Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › Bounceback boundaries(Physical and lattice coordinates) › Reply To: Bounceback boundaries(Physical and lattice coordinates) August 6, 2021 at 4:59 pm #5895 mathiasKeymaster Which example/setup are you talking about?