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 17, 2020 at 9:46 pm #5034 mathiasKeymaster https://www.openlb.net/DoxyGen/html/index.html