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 12, 2016 at 2:10 pm #2345 lilianaxavierMember Hi,rnrnyou can use the slip boundary condition in a similar way as you use a velocity or pressure boundary conditions.rnYou can set as “”addSlipBoundary”” on the material number you desire to have this type of BC.rnrnBest regards.