OpenLB – Open Source Lattice Boltzmann Code › Forums › on Lattice Boltzmann Methods › General Topics › Discussion on LBM basics › Reply To: Discussion on LBM basics June 25, 2020 at 9:33 am #5046 mathiasKeymaster Hi, that is all fine, here ar ethe SI units: – m \int f(t,r,v) dv = \rho(t,r) [kg/m^3] – m [m] – f [1/m^3] – rho [kg/m^3] Best Mathias