[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Getfem-users] quadratic mesh, step 2
From: |
Edouard Oudet |
Subject: |
Re: [Getfem-users] quadratic mesh, step 2 |
Date: |
Mon, 31 Dec 2018 18:44:30 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 |
Dear Yves,
Thanks a lot for your answer, that's perfectly clear now.. and works!
One more question: working on triangulated (curved) surface in R^3, I am
interested to evaluate the gradient of a fem function at some point of
this curved mesh. When my mesh was flat I used to build a model and call
the interpolation of "Grad_u" on my mesh at a point P which was inside
of the mesh.
Now that the mesh is curved, it is more tricky to produce a point which
is exactly on the curved mesh like, for instance, the center of a curved
triangle. Here are my (I hope last) questions:
1) Is it possible to generate points inside of a curved convex cell
described by a mesh?
2) How to interpolate the gradient at these points. Does the same
procedure work even if the point is never exactly on the curved mesh ?
Thanks a lot for your work and Happy new Year !!!
Best,
Edouard.
Le 29/12/2018 à 20:47, Yves Renard a écrit :
Dear Edouard,
The point ordering is the same that the corresponding fem. You can see the dof
ordering of fem in the page
http://getfem.org/userdoc/appendixA.html
And yes, of course, it is possible to also mesh curved surfaces in 3D.
Best regards,
Yves
----- Original Message -----
From: "EDOUARD OUDET" <address@hidden>
To: "getfem-users" <address@hidden>
Sent: Saturday, December 29, 2018 8:05:04 PM
Subject: [Getfem-users] quadratic mesh, step 2
I answer to the first part of my question: curved mesh seem to be
implemented regarding examples in the tests/meshes folder. Great!!
My remaining questions are:
1) How/where is defined the ordering point sequence which defines a
curved convex cell in a getfem-mesh file?
2) curved mesh seem to be implemented in 2D, 3D but is it also the case
for surfaces (triangulation in 3D)?
Thanks!
--
Edouard Oudet : http://www-ljk.imag.fr/membres/Edouard.Oudet/
IMAG - Bureau 164
700 avenue Centrale
38400 Saint Martin d'Hères
+33 (0)4 57 42 17 71 (office LJK)
+33 (0)4 79 68 82 06 (home)