Dear gmsh developers, I'm trying to use gmsh to create a cube mesh with a surface separated in multiple entities: two concentric circles are inscribed into the top surface (square). The external circle comes from a 1D mesh that I merge to my geo script. The internal circle has been created only as a workaround since gmsh could not create the 2D mesh inside the 1D line (file circleLine1.mesh or circleLine2.mesh).
Small changes in the script, i.e. characteristic length, line1 or line2, small circle dimensions, etc., give different errors but none of these combinations seems to work. Also, in case the 2D mesh is correctly generated, the surface mesh quality is very bad in some points and the 3D mesh cannot be generated. I tried various options for the 2D and 3D mesh algorithms but none of them gives good results. What am I doing wrong? I send you a minimal example of my geo script and the 1D mesh I use to define the inscribed circle. Thank you in advance, bests, Elisa
circleLine2.mesh
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testGmsh.geo
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circleLine1.mesh
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