[Gmsh] 2D meshing issue with the new gmsh (2.7.1)

[Ruth V. Sabariego]

With my up-to-date version, I still get the smooth result when the I let Gmsh to choose the mesh.
You can e.g. force it in your .geo file:

Mesh.Algorithm = 2; 
// 2D mesh algorithm (1=MeshAdapt, 2=Automatic, 5=Delaunay, 6=Frontal, 7=bamg, 8=delquad)

I get the second mesh when forcing algorithm 1, MeshAdapt.
The result you are getting is probably normal.

Regards,
Ruth

On 15 Apr 2013, at 07:57, Omid Mahabadi <omid.mahabadi at geomechanica.com> wrote:

> Dear Christophe and Gmsh team,
> I may have encountered a possible issue with the new Gmsh revisions (r15256 and r15299) or I may have to modify something in my geometry file for it to mesh properly again: after thoroughly examining my geo file and how it's been meshed in different versions of Gmsh, it appears that the characteristic lengths associated with the internal points are not been used for meshing in later revisions of Gmsh. I used to mesh the attached geometry file easily with Gmsh 2.5 UI or Gmsh r15203 non-interactive, resulting in a very nice and smooth graded mesh. However, in the later revisions (r15256 non-interactive or r15299 with the UI), the characteristic lengths of the internal points is ignored. I've attached 2 screenshots with the resultant meshes for your view.
> I have tried varying the characteristic lengths, but it seems that only those of the boundary or external points are used. Do you know what may be going wrong in my geometry file? Do I have to change something, for instance a meshing option, to force the mesh to use the specified mesh lengths? Or can this be an issue with the updates in Gmsh?
> 
> Thank you,
> Omid
> 
> -- 
> Omid Mahabadi
> Geomechanica, Inc.
> Tel: (647) 478-9767 x824
> 
> <open_pit_base_geom_no_internal_lines.geo><new_gmsh.png><old_gmsh.png>_______________________________________________
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—
Dr. Ir. Ruth V. Sabariego
University of Liege, Electrical Engineering and Computer Science
http://ace.montefiore.ulg.ac.be/







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