OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Set Periodic Boundary condition and set contact angle for multiphase simulation › Re: Set Periodic Boundary condition and set contact angle for multiphase simulation October 5, 2016 at 10:38 am #2458 robin.trunkKeymaster Hi applous6, do you get an error message? Maybe the periodic boundary is colliding with some velocity boundaries what can lead to problems. Did you set the periodicity for all directions? Best Robin