### Avoiding Subdivision of the edges when meshing a surface

Posted:

**Sun Mar 06, 2016 1:59 am**Hi all,

I'm currently having difficulties with meshing the interior of a tunnel (attached). In particular, 2 issues arise:

1. So far I have tried with unstructured meshes in case the is no way to structure the mesh. The problem is that after I input the points and lines and create a surface, at the time when I mesh the surface, the program automatically creates another node in the edge of the surface. I attach pictures. As you can see, the new extra node lies on one side of the lining, whilst on the other side there is no extra node.

Is it possible to avoid this? For my problem It is imperative that the mesh does not contain any nodes on the edges that are not original points. In other words, I would like to impose that the nodes at the edges be only the points of the geometry. Any help is appreciated.

2. Is it possible to obtain a structured mesh with this geometry? I have thought about it long time and I can't seem to be able to do it. Any guidance on subdivision or whatever method would be appreciated.

Regards.

I'm currently having difficulties with meshing the interior of a tunnel (attached). In particular, 2 issues arise:

1. So far I have tried with unstructured meshes in case the is no way to structure the mesh. The problem is that after I input the points and lines and create a surface, at the time when I mesh the surface, the program automatically creates another node in the edge of the surface. I attach pictures. As you can see, the new extra node lies on one side of the lining, whilst on the other side there is no extra node.

Is it possible to avoid this? For my problem It is imperative that the mesh does not contain any nodes on the edges that are not original points. In other words, I would like to impose that the nodes at the edges be only the points of the geometry. Any help is appreciated.

2. Is it possible to obtain a structured mesh with this geometry? I have thought about it long time and I can't seem to be able to do it. Any guidance on subdivision or whatever method would be appreciated.

Regards.