New to LBM and OpenLB? Attend our upcoming one-week hands-on Spring School in Marseille/France from 19.05.2025 – 23.05.2025. 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 5:52 pm #4767 savisParticipant Sorry, the surface tension (gamma) would be 0.67 so the value of kappa would be 2.