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27
Progress in lattice Boltzmann methods for magnetohydrodynamic flows relevant to fusion applications
, 2007
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Analysis of lattice Boltzmann nodes initialization in Moving Boundary problems
"... Abstract: The lattice Boltzmann method is a numerical scheme based on a fixed grid. Dealing with moving boundary problems, proper routines are needed to initialize the variables at the new nodes, created by the variations of the computational fluid domain. We use the asymptotic analysis to investiga ..."
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Abstract: The lattice Boltzmann method is a numerical scheme based on a fixed grid. Dealing with moving boundary problems, proper routines are needed to initialize the variables at the new nodes, created by the variations of the computational fluid domain. We use the asymptotic analysis to investigate the problem and possible solutions. A simple algorithm is proposed, able to achieve the same accuracy as the standard LBM. The theoretical predictions are tested on simple benchmarks.
A lattice Boltzmann Method for Immiscible Multiphase Flow Simulations using the Level Set Method
, 2009
"... This work has been supported by DFG grants JU 440/13, STE 871/1 and ..."
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This work has been supported by DFG grants JU 440/13, STE 871/1 and
A Thermal Lattice Boltzmann TwoPhase Flow Model and Its Application to Heat Transfer Problems—Part 1. Theoretical Foundation,”
 ASME J. Fluids Eng.,
, 2006
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Multiscale lattice Boltzmann approach to modeling gas flows
 Physical Review E
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LATTICE BOLTZMANN SIMULATION OF FLOW OVER A CIRCULAR CYLINDER AT MODERATE REYNOLDS NUMBERS by
"... viscous flow past a circular cylinder confined in a channel. Computations are carried out both for steady and unsteady flows and the critical Reynolds number at which symmetry breaks and unsteadiness sets in is predicted. Effects of Reynolds number, blockage ratio and channel length are studied in ..."
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viscous flow past a circular cylinder confined in a channel. Computations are carried out both for steady and unsteady flows and the critical Reynolds number at which symmetry breaks and unsteadiness sets in is predicted. Effects of Reynolds number, blockage ratio and channel length are studied in some details. All the results compare quite well with those computed with continuumbased methods, demonstrating the ability and usefulness of the Lattice Boltzmann method in capturing the flow features of this interesting and fluidmechanically rich problem. Key words: 2D, circular cylinder, confined channel, Lattice Boltzmann method,
A lattice Boltzmann method for electric fieldspace charge coupled problems
"... AbstractA lattice Boltzmann method (LBM) is developed to solve the electric fieldspace charge coupled problems. Instead of solving the macroscopic current continuity equation and the Poisson's equation, two discrete lattice Boltzmann equations are formulated and solved to obtain the distribu ..."
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AbstractA lattice Boltzmann method (LBM) is developed to solve the electric fieldspace charge coupled problems. Instead of solving the macroscopic current continuity equation and the Poisson's equation, two discrete lattice Boltzmann equations are formulated and solved to obtain the distributions of charge density and electric potential. The nonequilibrium extrapolation scheme is used to treat the boundary conditions with complex geometry. Our technique is verified with several test cases for which analytical solution and/or numerical results exits. A key feature of this methodology lies in its natural coupling with the LBM for fluid flow. As a demonstration, the injection induced electroconvection of dielectric liquids in a concentriccylinder configuration is considered.
Lattice Boltzmann method as a computational framework for multiscale haemodynamics Lattice Boltzmann method as a computational framework for multiscale haemodynamics
, 2013
"... Recent developments of the lattice Boltzmann method for largescale haemodynamic applications are presented, with special focus on multiscale aspects, including the selfconsistent dynamics of suspended biological bodies and their coupling to surface structures, such as the glycocalyx, in the proxi ..."
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Recent developments of the lattice Boltzmann method for largescale haemodynamic applications are presented, with special focus on multiscale aspects, including the selfconsistent dynamics of suspended biological bodies and their coupling to surface structures, such as the glycocalyx, in the proximity of endothelium using unstructured grids. The description of such multiscale phenomena, each one treated with a suitable variation of the lattice Boltzmann method, opens up new perspectives for a fundamental understanding of the physical mechanisms underlying cardiovascular pathologies, such as plaque growth and the subsequent development of atherosclerotic diseases.
FLOWINDUCED VIBRATIONS OF TWO TANDEM CYLINDERS IN A CHANNEL by
"... We numerically studied flowinduced vibrations of two tandem cylinders in transverse direction between two parallel walls. The effect of the horizontal separation between two cylinders, ranging from 1.1 to 10, on the motions of the cylinders and the flow structures were investigated and a variety o ..."
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We numerically studied flowinduced vibrations of two tandem cylinders in transverse direction between two parallel walls. The effect of the horizontal separation between two cylinders, ranging from 1.1 to 10, on the motions of the cylinders and the flow structures were investigated and a variety of periodic and nonperiodic vibration regimes were observed. The results show that when two cylinders are placed in close proximity to each other, compared with the case of an isolated cylinder, the gap flow plays an important role. As the separation ratio is increased, the fluidstructure interaction decouples and the cylinders behave as two isolated cylinders. Key words: vortexinduced vibration, two tandem cylinders, channel