OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Undesired velocity at corner when changing the contact angle in free energy › Reply To: Undesired velocity at corner when changing the contact angle in free energy February 12, 2020 at 11:25 am #4761 savisParticipant Also, since you only use 2 lattices, you should ensure that you do not include the arguments kappa3 and h3 in addFreeEnergyWallBoundary. This could potentially also cause problems.