We discuss the implementation of diffuse reflection boundary conditions in a thermal lattice Boltzmann model for which the upwind finite difference scheme is used to solve the set of evolution equations recovered afte...
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We discuss the implementation of diffuse reflection boundary conditions in a thermal lattice Boltzmann model for which the upwind finite difference scheme is used to solve the set of evolution equations recovered after discretization of the velocity space. simulation of heat transport between two parallel walls at rest shows evidence of temperature jumps at the walls that increase with Knudsen number. When the walls move in opposite directions with speeds ±uW, fluid velocity slip is observed at the walls, together with temperature jumps.
In this paper introduce a finite difference lattice Boltzmann model capable to describe the hydrodynamics and the phase separation of a two‐dimensional liquid‐vapor system. A numerical scheme involving flux limiter ...
In this paper introduce a finite difference lattice Boltzmann model capable to describe the hydrodynamics and the phase separation of a two‐dimensional liquid‐vapor system. A numerical scheme involving flux limiter techniques is proposed to minimize spurious numerical effects. We report some simulation results of the spinodal decomposition process and we find evidence of two different growth regimes depending on the system viscosity.
In this paper we apply a finite difference lattice Boltzmann model to study the phase separation in a two-dimensional liquid-vapor system. Spurious numerical effects in macroscopic equations are discussed and an appro...
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In this paper we apply a finite difference lattice Boltzmann model to study the phase separation in a two-dimensional liquid-vapor system. Spurious numerical effects in macroscopic equations are discussed and an appropriate numerical scheme involving flux limiter techniques is proposed to minimize them and guarantee a better numerical stability at very low viscosity. The phase separation kinetics is investigated and we find evidence of two different growth regimes depending on the value of the fluid viscosity as well as on the liquid-vapor ratio.
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