Lattice Boltzmann method at finite-Knudsen numbers

Abstract

A modified lattice Boltzmann model with a stochastic relaxation mechanism mimicking "virtual'' collisions between free-streaming particles and solid walls is introduced. This modified scheme permits to compute plane channel flows in satisfactory agreement with analytical results over a broad spectrum of Knudsen numbers, ranging from the hydrodynamic regime, all the way to quasi-free flow regimes up to Kn 30.

4 pages, 4 figures

References in corpus (1)

• Kinetic boundary conditions in the lattice Boltzmann method

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