OpenLB – Open Source Lattice Boltzmann Code › Forums › on Lattice Boltzmann Methods › General Topics › Lattice Boltzmann Method (material properties) › Reply To: Lattice Boltzmann Method (material properties) February 1, 2023 at 9:25 am #7156 mathiasKeymaster The Reynolds number = ((U*L)/kinematic viscosity) [-] as always. Just consider LBM as a solver vor the incompressible Navier Stokes Equation, speaking about Re. It can also be seen as solver of other equations.