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 › Thermal Channel Flow 2D › Reply To: Thermal Channel Flow 2D April 9, 2023 at 10:46 am #7378 mathiasKeymaster Dear Anas, which boundary conditions did you apply? There seems to be a problem.. Best Mathias