Article
Polymer Science
Ahmad Fakhari, Celio Fernandes
Summary: This study presents the development of an interface-capturing method for simulating the motion of air bubbles in viscoelastic fluids. The proposed algorithm accurately captures interface curvature and can be applied to various fluids for buoyancy-driven rise simulations. It has potential applications in bubble columns in reactors, oil and gas mixtures, 3D printing, polymer processing, etc.
Article
Engineering, Chemical
Luke H. Macfarlan, Mikey T. Phan, R. Bruce Eldridge
Summary: This study developed a novel interfacial mass transfer model capable of handling concentration jumps across two fluid interfaces. The model was validated on a two-dimensional system with different chemical systems. The predictions of the model agreed with the analytical solution within 1 percent. The study also provided a framework for combining the model with a Reynolds-averaged Navier Stokes approach.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
Conrado P. Zanutto, Emilio E. Paladino, Fabien Evrard, Berend van Wachem, Fabian Denner
Summary: This work introduces a numerical model based on a single-field formulation and the algebraic Volume-of-Fluid (VOF) method for predicting interfacial heat and mass transfer, as well as the investigation of the Compressive Continuous Species Transfer (C-CST) model.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Computer Science, Interdisciplinary Applications
Seyed Assadollah Sattari, Farhad Shahraki, Nima Samkhaniani, Hossein Atashi
Summary: This study implements a new solver to simulate component mass transfer alongside deformable gas-liquid interfaces. The effect of bubble hydrodynamics on the simultaneous diffusion reaction and selectivity is investigated. The simulations validate the model reliability and show that the mass transfer rate is influenced by boundary concentration, layer thickness, and bubble surface area. Furthermore, the selectivity increases with decreasing bubble diameter.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2023)
Article
Computer Science, Interdisciplinary Applications
Fabian Froede, Temistocle Grenga, Vincent Le Chenadec, Mathis Bode, Heinz Pitsch
Summary: This paper presents an improvement of the three-dimensional unsplit cell-based advection scheme, addressing the issue of conservation errors. The improved method ensures discrete conservation by introducing a correction of the projected cells, which is tested and applied in a realistic atomization case.
JOURNAL OF COMPUTATIONAL PHYSICS
(2022)
Article
Energy & Fuels
Mirza Popovac
Summary: The paper introduces a direct method for updating design variables to enhance the robustness of continuous adjoint topology optimization, effectively controlling the target volume of design variables without any case-dependent parameters. Testing on complex 3D engineering problems shows that this alternative method does not affect computational demands or numerical stability in simulations.
Article
Thermodynamics
Saima Batool, Ghulam Rasool, Nawa Alshammari, Ilyas Khan, Hajra Kaneez, Nawaf Hamadneh
Summary: This article analyzes the heat and mass transfer mechanism of a micropolar nanofluid embedded with buoyancy force and magnetic field. The mathematical model is constructed using mass, energy, and momentum equations, and numerical simulations are performed using the finite volume approach. The study finds that the random mobility of nanoparticles leads to more heat emission inside the enclosure, and mass diffusion is faster for smaller Schmidt numbers. Additionally, a high vortex viscosity parameter has a significant effect when thermophoresis parameter and Reynolds number are significant.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Rodrigo L. F. Castello Branco, Bruno B. M. Kassar, Joao N. E. Carneiro, Angela O. Nieckele
Summary: Multiphase flows are important in both nature and industry, and accurately describing the interfaces between different phases is crucial. This study introduces a new method that combines a point cloud-based interface curvature computation with a sharp-interface advection algorithm to handle multiphase flows more accurately and stably.
COMPUTERS & FLUIDS
(2022)
Article
Thermodynamics
M. Popovac, J. Emhofer, Ch. Reichl
Summary: This study presents a numerical investigation of the frosting behavior of a heat pump evaporator, achieving a high level of agreement with experimental results through simulation and prediction of frost growth.
APPLIED THERMAL ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Yan Zhang, Liqun Lyu, Peng Li
Summary: Debris flows are a common geological hazard that cause severe damage to buildings and humans. This study developed a numerical method to simulate the movement of debris flows and validated the method using indoor experimental data. The proposed method is significant for the three-dimensional simulation of large-scale debris flows.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Computer Science, Interdisciplinary Applications
Johannes Kromer, Dieter Bothe
Summary: The algorithm introduced in this work efficiently solves the problem of finding a plane with a given normal vector. The combination of recursive Gaussian divergence theorem and dynamic choice of coordinate origin results in significant improvement in computational efficiency and performance.
JOURNAL OF COMPUTATIONAL PHYSICS
(2022)
Article
Engineering, Ocean
C. H. Yu, G. Z. Yang, Z. H. Gu, Y. L. Li
Summary: A Coupled Level Set and Volume Of Fluid (CLSVOF) method is proposed in this article for simulating the multi-bubble rising problem. This method accurately conserves mass and captures gas/liquid moving interface to understand bubbles' evolution in detail. The present CLSVOF method is also combined with the projection method of flow field solver to provide two-phase flow field solutions.
APPLIED OCEAN RESEARCH
(2023)
Article
Engineering, Marine
Jia-Yu Sun, Shi-Li Sun, Shu-Zheng Sun, Hui -Long Ren
Summary: This study investigates the resistance performance of a drillship with different moonpool configurations under various water conditions using a numerical model. The results suggest that the added resistance caused by the moonpool can be effectively reduced by optimizing the configuration of the notch.
Article
Engineering, Multidisciplinary
Kun Yan, YunYu Wang, Yu Pan, Guo Sun, Jian Chen, XianHui Cai, GengDong Cheng
Summary: This paper proposes a topology optimization method based on the finite volume method (FVM) for simplified convective heat transfer. A novel adjoint sensitivity analysis method applicable to FVM is developed, along with a program developed in OpenFOAM and PETSc for parallel large-scale optimization. Numerical examples demonstrate the effectiveness and feasibility of the proposed method.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Mechanics
Luhaibo Zhao, Yuanheyi Lu, Delong Lu, Zhiyong Tang
Summary: In this study, a general two-phase flow and mass transfer CFD model for bubbling system was developed based on OpenFOAM. The accuracy and stability of the simulations were ensured by investigating the influence of each phase parameter of the Blend interface model. The interphase force models (such as drag, lift, turbulent) and multi-size bubble models (population balance equation and interfacial area transport equation) were studied and compared using visual bubble measurements. Furthermore, the validity of the multi-size bubbling flow coupled mass transfer model was successfully verified by experiments, offering a free and open-source modeling method for industrial applications.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2023)
Article
Engineering, Chemical
Julien Maes, Cyprien Soulaine
CHEMICAL ENGINEERING SCIENCE
(2018)
Article
Mechanics
Cyprien Soulaine, Sophie Roman, Anthony Kovscek, Hamdi A. Tchelepi
JOURNAL OF FLUID MECHANICS
(2018)
Article
Engineering, Chemical
Cyprien Soulaine, Patrice Creux, Hamdi A. Tchelepi
TRANSPORT IN POROUS MEDIA
(2019)
Article
Chemistry, Physical
Sophie Roman, Cyprien Soulaine, Anthony R. Kovscek
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Engineering, Chemical
Catherine Noiriel, Cyprien Soulaine
Summary: This article reviews recent advances in pore-scale imaging and reactive flow modelling applied to interface dynamics, emphasizing the unique advantage of digital rocks in tracking interface evolution and the complementary role of pore-scale reactive transport modelling in laboratory experiments. The integration of sub-voxel porosity in advanced multi-scale models is discussed, along with examples illustrating the dynamics of interfaces under different transport regimes and rock matrix properties. The challenges associated with precipitation processes, rock texture, and upscaling to larger scales are also addressed.
TRANSPORT IN POROUS MEDIA
(2021)
Article
Computer Science, Interdisciplinary Applications
Cyprien Soulaine, Saideep Pavuluri, Francis Claret, Christophe Tournassat
Summary: porousMedia4Foam is a software package for solving flow and transport in porous media, featuring a new generation open-source hydrogeochemical module that allows for investigations of hydro-geochemical processes at multiple scales. The package can be used for studying processes such as hydro-bio-geochemical interactions and contaminant transport in aquifers.
ENVIRONMENTAL MODELLING & SOFTWARE
(2021)
Article
Water Resources
Francisco J. Carrillo, Cyprien Soulaine, Ian C. Bourg
Summary: Sub-resolution porosity is a common but often overlooked feature in Digital Rock Physics, and it has a significant impact on multiphase flow.
ADVANCES IN WATER RESOURCES
(2022)
Article
Geochemistry & Geophysics
Hang Deng, Mehdi Gharasoo, Liwei Zhang, Zhenxue Dai, Alireza Hajizadeh, Catherine A. Peters, Cyprien Soulaine, Martin Thullner, Philippe Van Cappellen
Summary: This article provides a brief review of recent developments and applications of reactive transport modeling to study geochemically driven processes and alteration in porous media, and provides a perspective on opportunities and challenges for continuously developing and expanding the role of this methodology.
APPLIED GEOCHEMISTRY
(2022)
Article
Water Resources
Mahdi Mansouri-Boroujeni, Cyprien Soulaine, Mohamed Azaroual, Sophie Roman
Summary: Immiscible two-phase flow through porous media is composed of a series of pore invasions. The consequences of pore-scale processes on macroscopic fluid front behavior are investigated. Different invasion mechanisms and front behaviors are characterized and correlated for various flow conditions. A new crossover flow regime is identified, showing mixed behavior between capillary and viscous dominated regimes. The global front behavior is predicted based on numerical simulations and experimental results for all flow regimes.
ADVANCES IN WATER RESOURCES
(2023)
Article
Biochemical Research Methods
Flore Rembert, Arnaud Stolz, Cyprien Soulaine, Sophie Roman
Summary: We utilize microfabrication technologies to miniaturize geoelectrical acquisition for investigating coupled processes in the critical zone. Specifically, we focus on the development of complex electrical conductivity acquisition using the spectral induced polarization (SIP) method on a microfluidic chip with electrodes. By working at the micrometer scale, we are able to monitor biogeochemical processes in well-controlled conditions and directly observe microscopic reactive transport processes in the critical zone.
Review
Water Resources
Cyprien Soulaine, Julien Maes, Sophie Roman
Summary: Computational microfluidics for geosciences, as the third pillar of the scientific strategy, aims to decipher coupled processes in geological porous media by solving fundamental equations of continuum mechanics in exact porous materials geometry. Despite being in its early stages, recent progress in modeling multiphase flow and reactive transport at the pore-scale has provided new insights into the mechanisms occurring in geological porous media.
FRONTIERS IN WATER
(2021)
Article
Energy & Fuels
Cyprien Soulaine, Laurence Girolami, Laurent Arbaret, Sophie Roman
Summary: The study evaluated the longitudinal dispersion of a sandpack using Digital Rock Physics and found that dispersion scales as a power law of the Peclet number. The assessment methodology is generic and can be applied to any kind of rock samples.
OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
(2021)
Article
Biochemical Research Methods
Jenna Poonoosamy, Cyprien Soulaine, Alina Burmeister, Guido Deissmann, Dirk Bosbach, Sophie Roman
Article
Mechanics
Cyprien Soulaine, Sophie Roman, Anthony Kovscek, Hamdi A. Tchelepi
JOURNAL OF FLUID MECHANICS
(2017)
Article
Computer Science, Interdisciplinary Applications
Tian Liang, Lin Fu
Summary: In this work, a new shock-capturing framework is proposed based on a new candidate stencil arrangement and the combination of infinitely differentiable non-polynomial RBF-based reconstruction in smooth regions with jump-like non-polynomial interpolation for genuine discontinuities. The resulting scheme achieves high order accuracy and resolves genuine discontinuities with sub-cell resolution.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Lukas Lundgren, Murtazo Nazarov
Summary: In this paper, a high-order accurate finite element method for incompressible variable density flow is introduced. The method addresses the issues of saddle point system and stability problem through Schur complement preconditioning and artificial compressibility approaches, and it is validated to have high-order accuracy for smooth problems and accurately resolve discontinuities.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Gabriele Ciaramella, Laurence Halpern, Luca Mechelli
Summary: This paper presents a novel convergence analysis of the optimized Schwarz waveform relaxation method for solving optimal control problems governed by periodic parabolic PDEs. The analysis is based on a Fourier-type technique applied to a semidiscrete-in-time form of the optimality condition, which enables a precise characterization of the convergence factor at the semidiscrete level. The behavior of the optimal transmission condition parameter is also analyzed in detail as the time discretization approaches zero.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Jonas A. Actor, Xiaozhe Hu, Andy Huang, Scott A. Roberts, Nathaniel Trask
Summary: This article introduces a scientific machine learning framework that uses a partition of unity architecture to model physics through control volume analysis. The framework can extract reduced models from full field data while preserving the physics. It is applicable to manifolds in arbitrary dimension and has been demonstrated effective in specific problems.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Nozomi Magome, Naoki Morita, Shigeki Kaneko, Naoto Mitsume
Summary: This paper proposes a novel strategy called B-spline based SFEM to fundamentally solve the problems of the conventional SFEM. It uses different basis functions and cubic B-spline basis functions with C-2-continuity to improve the accuracy of numerical integration and avoid matrix singularity. Numerical results show that the proposed method is superior to conventional methods in terms of accuracy and convergence.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Timothy R. Law, Philip T. Barton
Summary: This paper presents a practical cell-centred volume-of-fluid method for simulating compressible solid-fluid problems within a pure Eulerian setting. The method incorporates a mixed-cell update to maintain sharp interfaces, and can be easily extended to include other coupled physics. Various challenging test problems are used to validate the method, and its robustness and application in a multi-physics context are demonstrated.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Xing Ji, Fengxiang Zhao, Wei Shyy, Kun Xu
Summary: This paper presents the development of a third-order compact gas-kinetic scheme for compressible Euler and Navier-Stokes solutions, constructed particularly for an unstructured tetrahedral mesh. The scheme demonstrates robustness in high-speed flow computation and exhibits excellent adaptability to meshes with complex geometrical configurations.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Alsadig Ali, Abdullah Al-Mamun, Felipe Pereira, Arunasalam Rahunanthan
Summary: This paper presents a novel Bayesian statistical framework for the characterization of natural subsurface formations, and introduces the concept of multiscale sampling to localize the search in the stochastic space. The results show that the proposed framework performs well in solving inverse problems related to porous media flows.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Jacob Rains, Yi Wang, Alec House, Andrew L. Kaminsky, Nathan A. Tison, Vamshi M. Korivi
Summary: This paper presents a novel method called constrained optimized DMD with Control (cOptDMDc), which extends the optimized DMD method to systems with exogenous inputs and can enforce the stability of the resulting reduced order model (ROM). The proposed method optimally places eigenvalues within the stable region, thus mitigating spurious eigenvalue issues. Comparative studies show that cOptDMDc achieves high accuracy and robustness.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Andrea La Spina, Jacob Fish
Summary: This work introduces a hybridizable discontinuous Galerkin formulation for simulating ideal plasmas. The proposed method couples the fluid and electromagnetic subproblems monolithically based on source and employs a fully implicit time integration scheme. The approach also utilizes a projection-based divergence correction method to enforce the Gauss laws in challenging scenarios. Numerical examples demonstrate the high-order accuracy, efficiency, and robustness of the proposed formulation.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Junhong Yue, Peijun Li
Summary: This paper proposes two numerical methods (IP-FEM and BP-FEM) to study the flexural wave scattering problem of an arbitrary-shaped cavity on an infinite thin plate. These methods successfully decompose the fourth-order plate wave equation into the Helmholtz and modified Helmholtz equations with coupled conditions on the cavity boundary, providing an effective solution to this challenging problem.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
William Anderson, Mohammad Farazmand
Summary: We develop fast and scalable methods, called RONS, for computing reduced-order nonlinear solutions. These methods have been proven to be highly effective in tackling challenging problems, but become computationally prohibitive as the number of parameters grows. To address this issue, three separate methods are proposed and their efficacy is demonstrated through examples. The application of RONS to neural networks is also discussed.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Marco Caliari, Fabio Cassini
Summary: In this paper, a second order exponential scheme for stiff evolutionary advection-diffusion-reaction equations is proposed. The scheme is based on a directional splitting approach and uses computation of small sized exponential-like functions and tensor-matrix products for efficient implementation. Numerical examples demonstrate the advantage of the proposed approach over state-of-the-art techniques.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Sebastiano Boscarino, Seung Yeon Cho, Giovanni Russo
Summary: This work proposes a high order conservative semi-Lagrangian method for the inhomogeneous Boltzmann equation of rarefied gas dynamics. The method combines a semi-Lagrangian scheme for the convection term, a fast spectral method for computation of the collision operator, and a high order conservative reconstruction and a weighted optimization technique to preserve conservative quantities. Numerical tests demonstrate the accuracy and efficiency of the proposed method.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Jialei Li, Xiaodong Liu, Qingxiang Shi
Summary: This study shows that the number, centers, scattering strengths, inner and outer diameters of spherical shell-structured sources can be uniquely determined from the far field patterns. A numerical scheme is proposed for reconstructing the spherical shell-structured sources, which includes a migration series method for locating the centers and an iterative method for computing the inner and outer diameters without computing derivatives.
JOURNAL OF COMPUTATIONAL PHYSICS
(2024)
