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Showing 1 to 8 of 8 for “"Lattice Boltzmann Methods"”.
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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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Investigation of smooth contact angle treatment in porous media
… carefully treated. Mesoscopic techniques such as lattice Boltzmann methods are capable of dealing with lower capillary numbers as compared to the Navier-Stokes solvers, which can also implicitly capture the interface between two fluids.;To investigate immiscible two-phase ows at low Reynolds and …
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Pore-scale simulation frameworks for flow and transport in complex porous media
… of complex geometry on flow and transport. Lattice Boltzmann methods were implemented to model single-phase and two-phase flows through porous media. Validation tests were conducted on permeability, surface tension and contact angle against analytical equations and experimental data; it is …
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Image-Based Modeling of Porous Media Using FEM and Lagrangian Particle Tracking
… Stokes flow using both finite element (FEM) and Lattice Boltzmann methods. NPs have been widely used commercially and have the potential to be extensively used in petroleum engineering as stabilizers in enhanced oil recovery operations or as tracers or sensors to detect rock and fluid properties. …
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Towards sustainable heterogenous catalysis in molecular solar thermal energy storage (MOST) systems
… fluid dynamic (CFD) simulations applying Lattice Boltzmann methods were carried out to view fluid dynamic behaviour at the solid-liquid interface. In the fifth chapter, the solvent’s impact on the NBD/QC photoswitch reactions is investigated with an emphasis placed on finding a green …
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VOF Based Multiphase Lattice Boltzmann Method Using Explicit Kinematic Boundary Conditons at the Interface
A VOF based multiphase Lattice Boltzmann method that explicitly prescribes kinematic boundary conditions at the interface is developed. The advantage of the method is the direct control over the surface tension value. The details of the numerical method are presented. The Saffman instability, …
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Development and application of Lattice Boltzmann and accurate volume of fluid numerical techniques on graphics processing units
… We have examined two variants of two-phase Lattice Boltzmann methods (LBM) namely the Shan and Chen (SC) and He and Chen (HC) and applied them to study various flows including droplet impingement on solid and liquid surfaces, head-on and oblique droplet collisions, droplet deformation in a …
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The Quantized Velocity Finite Element Method
The Euler and Navier-Stokes-Fourier equations will be directly expressed as distribution evolution equations, where a new and proper continuum prescription will be derived. These equations of motion will be numerically solved with the development of a new and unique finite element formulation. Out …