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 › Heat transfer liquid-solid and heat conduction in solids › Reply To: Heat transfer liquid-solid and heat conduction in solids July 19, 2023 at 12:42 pm #7636 FBukreevKeymaster Dear Jijo, if you have only 1 cuboid there will be only iC=0. Best regards Fedor