Hello,
Unfortunately, I do not have the geometrical description. Is there a
way to convert the mesh to a geometrical description?
Regards,
Juan
On 2/12/18 1:21 AM, Christophe Geuzaine wrote:
On 10 Feb 2018, at 22:06, Juan E. Sanchez <[email protected]
<mailto:[email protected]>> wrote:
Hello,
I have an existing msh file, and a pos file containing a background
mesh. Is there a script example showing how to use these files to
create a refined mesh using the background field?
Start from the geometrical description (not the mesh): this way Gmsh
will be able to place the new vertices correctly, i.e. on the CAD
gmsh -3 test.geo -bgm test.pos
CG
Using
gmsh -3 test.msh -bgm test.pos
results in a mesh where there is the same number of nodes and
elements, but it appears that the physical entity number is lost:
last element in original file:
36210 4 3 15 15 0 5786 5791 5792 5800
last element in new file:
36210 4 2 0 15 2603 5822 2604 2605
Now all of the mesh elements belong to the same physical entity, 0.
If I perform a "refine by splitting" in the gui, the physical entity
information is maintained:
266256 4 2 15 15 42825 10009 41452 9710
The file is a 3d tetrahedral mesh, and it also contains triangular
surfaces to impose boundary conditions.
Regards,
Juan
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine
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