The SU2 mesh file format states that elements must have node numbers ("The final value is the element index given to each interior element in the mesh"). The NACA 0012 mesh does not have them, and thus doesn't follow the specification. See issue 52 for possible alternative resolution.
The SU2 mesh file format states that elements must have node numbers ("The final value is the element index given to each interior element in the mesh"). The NACA 0012 mesh does not have them, and thus doesn't follow the specification. See issue 52 for possible alternative resolution.