New to LBM and OpenLB? Attend our upcoming one-week hands-on Spring School in Heidelberg/Germany in March 2024 OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › LBM turbulence › Reply To: LBM turbulence February 22, 2023 at 12:13 pm #7221 FBukreevKeymaster You can also look into examples/laminar/cylinder3d. This indicator just enlarges the stl geometry to lattice points depending on cell size.