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 › About ConvectionBC › Re: About ConvectionBC July 16, 2017 at 11:50 am #2663 mathiasKeymaster It all seems correct. Did you check the material numbers for the outflow area?