OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › HLBM boundary settings › Reply To: HLBM boundary settings September 10, 2021 at 9:34 am #5968 janParticipant Hello, If you check, for example, the hlbmDynamics3D.hh (e.g., this), you can see an old model. However, this model most likely does not work out of the box. Additionally, it should only work for spheres and straight walls (it’s Hertz-Mindlin-based). Cheers, Jan