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 › Question about ExternalTauEffLESBGKadvectionDiffusionDynamics › Reply To: Question about ExternalTauEffLESBGKadvectionDiffusionDynamics June 27, 2023 at 3:25 pm #7614 jflorezgiParticipant Hi Fedor, yes now I understand, thank you Jonathan