OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › incEquilibrium › Re: incEquilibrium June 18, 2018 at 10:01 am #2842 mathiasKeymaster No, the difference come from that in OpenLB the distribution is stored as f_OpenLB = f – f^eq. Therefore, also the collision operation is presented in a different way. Best Mathias