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 2:09 pm #7340 Henderson_CParticipant Dear Fedor, By that you mean modify the source code (src/particles/particlemanager) with the periodicity vector? regards,