[Gmsh] Avoid Mesh refinement at coast

[Ivano Barletta]

Dear all


I'm trying to mesh a basin for my Finite Element ocean model.

I'm forcing the mesh by means of a postview file, that has

almost all constant values apart from some areas where I need

refinement because of bathymetry.


I've seen that, even where the postview is constant, the 2D

mesh that I get is refined in correspondence of coast boundaries,

and this is what I do NOT want. It is like postview is ignored at coast.


I've seen that the behaviour is different between physical lines and

normal lines. At physical boundaries the grid that I get is evenly spaced,

like I expect.

Is there a way to make gmsh treat all boundaries like physical?


I've tried several options for the element size but in vain, I alway get

a refinement at coastlines even though the postview is constant.


Thanks,

Ivano


P.S. I'm using 2.13.2 version