OpenLB – Open Source Lattice Boltzmann Code › Forums › on Lattice Boltzmann Methods › General Topics › Gallium melt flow › Reply To: Gallium melt flow May 20, 2022 at 12:08 pm #6578 mathiasKeymaster ok, in that case – check the source of unstability (stop simulation if uMax>0.3 for the first time in the main loop and write results, output the velocity and locate where the great values orrur.