How did you calculate the L2 and H1 norms? I found "correct" convergence
for a similar 1D problem when calculating the norms "by hand" (using
Gauss integration), whereas the norms calculated using "gf_compute" from
the scilab interface showed a larger convergence rate.
Maybe "gf_compute" (which callsgetfem::asm_L2_normor dasm_H1_norm) does
not use the necessary order of integration?
Kind regards,
Thomas
On 16.02.2016 09:59, Yves Renard wrote:
Dear Yassine,
Superconvergence phenomena are quite common when a structured mesh is
used. If you use the option "MESH_NOISED", this should (unfortunately
!) disapear.
Best Regards,
Yves.
Le 15/02/2016 15:01, Yassine ZAIM a écrit :
Hi,
I want to ask you if someone has already solved the laplacian problem
that exists in the tests directory with the Q_1 element in 2
dimension. Because I find the order of convergence equal to "2" for
the L2 and H1 norme. what is not normal.
Best regards.
Bonjour,
S.v.p j'aimerais savoir si quelqu'un de vous a déjà testé le problème
de laplacian qui exist dans la répertoire des tests avec l'élément
Q_1 en dimension 2. J'ai testé ça et je trouve le même ordre pour les
deux norme L2 et H1 (Ordre(L2) = Ordre(H1) = 2). Ce qui contredit la
théorie.
Merci d'avance pour vos réponse.
Cordialement.
--
*ZAIM Yassine *
*PhD Student in Applied Mathematics*
*
*
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Yves Renard ([email protected]) tel : (33) 04.72.43.87.08
Pole de Mathematiques, INSA-Lyon fax : (33) 04.72.43.85.29
20, rue Albert Einstein
69621 Villeurbanne Cedex, FRANCE
http://math.univ-lyon1.fr/~renard
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