OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Particle Laden Flow › Reply To: Particle Laden Flow June 20, 2023 at 6:00 pm #7532 janParticipant Dear Henderson, Unfortunately, I don’t know your setup. However, I believe that the Δt and contact forces may be too large, which could cause problems like this. Best regards, Jan