Related Experiment Video
Updated: Nov 30, 2025
10:52
Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
Published on: April 12, 2019
13.1K
Benchmark cases for a multi-component Lattice-Boltzmann method in hydrostatic conditions
E P Montellà1,2, B Chareyre1, S Salager1
1University Grenoble Alpes (UGA), CNRS, Grenoble INP, 3SR, Grenoble F-38000, France.
Methodsx
|November 16, 2020
Summary
This study uses the lattice Boltzmann method (LBM) to simulate fluid behavior in porous materials. A novel wall retraction technique significantly reduces errors in simulations of multiphase flow.
Area of Science:
- Computational physics
- Pore-scale modeling
- Multiphase flow simulations
Background:
- Understanding fluid behavior in porous media is crucial for various applications.
- Accurate pore-scale simulations are needed to capture complex hydrostatic properties.
- Existing lattice Boltzmann method (LBM) simulations can suffer from discretization errors.
Purpose of the Study:
- To evaluate hydrostatic properties of partially saturated granular materials at the pore scale using LBM.
- To develop and validate a method for reducing discretization errors in LBM simulations.
- To provide practical guidelines for LBM simulations of multiphase problems in porous media.
Main Methods:
- Utilized the lattice Boltzmann method (LBM) with Palabos implementation of the multi-component multiphase Shan-Chen model.
- Developed and applied a solid walls retraction procedure to minimize discretization errors.
- Validated simulation results against benchmark cases, including the Young-Laplace equation and analytical predictions for capillary pressure and meniscus profiles.
Main Results:
- The proposed wall retraction procedure significantly reduces discretization errors, achieving quadratic convergence.
- Simulated equilibrium shapes of pendular bridges show good agreement with the Young-Laplace equation.
- Numerical predictions for entry capillary pressure and meniscus profiles in various tube shapes align with analytical results.
Conclusions:
- The study provides a validated LBM approach for simulating hydrostatic properties in porous media.
- The wall retraction procedure is an effective technique for enhancing the accuracy of LBM simulations.
- Benchmark cases and practical guidelines are offered for future LBM multiphase flow research.
More Related Videos
07:31Author Spotlight: Advancing Cell Membrane Biophysics - Exploring Interactions and Challenges Through Experimental and Computational Approaches
Published on: September 1, 2023
2.8K
10:36Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
Published on: November 3, 2023
1.9K
Related Concept Videos
01:20Maxwell-Boltzmann Distribution: Problem Solving
2.1K
Individual molecules in a gas move in random directions, but a gas containing numerous molecules has a predictable distribution of molecular speeds, which is known as the Maxwell-Boltzmann distribution, f(v).
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by
2.1K
01:30Typical Model Studies
532
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
532
01:28Magnetostatic Boundary Conditions
1.5K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.5K
01:22Generalized Hooke's Law
2.3K
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of the...
2.3K
01:18Newtonian Fluid: Problem Solving
687
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
687
01:17Steady, Laminar Flow Between Parallel Plates
618
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
618