OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › correction for tutorial and question › Re: correction for tutorial and question September 14, 2017 at 8:58 am #2720 mgaedtkeKeymaster Hey Mamin, 0 pressure at the outlet is fine, I think, as this suppose to be your outflow condition. For the inlet to be at 100 Pa, you could set the pressureLevel to 90 Pa to achieve a pressure value of 100 Pa.