[johanesp]

Hello,

I am generating a mesh for a internally ribbed tube. I first make a 2D mesh of the cross section, and then extrude it with rotation afterwards. I am now working on adding a boundary layer mesh to the walls, but are facing some problems at the ribs.


The mesh is hexagonal, and the domain is structured in blocks. The image "noLayers.png" shows the mesh at one of the ribs, without any layers added.
After using the "Viscous Layers 2D" hypothesis, it looks like image "withLayers.png".



How can I avoid this behaviour? I do not want the boundary layer to go through the single vertex at the corner, but rather evenly go around the corner, like I have tried to sketch in "desiredLayers.png". The .hdf-file is too large to upload here, let me know if you want it.


I hope someone can help me out.



The full domain is shown i "overview.png" (the red box shows where the two other images are taken).