OpenLB – Open Source Lattice Boltzmann Code › Forums › on Lattice Boltzmann Methods › General Topics › Pressure boundaries in multicomponent flow › Re: Pressure boundaries in multicomponent flow July 29, 2015 at 6:08 pm #2218 mathiasKeymaster Hi,rnrnsuperGeometry.rename(0,1) renames all voxels with material number 0 to number 1. Yes, you should not have 0 anymore. Yes, that is basiaclly working as in 3d.rnrnBestrnMathias