[Gmsh] Mesh and geometry edges do not coincide: flow over cylinder

[Deep Bandivadekar]

Hello,

Attached is a simple script for a fully structured "flow over cylinder" geometry. If we zoom in to the cylinder wall region, the mesh lines do not seem to coincide with the actual geometry. Why does it happen? How do I avoid this? The circles also look a bit jagged (as if a polygon) rather than smooth.

I did have a smooth nice mesh earlier but I reduced the overall dimensions a bit and this happened and now it won't go back to the same even if I use the original script. Meshed geometry with well conforming edges: https://drive.google.com/open?id=1tMSst0q8pRpWlJGP6KAj3pMzlnix9QR- (.msh file 57mb)

Can you please tell me where is the problem?

Thanks
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