CFD Online Discussion Forums - Questions on Vertex Normal for 2D Cases

Hi there,

I am wondering why in the function CPhysicalGeometry::SetBoundControlVolume, the vertex normal for 2D is calculated with:

Code:

vertex[iMarker][iVertex]->SetNodes_Coord(Coord_Elem_CG, Coord_Vertex);

I could be misunderstanding the code but my impression is that it should be:

Code:

vertex[iMarker][iVertex]->SetNodes_Coord(Coord_Edge_CG, Coord_Vertex);

Could there be something that I am missing there? Any help is greatly appreciated. The above code was found in: SU2/Common/src/geometry_structure.cpp.

Thanks
Joel