[Starcatcher]

hi ,

i am trying to learn gmsh. I have a 3d channel hsapes like a river. on the surfaces i need a srtuctured boundarly layer. how can i biuld it in gmsh. I would prefer to make it somehow automatised and not have to choose the cell numerb along each edge.


I tried the mesh->define->size fields. but probably i did something wring.


please help