New version of OpenLB was released. Download here OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Velocity-temperature coupling method without gravity › Reply To: Velocity-temperature coupling method without gravity January 8, 2025 at 10:26 am #9704 FBukreevKeymaster Dear MW, you can setthe gravity to 0 or copy this coupler without Boussinesq force. Best regards Fedor