A non-local modification of a lattice Boltzmann model
Department of Physics,
The Ohio State University -
Columbus, Ohio 43210
Accepted: 9 January 1996
We discuss a non-local modification of the lattice Boltzmann BGK model. The modification involves the mixing of particle configurations over a range of distances. We show that at large distances and large times the modified BGK model entails the presence of an effective viscosity, and is thus similar to the usual closure approximation to the Navier-Stokes equation. We discuss the case of turbulent channel flow.
PACS: 51.10.+y – Kinetic and transport theory of gases / 51.20.+d – Viscosity, diffusion, and thermal conductivity / 47.27.Eq – Turbulence simulation and modeling
© EDP Sciences, 1996