OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › [BlockGeometryStatistics3D] WARNING: no discreteNormal is found › Reply To: [BlockGeometryStatistics3D] WARNING: no discreteNormal is found January 17, 2022 at 12:28 pm #6250 AdrianKeymaster How do you handle the walls? In the fourth screenshot it looks as if material 1 is directly neighbored by material 0? What is assigned to material 2?