[Gmsh] refine existing mesh

[Johannes Töger]

Dear Christophe,

The new version of your reparametrization algorithm sounds very interesting
for our application. Is it possible for you to tell us a bit more about it?
What will it be capable of, and what is the approximate timeline for it?


—
Johannes Töger

Postdoctoral Research Scholar
National 7T Facility, Lund Biomedical Imaging Center
Department of Clinical Sciences Lund, Diagnostic Radiology
Lund University, Sweden

On Mon, Feb 12, 2018 at 9:41 PM, Christophe Geuzaine <cgeuzaine at uliege.be>
wrote:

>
>
> On 12 Feb 2018, at 15:42, Juan E. Sanchez <juan.e.sanchez at gmail.com>
> wrote:
>
> Hello,
>
> Unfortunately, I do not have the geometrical description.  Is there a way
> to convert the mesh to a geometrical description?
>
>
> No ; we are working on a new implementation of our “reparametrization”
> algorithm, which will allow you to do some of this, but it’s not ready
> yet...
>
>
> Regards,
>
> Juan
>
> On 2/12/18 1:21 AM, Christophe Geuzaine wrote:
>
> On 10 Feb 2018, at 22:06, Juan E. Sanchez <juan.e.sanchez at gmail.com <
> mailto:juan.e.sanchez at gmail.com <juan.e.sanchez at gmail.com>>> 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
> Free software: http://gmsh.info | http://getdp.info | http://onelab.info
>
>
>
> _______________________________________________
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>
>
> —
> Prof. Christophe Geuzaine
> University of Liege, Electrical Engineering and Computer Science
> http://www.montefiore.ulg.ac.be/~geuzaine
>
> Free software: http://gmsh.info | http://getdp.info | http://onelab.info
>
>
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>
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