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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 107 for “"lattice-boltzmann"”.
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Mesoscopic lattice Boltzmann nemato-dynamics.
In this thesis we have developed an anisotropic lattice Boltzmann (LB) model that recovers the incompressible isentropic Ericksen-Leslie-Parodi (ELP) equations of continuum nemato-dynamics in two dimensions with the director confined to the plane. Suitable validations of the developed model against …
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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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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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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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Lattice Boltzmann Methods for Diffuse and Mobile Interfaces
In this work, various systematic approaches are employed for deriving the truncation error of LB models which approximate Navier-Stokes flows. Improved LB models are formulated and validated through point-by-point comparison with limiting benchmark flows. Finally, the modified LB models are used to …
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Applications of a novel many-component Lattice Boltzmann simulation
… 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 narrow interfaces). The new method imposes a relatively small computational overhead and has been validated against …
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Anwendung des Lattice-Boltzmann-Verfahrens zur Berechnung strömungsakustischer Probleme
The Lattice-Boltzmann-model is analyzed with regard to application to numerical solution of flow acoustic problems. In the first part of this study the description of sound wave propagation by common variants of the Lattice-Boltzmann-model is examined by calculation of phase velocity and effective …
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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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Molecular dynamics-Lattice Boltzmann hybrid method on graphics processors
… for flow calculations in any type of geometry. Lattice Boltzmann is a meso-scale continuum solver that has also become popular recently due to its relative efficiency in solving flow patterns compared to Navier-Stokes implementations. This work utilizes a Lattice Boltzmann code which is …
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Lattice-Boltzmann studies of multiphase flow through porous media
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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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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Multi-GPU Based Lattice Boltzmann Flow Simulations in Porous Media
… techniques with numerical simulations. The lattice Boltzmann (LB) method is a well-applied numerical method to simulate fluid flows in porous media at multiple length scales. The LB simulation is typically resource intensive due to its computational complexity and hence faces great numerical …
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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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A Lattice Boltzmann model for diffusion of binary gas mixtures
This thesis describes the development of a Lattice Boltzmann (LB) model for a binary gas mixture. Specifically, channel flow driven by a density gradient with diffusion slip occurring at the wall is studied in depth. The first part of this thesis sets the foundation for the multi-component model …
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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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Lattice-Boltzmann modeling of multiphase flow through rough heterogeneously wet fractures
… a 3D direct simulation approach via the lattice Boltzmann method was selected. This was chosen based on its rigorous kinetic derivation, its ability to simulate immiscible displacement, and its versatile boundary conditions. To study the effects of surface heterogeneities, synthetic …
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Mesoscopic Numerical Methods for Reactive Flows: Lattice Boltzmann Method and Beyond
… the effects in the macroscopic scale. The lattice Boltzmann method (LBM), a relatively new numerical method in computational fluid-dynamics (CFD), summarizes the requirements of numerical efficiency and potential to relate micro-and macro-scale. However, despite these features and the …
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