منابع مشابه
Lattice Boltzmann Method with regularized non-equilibrium distribution functions
The lattice Boltzmann (LB) model is a recent technique for the simulation and modeling of fluid flows [1– 5]. During the past fifteen years it has been successfully applied to many challenging problems in hydrodynamics as well as reaction-diffusion processes and wave propagation phenomena [6]. A particular shortcoming of this technique are numerical instabilities, that may develop at high Reyno...
متن کاملGeneralized local equilibrium in the cascaded lattice Boltzmann method.
By realizing the insufficient degree of Galilean invariance of the traditional multiple-relaxation-time collision operators, Geier [Phys. Rev. E 73, 066705 (2006)] proposed to relax differently the moments shifted by the macroscopic velocity, leading to the so-called cascaded lattice Boltzmann method (LBM). This paper points out that (a) the cascaded LBM essentially consists in adopting a gener...
متن کاملLattice Boltzmann method
Lattice Boltzmann method is relatively new method in the field of computational fluid dynamics. It has been derived from lattice gas automata and is still under development. Basic steps of the LBM (collision, streaming, boundary conditions, macroscopic quantities) will be presented. Comparison with the finite difference method that uses Navier-Stokes equation on a lid driven cavity benchmark te...
متن کاملConsistent lattice Boltzmann method.
Lack of energy conservation in lattice Boltzmann models leads to unrealistically high values of the bulk viscosity. For this reason, the lattice Boltzmann method remains a computational tool rather than a model of a fluid. A novel lattice Boltzmann model with energy conservation is derived from Boltzmann's kinetic theory. Simulations demonstrate that the new lattice Boltzmann model is the valid...
متن کاملCrystallographic Lattice Boltzmann Method
Current approaches to Direct Numerical Simulation (DNS) are computationally quite expensive for most realistic scientific and engineering applications of Fluid Dynamics such as automobiles or atmospheric flows. The Lattice Boltzmann Method (LBM), with its simplified kinetic descriptions, has emerged as an important tool for simulating hydrodynamics. In a heterogeneous computing environment, it ...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2007
ISSN: 1434-6028,1434-6036
DOI: 10.1140/epjb/e2007-00100-1