The error message suggests that the Tria elements do not form a closed volume, there could be gaps. If this is due to unequivalanced nodes, you can sweep the nodes. If there exists a gap you need to check the surface mesh to make sure it is closed in order to generate the TET mesh.
The error message suggests that the Tria elements do not form a closed volume, there could be gaps. If this is due to unequivalanced nodes, you can sweep the nodes. If there exists a gap you need to check the surface mesh to make sure it is closed in order to generate the TET mesh.
