Article
Energy & Fuels
Xue-Yi Zhang, Zhi Dou, Jin-Guo Wang, Zhi-Fang Zhou, Chao Zhuang
Summary: Compared to single layer porous media, fluid flow through layered porous media with contrasting pore space structures is more complex. This study constructed three-dimensional pore-scale layered porous media and analyzed the influence of interfaces on non-Darcy flow behavior. The results indicate that existing correlations based on single layer porous media fail to accurately predict the flow behavior of layered porous media.
Article
Computer Science, Information Systems
Sameh E. Ahmed, Dalal Alrowaili, Ehab Mahmoud Mohamed, Abdelraheem M. Aly
Summary: This study investigates the heat transfer of fluids in a sinusoidal heating inclined enclosure under the non-linear Boussinesq approximation. The results show that parameters such as the non-linear Boussinesq parameter, phase deviation, and inclination angle have significant effects on flow speed and heat transfer rate.
CMC-COMPUTERS MATERIALS & CONTINUA
(2021)
Article
Physics, Multidisciplinary
T. N. Sakshath, C. Hemanth Kumar
Summary: An analytic study conducted on Darcy-Benard convection in a Newtonian liquid-saturated porous medium, with the presence of pressure gradient and heat source, using the local thermal non-equilibrium model (LTNE). The LTNE assumption accelerates the onset of convection and enhances heat transport. The increase in the porosity-modified ratio of thermal conductivity and heat source promotes the onset of convection and increases heat transport, while the remaining parameters show an opposite trend. The LTNE effect ceases at a certain point, and the Darcy-Benard convection results using the LTE model are obtained as a limiting case.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Energy & Fuels
Abadelhalim Elsanoose, Ekhwaiter Abobaker, Faisal Khan, Mohammad Azizur Rahman, Amer Aborig, Stephen D. Butt
Summary: This study conducted a radial flow experiment to investigate the existence of non-Darcy flow and calculate the non-Darcy inertia coefficient. The experiments were performed on seven cylindrical perforated artificial porous media samples, and it was found that the non-Darcy flow exists even at very low flow rates. Additionally, the study revealed that the non-Darcy effect is not only caused by turbulence but also by inertial effects.
Article
Thermodynamics
Tahar Tayebi
Summary: This paper investigates the influence of local thermal non-equilibrium (LTNE) effects on heat exchange and entropy generation during thermal-free convection in a non-Darcy porous domain. The study focuses on a square cavity configuration and uses the finite volume computational approach to solve the governing equations. The analysis reveals the sources of entropy generation due to thermal diffusion and viscous dissipation, and introduces a new parameter to evaluate the thermal diffusion irreversibility in the fluid and solid phases.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Multidisciplinary Sciences
Shahul Hameed, Sandip Saha
Summary: This study numerically investigates the boundary layer flow phenomena over a convectively heated linear stretching sheet in the presence of a magnetic field. By transforming the governing partial differential equations into ordinary differential equations using a similarity transformation, the effects of several parameters on the thermal and concentration boundary layers are explored. It is found that the heat transfer in the boundary layer increases as the thermophoresis parameter enhances and the concentration profiles become steeper and thinner as the Lewis number rises.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2023)
Article
Mathematics, Applied
Yang Zhou, Li-ying Zhang, Tao Wang
Summary: The investigation of one-dimensional non-Darcy flow in a porous medium caused by a line source led to the consideration of a bilinear relation between fluid velocity and pressure gradient. An analytical solution with an unknown coefficient was established based on the governing equation's general solution. A numerical solution using the finite volume method was developed with special attention paid to the control volumes near the free boundary for accurate tracking.
APPLIED MATHEMATICS AND COMPUTATION
(2021)
Article
Mechanics
Nabil T. M. El-Dabe, Mohamed Y. Abou-Zeid, Mona A. A. Mohamed, Mohamed M. Abd-Elmoneim
Summary: The study focused on the peristaltic motion of non-Newtonian nanofluid with heat transfer in a non-uniform inclined channel, taking into account various factors such as thermal radiation and magnetic field. The governing equations were simplified and numerically solved to analyze the effects of physical parameters on the obtained solutions.
ARCHIVE OF APPLIED MECHANICS
(2021)
Article
Physics, Applied
Sneha Jaiswal, Pramod Kumar Yadav
Summary: This study investigates the generalized Couette flow of two immiscible Newtonian fluids in an anisotropic porous medium. The study reveals the significant influence of directional permeability on the flow velocity of both fluids and provides quantitative conclusions regarding the shear stress at the lower and upper wall of the channel, which has implications for the anisotropic nature of blood arteries. These findings contribute to a deeper understanding of fluid flow in anisotropic porous media and have potential applications in various engineering domains.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Mathematics, Applied
Rui Li, Yongchao Zhang, Jianhua Wu, Zhangxin Chen
Summary: This paper presents a numerical simulation of the single phase Darcy flow model in two-dimensional fractured porous media. The model is described as a reduced problem by coupling the bulk problem in porous matrix and the fracture problem in fractures. Numerical experiments demonstrate the accuracy, flexibility, and robustness of the discrete formulation for complicated networks of fractures in porous media domain.
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2021)
Article
Mathematics, Applied
Francesco Bonaldi, Konstantin Brenner, Jerome Droniou, Roland Masson
Summary: This article considers a two-phase Darcy flow model in fractured porous media, coupling matrix flow with tangential flow in fractures described as a network of planar surfaces. The model is discretized using the gradient discretization method, with a convergence result proven using discrete compactness techniques under assumptions of non-degeneracy of phase mobilities and physical consistency of discrete solutions. Numerical tests are provided using finite volume and finite element schemes to illustrate the behavior of the model's solution.
COMPUTERS & MATHEMATICS WITH APPLICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Payam Jalili, Ali Ahmadi Azar, Bahram Jalili, Davood Domiri Ganji
Summary: This paper investigates the impact of thermo-diffusion, electrical field, and nonlinear thermal radiation. The analysis of radiation heat transfer in non-Newtonian fluids has significant industrial applications. The Hybrid Analytical and Numerical Method is utilized to examine the thermal nonlinear radiation heat transfer flow in non-Darcy Casson fluid on stretched surfaces.
RESULTS IN PHYSICS
(2023)
Article
Water Resources
Martin P. Lautenschlaeger, Julius Weinmiller, Benjamin Kellers, Timo Danner, Arnulf Latz
Summary: This paper presents a homogenization approach based on the lattice Boltzmann method and the multi-component Shan-Chen method for simulating multi-phase flows in heterogeneous porous media. The approach successfully captures fluid-fluid and solid-fluid interactions within small-sized pores, which are smaller than the numerical discretization. It has been tested for various single-phase and two-phase flow problems and demonstrated its application in multi-scale and multi-phase flow problems in porous media, using the electrolyte filling process of realistic 3D lithium-ion battery electrode microstructures as an example. The proposed method has several advantages over comparable methods in the literature, including independent interfacial tension and wetting conditions, continuous physical properties across porous media interfaces, stability, ease of implementation, and applicability to heterogeneous and multi-scale porous media where multi-phase fluid flow occurs.
ADVANCES IN WATER RESOURCES
(2022)
Article
Engineering, Chemical
J. Liu, C. Y. Wang
Summary: This passage discusses a screen composed of in-plane thin strips embedded in a porous medium, and describes the effects of anisotropy on flow and screen drag. The governing equation is fourth order and solutions are found through eigenfunction superposition and point match. Extrapolation yields fundamental results for the drag of a single slat in an anisotropic porous medium.
TRANSPORT IN POROUS MEDIA
(2021)
Article
Mechanics
Vandita Sharma, Ching-Yao Chen, Manoranjan Mishra
Summary: This study numerically models and understands the convection, diffusion, and reaction dynamics of radial displacement of reactive fluids undergoing second-order chemical reaction in a porous medium. The effect of reaction rate on reaction dynamics is examined using a system of convection-diffusion-reaction equations and a method of lines. The study also presents temporal scalings for reaction characteristics in terms of the Damkohler number for the first time. In addition, the study analyzes the linear stability of miscible viscous fingering induced by chemical reaction using a hybrid numerical technique and finds a stable zone sandwiched between two unstable zones.
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.
