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 › Defining Material Numbers › Reply To: Defining Material Numbers June 18, 2020 at 7:54 pm #5035 michael.gianfeliceParticipant I’m not sure if it is just my browser but that page is blank for me.