Lattice Boltzmann method at finite-Knudsen numbers

Details Lattice Boltzmann method at finite-Knudsen numbers Lattice Boltzmann method at finite-Knudsen numbers

2004-11-28

arxiv.org/abs/nlin/0411058v1

Europhysics Letters 69 4 (2005) 549-555

Nonlinear Sciences

Chaotic Dynamics

4 pages, 4 figures

Scientific paper

10.1209/epl/i2004-10393-0

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.

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