OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Periodic Outlet Boundary Conditions ( nonequilibrium extrapolation method) › Reply To: Periodic Outlet Boundary Conditions ( nonequilibrium extrapolation method) March 30, 2023 at 2:24 pm #7341 FBukreevKeymaster I mean that you can look at the parameters of the particlemanager in the src and than put the periodicity vector as argument on the right place in the particlemanager declaration in your simulation setup.