[Getfem-users] normal source term brick

[Nicolò Cambiaso]

Dear GetFem users,

I'm trying to apply a normal boundary condition, using the command

gf_model_set(model M, 'add normal source term brick', mesh_im mim,string varname, string dataname, int region),

using matlab interface.

and I previously defined the components as follows:
mim = gf_mesh_im( mf, IT); 

            IT = gf_integ('IM_TETRAHEDRON(1)')

            mf = gf_mesh_fem(Mesh_M, 3); 

                        Mesh_M is a cube, [0,1]x [0,1]x [0,1] 

string varname is 'ut', and it was defined as: gf_model_set(md, 'add fem variable', 'ut', mf);  (md is the model).

but the problem is the "string dataname".  The dataname was initialized by

   gf_model_set(md, 'add initialized data', 'dataname', Data);

and previously Data was defined as a 3xN matrix, where 3 is the dimension of the vectors (3D). Hoping right now that everything is correct, what is N ??

Because it's not the number of degrees of freedom of mf, as i thought at the beginning.

Thank you very much,

Have a nice day

Nicolò Cambiaso