When I check the solute transport benchmark, I see two different vtu files for boundaries, upstream and downstream. After creating the geometry, I use msh2vtu.py file (given in the tutorial) to convert my gmsh file to vtu. But it only makes one single file for boundary (mesh_MICP_bondary.vtu)
I try to assign a physical group for the left boundary (Point 1) and right boundary (Point 2), but I get an error like this. How can I get two different files for the left (influent or upstream) and right boundary (effluent or downstream)?
You can also find the files in the attached zip file.
As I assumed mainly meshes in 2D and 3D, I thought OGS thinks so too, and was lazy about 1D meshes. The physical groups are cell (element) properties but for a boundary in 1D there is no difference between point (node) and cell (element) as it is just a point. So I have not yet worked this out, I will put it on my TODO list. As workaround I propose open boundary.vtu with paraview, extract one point save it as A.vtu and extract the other point, again save it as B.vtu and use these vtu-files.
