[Gmsh] topography issues

[Octavio Castillo Reyes]

Yes, thank you!

This will be very useful to me. I will try to apply it to a real case and I
will tell you

Best regards

O.

On Tue, Sep 25, 2018 at 1:04 PM Riad HASSANI <Riad.Hassani at unice.fr> wrote:

> Hi Octávio,
> I'm not sure I understood your question correctly.
> Is that the kind of thing you want to do? (if yes, the procedure works
> well):
> Best,
> Riad
>
> Le 21 sept. 2018 à 12:52, Octavio Castillo Reyes <ocastilloreyes at gmail.com>
> a écrit :
>
> Dear all,
>
> I'm interested too. My domains are composed 3, 4 or 5 materials (maybe
> more) where each interface might include a topography. For instance, do you
> know if is possible include another layer to the model proposed by Riad
> Hassani?
>
> Any idea?
>
> Best regards
>
> O.
>
> On Fri, Sep 21, 2018 at 12:37 PM Riad HASSANI <Riad.Hassani at unice.fr>
> wrote:
>
>> Hi Stephanie,
>>
>> the only trick I had found at the time is in three steps (there may be
>> more direct solutions, if so, I'm interested!):
>>
>> 1) mesh only the "skin" of your domain (2D mesh), save it in a .msh file
>> 2) move the nodes of the surface to match with your topography (use an
>> external program that reads the .msh, interpolates the topography on the
>> appropriate faces and rewrites your .msh).
>> 3) in a .geo file, merge this new .msh, define the volume and then mesh
>> it (3D mesh) (for example, if the initial domain has 6 faces : Merge
>> "skin_modified.msh"; Surface Loop(1) = {1,2,3,4,5,6}; Volume(1)={1}; )
>>
>> Best,
>>
>> Riad
>>
>>
>> Le 21 sept. 2018 à 02:12, Stephanie Jarvis <Stephanie.Jarvis at colorado.edu>
>> a écrit :
>>
>> Hello,
>>
>> Can gmsh can handle topography? I see this has been asked several times
>> but I can't find a resolution. I have surveyed grid points from a hillslope
>> surface that I need to create a 3D mesh for (top of the box is the
>> hillslope topography, bottom is flat extending into the surface). I've
>> tried embedding the points into a surface I create around them, using Point
>> In Surface, but the points mesh as holes (if they're below that surface) or
>> in the air by themselves (if they're above)--there is no interpolation
>> between them. I've also tried several variations of lines and splines
>> connecting the points, but I can't get that to mesh successfully.
>> Plugin(Tetrahedralize) looks promising, but it's unclear to me how to use
>> it--is it possible to get a "View" out of a bunch of points?  Or do I need
>> to create an interpolated surface outside of gmsh and bring that in to mesh?
>>
>> Thank you!
>> Stephanie
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>>
>>
>> -----------------------------------------------------------------
>> Riad HASSANI
>> GéoAzur
>> Université Nice-Sophia Antipolis
>> 250 rue Albert Einstein
>> Sophia Antipolis
>> 06560 Valbonne - France
>> tel. : 33 (0) 4 83 61 86 71 / 33 (0) 4 92 07 65 89
>>
>>
>>
>>
>>
>> _______________________________________________
>> gmsh mailing list
>> gmsh at onelab.info
>> http://onelab.info/mailman/listinfo/gmsh
>>
> <PastedGraphic-1.tiff><PastedGraphic-1.tiff>
> _______________________________________________
> gmsh mailing list
> gmsh at onelab.info
> http://onelab.info/mailman/listinfo/gmsh
>
>
> -----------------------------------------------------------------
> Riad HASSANI
> GéoAzur
> Université Nice-Sophia Antipolis
> 250 rue Albert Einstein
> Sophia Antipolis
> 06560 Valbonne - France
> tel. : 33 (0) 4 83 61 86 71 / 33 (0) 4 92 07 65 89
>
>
>
>
>
>
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