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Re: [Getfem-users] interpolated fem again
From: |
Yves Renard |
Subject: |
Re: [Getfem-users] interpolated fem again |
Date: |
Thu, 12 Jul 2007 13:12:19 +0200 |
User-agent: |
KMail/1.9.5 |
Le jeudi 12 juillet 2007 11:19, Andriy Andreykiv a écrit :
> Dear Yves,
>
> Thank you very much for your suggestion. Please don't spend more time
> on this problem then necessary to tell whether the idea I present below
> makes sense.
>
> Indeed I need a mass matrix between two vectorial FEM's.
> So, what I think I could do is to obtain this matrix between two scalar
> FEM's, defined on the same mesh and then populate it in such a way that it
> can be used as a mass matrix between two FEM's with target dimention 3.
> In here I would need to assume that if a scalar DOF's have a certain
> numbering on the nodes of the mesh, the vectorial numbering
> can be automatically obtained like this: if i is a number of a scalar
> DOF, then in vectorial 3D FEM the same number i will correspond to X DOF,
> i+1 to Y DOF and i+3 to Z DOF. Hence I could obtain my mixed mass matrix
> the same way I would obtain a standard (single mesh) vectorial mass matrix
> from a scalar one. Is that correct?
>
Yes, this is correct. Normally, the numeration of dof will correspond in that
sense.
Yves.
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Yves Renard (address@hidden) tel : (33) 04.72.43.80.11
Pole de Mathematiques, fax : (33) 04.72.43.85.29
Institut Camille Jordan - CNRS UMR 5208
INSA de Lyon, Universite de Lyon
20, rue Albert Einstein
69621 Villeurbanne Cedex, FRANCE
http://math.univ-lyon1.fr/~renard
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