OpenLB – Open Source Lattice Boltzmann Code › Forums › on Lattice Boltzmann Methods › General Topics › High Re Flows Calculation Fault › Re: High Re Flows Calculation Fault April 20, 2017 at 7:52 am #2608 mathiasKeymaster Periodic BC might be more stable. We also have free outflow conditions. Please have a look in the dogygen documentation. It is called “convection” BC and simular to the one paper of Junk form Konstanz. Best Mathias