[wwrfd]

Hi everyone,

I'm supposed to make a study on cylindrical shapes using Salome openFOAM coupling.
Problem is I want to make a structured mesh with boundary layers on it. I saw some threads talking about that, but there weren't making any reference to my problem. I understood the process to refine the mesh near the BC walls (I attached some pictures) but my geometry is made of several cylinders crossing each others and I had to use the boolean operation "fuse" to have only one solid that make the fluid volume.

At the intersections of the cylinders, the algorithm of quadrangle mapping doesn't work because I don't have 4 edges (which is logical unfortunatly...) so I wondered if there were a way to project the faces or to do a sketch on the main cylinder (the horizontal one) of the others cylinders to have 4 edges per face instead of using the boolean operation fuse that creates meshing problem (for structured mesh).
I hope I explained it the right way so everybody can understand the problem.

I attached some pictures of my geometry and a structured mesh with a "pseudo" boundary layer I managed to create on a simple cylinder.

Thank you for your replies.

Structuredmesh.jpg

solidbeforeBO.jpg

solideafterBO.jpg

shapeview.jpg