Re: [Getfem-users] User defined basis functions

[Yves Renard]

Dear Tore G. Halvorsen,

May be you could use the reduction mecanism of the mesh-fem object. The mesh_fem object define a finite element method. There is a mecanism which allows to add a linear tranformation on a basic method, for instance to define no basis function as linear conbination of the ones of the basic method. Of course, it is up to you to define the corresponding reduction matrix.

Yves.

Le 19/06/2012 19:11, Tore G. Halvorsen a écrit :

Hello!

I am going to implement a convection-diffusion equation, and I am considering using getfem++ with a python interface. The catch is that we are going to upwind the test-space, hence we need to be able to define the basis functions in the test space according to the upwinding. These are not standard basis functions, but rather linear combinations of basis functions on a finer mesh.

So, is it possible to user define the basis functions given a mesh and degrees-of-freedom?

Best regards

Tore G. Halvorsen

_______________________________________________
Getfem-users mailing list
address@hidden
https://mail.gna.org/listinfo/getfem-users

-- 

  Yves Renard (address@hidden)       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

---------