryan T. Armstrong
Summary: The authors utilize X-ray micro-computed tomography, deep learned super-resolution, multi-label segmentation, and direct multiphase simulation to simulate fuel cells and guide their design, addressing the challenge of accurate liquid water modelling.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Fluids & Plasmas
Fatimah Al-Zubaidi, Peyman Mostaghimi, Yufu Niu, Ryan T. Armstrong, Gelareh Mohammadi, James E. McClure, Steffen Berg
Summary: Based on Darcy's law, the two-fluid flow is influenced by a relative permeability function of saturation, which is process or path dependent and has a dependency on pore structure and wettability. Determining the effective phase permeability relationships is crucial for various applications, but the traditional approach relies on time-consuming experiments for inverse modeling. This is due to the unsolved upscaling step from pore to Darcy scale, which connects the pore structure to hydraulic conductivities. In this study, an artificial neural network (ANN) based on geometric relationships is developed to predict the mechanical energy dissipation during creeping immiscible two-fluid flow, achieving an R2 value of 0.98 for 4500 unseen pore-scale geometrical states.
PHYSICAL REVIEW FLUIDS
(2023)
Article
Humanities, Multidisciplinary
Cass T. Miller, Rebecca L. Rice
Summary: The authors assess the current status of scholarly publishing and conclude that it is both in flux and unsustainable. They propose a new model for academic publishing based on the scholarly community alliance, where academics take on the responsibilities of peer review, article production, and knowledge dissemination. Challenges and potential solutions to implementing this model are explored, and initial efforts to build support for the proposed model are reported.
JOURNAL OF SCHOLARLY PUBLISHING
(2023)
Article
Mechanics
Reza Haghani, Hamidreza Erfani, James E. McClure, Carl Fredrik Berg
Summary: In this paper, the accuracy and computational cost of phase-field interface capturing equations for two-fluid systems are investigated. Two different schemes are compared, and it is found that the first scheme is faster but results in asymmetry and nonphysical interfaces. The two schemes yield equal results only in a domain with zero velocity. Theoretical analysis is conducted to highlight the differences between the two approaches.
Article
Physics, Fluids & Plasmas
James E. McClure, Zhe Li
Summary: We develop a mesoscopic approach to model the nonequilibrium behavior of membranes at the cellular scale. Relying on lattice Boltzmann methods, we develop a solution procedure to recover the Nernst-Planck equations and Gauss's law. Our general closure rule is able to account for protein-mediated diffusion based on a coarse-grained representation. We demonstrate that our model is capable of recovering the Goldman equation and explaining hyperpolarization due to multiple relaxation timescales in membrane charging dynamics. The approach offers a promising way to characterize non-equilibrium behaviors in realistic three-dimensional cell geometries that involve membrane-mediated transport.
Article
Engineering, Multidisciplinary
Mohammad Ebadi, James Mcclure, Peyman Mostaghimi, Ryan T. Armstrong Australia
Summary: In this study, an extended model for multiphase flow in porous media based on first principles is proposed. The advantages of the extended model, including real-time tracking of specific interfacial area, are demonstrated through comparisons with traditional models and analytical solutions. Sensitivity and stability analyses reveal the importance of the balance between permeability of the porous media and interfacial permeability. The extended model offers a better understanding of the evolution of specific interfacial area during multiphase flow.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Physics, Fluids & Plasmas
James E. McClure, Steffen Berg, Ryan T. Armstrong
Summary: The study introduces a non-equilibrium theory using time and space averages to upscale thermodynamics in non-ergodic systems, showing a scale-dependent rate of entropy production. It explores energy dynamics in fluctuating systems, stationery processes, and non-stationary processes, shedding light on anomalous diffusion phenomena and fluctuations in capillary-dominated systems.
