OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › How to set a slip boundary. › Re: How to set a slip boundary. May 23, 2016 at 8:39 am #2364 robin.trunkKeymaster Hi,rnrnI think this could be the same problem discussed in the topic “”Question about Cavity2d Example”” recently started by frankgao. Probably the points where the boundary can’t be set happen to be on the overlap?rnrnBest regardsrnRobin