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 › Create the mouth shape inlet › Reply To: Create the mouth shape inlet November 7, 2024 at 8:58 am #9496 AdrianKeymaster Can you expand on those difficulties? Did you try the STL based approach I suggested?