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Showing 1 to 20 of 28 for “"lattice Boltzmann method (LBM)"”.
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Simulation of two-phase dynamics using lattice boltzmann method (LBM)
In this dissertation, a new lattice Boltzmann model, called the artificial interface lattice Boltzmann model (AILB model), is proposed for the simulation of two-phase dynamics. The model is based on the principle of free energy minimization and invokes the Gibbs-Duhem equation in the formulation of …
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Parallel Lattice Boltzmann Method for Convection in Dendritic Solidification
… validation and implementation of a parallel lattice Boltzmann method (LBM) for resolving fluid flow in multi-physics problems, such as alloy solidification, focusing on the effects on microstructure evolution. The literature has shown the importance of fluid flow in solidification as it …
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Boundless Fluids Using the Lattice-Boltzmann Method
… substances like smoke, fire, and water. The Lattice-Boltzmann Method (LBM) is one fluid simulation technique that has gained recent popularity due to its relatively simple basic algorithm and the ease with which it can be distributed across multiple processors. Unfortunately, current LBM …
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Development of designer-relevant Lattice-Boltzmann Wind Field Model for urban canyons and their neighborhoods
… for designers' use. In this thesis, a novel Lattice-Boltzmann Wind Field Model (LBWFM) is developed and integrated in a designer-relevant Rhino-based environment. Lattice-Boltzmann Method (LBM) is introduced as the solver due to its open-source and parallelism natures, and coded in C# …
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Lattice Boltzmann simulations of multiphase flows
… account of my experiences implementing the Lattice Boltzmann Method (LBM) for the purpose of simulating multiphase flows relevant to Air Conditioning and Refrigeration Center (ACRC) applications. Other methodologies have been used to simulate multiphase flow including finite volume based …
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On Microstructural Analysis of Porous Media Existing in Fuel Cells Using the Lattice Boltzmann Method
… In order to achieve this; the widely used methodology for solving problems in porous media has been applied, the Lattice Boltzmann Method (LBM). LBM presents several advantages to solve problems where the microstructural architecture is complex. The introductory part presents the scope of …
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Approximating three-dimensional fluid flow in a microfluidic device with a two-dimensional, depth-averaged lattice Boltzmann method
… surfaces omitted by the 2D simulation. The 2D lattice Boltzmann method (LBM) is reformulated to solve the depth-averaged Stokes equations and the viscous drag body force approximation is applied. The 2D, depth-averaged LBM is benchmarked by comparison to depth-averaged results of the 3D LBM in …
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Hydraulic fracturing through 3D printing and lattice modelling
… using the 3D printing techniques and the lattice modelling. The first half of the thesis presents the experimental studies. Firstly, the potential of 3D printing on rock mechanics is explored by Polylactic acid (PLA) material, but its plastic property inhibits the direct simulation of …
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Electrohydrodynamic Simulations of Capsule Deformation Using a Dual Time-Stepping Lattice Boltzmann Scheme
… are solved using the immersed interface method. A finite element method is used to compute the membrane’s elastic forces and the membrane’s bending resistance is described by the Helfrich bending energy functional. The membrane forces are coupled to the fluid equations through the …
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An improved volumetric LBM boundary approach and its extension for sliding mesh simulation
<p>The lattice Boltzmann method (LBM) has been emerging as a promising alternative CFD approach for complex fluid flows. With LBM, no-slip/free-slip wall boundary conditions are implemented via straightforward particle bounce-back/specular reflections on a solid surface, thus enable the use of …
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LATTICE BOLTZMANN SIMULATION OF BINARY DROP COALESCENCE AT LOW WEBER NUMBER
"A numerical study has been performed using a lattice Boltzmann method (LBM) for an incompressible binary fluid based on the Cahn-Hilliard diffuse interface approach to investigate the early-time coalescence dynamics of two liquid drops. The two drops approach each other at a very low Weber number …
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Adsorption Thermodynamics and Mass Transfer of Toxic Volatile Organic Compounds in Activated -Carbon Fiber -Cloth for Air Pollution Control
… equation provided a convenient and reliable method to determine the mesopore size distribution of the adsorbent. Effective diffusivity of adsorbates into the fibers was then modeled as a function of temperature, adsorbate partial pressure and adsorbent pore size distribution. A non-dispersive …
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Lattice Boltzmann liquid simulations on graphics hardware
… Within the field of fluid simulation, the Lattice Boltzmann Method (LBM) stands out as a candidate for GPU execution because its grid-based structure is a natural fit for GPU parallelism. This thesis describes the design and implementation of a GPU-based free-surface LBM fluid simulation. …
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Numerical Modeling of Microscale Mixing Using Lattice Boltzmann Method
… this work a numerical model is developed using a lattice Boltzmann method (LBM) to study microscale mixing. The study involves two mixing methods, namely, electroosmotic mixing and magnetic assisted mixing. A single component LBM model is developed to study electroosmotic flow in a square cavity. …
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Applications of a novel many-component Lattice Boltzmann simulation
… a considerable challenge to established methods such as computational fluid dynamics (CFD). In this PhD project, work has been undertaken to extend the lattice Boltzmann method (LBM), and enable it to represent a large number of mutually immiscible, deformable, droplets (separated by …
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Lattice Boltzmann modeling for shallow water equations using high performance computing
… dissertation project is to extend the standard Lattice Boltzmann method (LBM) for shallow water flows in order to deal with three dimensional flow fields. The shallow water and mass transport equations have wide applications in ocean, coastal, and hydraulic engineering, which can benefit from …
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Accelerated Lattice Boltzmann Method For Colloidal Suspensions Rheology And Interface Morphology
<p>ABSTRACT</p> <p>ACCELERATED LATTICE BOLTZMANN MODEL FOR COLLOIDAL SUSPENSIONS RHEOLOGY AND INTERFACE MORPHOLOGY</p> <p> by</p> <p> HASSAN FARHAT</p> <p> July 2010</p> <p>Advisor: Dr. Singh Trilochan</p> <p>Co-Advisor: Dr. Joon Sang Lee</p> <p>Major: Mechanical Engineering</p> <p>Degree: Doctor …
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Diffusion-weighted MRI of skeletal muscle: Estimation of microstructural parameters
… for dMRI physics in multiphase tissues using the lattice Boltzmann method (LBM) to characterize the interplay between the microstructural organization of skeletal muscle and dMRI physics. This characterization consists of a comparison of the LBM model with analytical two-compartment models as well …
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Numerical Study on Droplet Formation and Cell Encapsulation Process in a Micro T-junction via Lattice Boltzmann Method
… is simulated using two- and three-dimensional lattice Boltzmann method (LBM). With the adoption of pseudo potential model, the LBM can accomplish the accurate tracking of the liquid-liquid or liquid-gas interface automatically. The two-dimensional simulation results agree favorably with …
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Parallel fluid dynamics for the film and animation industries
… large scenes to be created. One of the newer methods for fluid simulation is the Lattice Boltzmann Method (LBM). This is a cellular automata type of algorithm, which parallelizes easily. An important part of the process of parallelization is load balancing; the distribution of computation …
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