Re: [Getfem-users] Higher order triangular elements

[Andriy Andreykiv]

Dear Yousef,

From what I know what you can do is to mesh your model with 

elements of second order, import the mesh into Getfem and assignt the interpolation

to the order you desire. Hence, you'll have geometric transoformation of order 

two (for second order triangles it will be GT_PK(2,2)), 

while approximation order as high as you desire, by setting 

your_mesh_fem.set_finite_element(getfem::fem_descriptor('FEM_PK(2,3) ');   //for order 3 triangles, for example

But that's only if you think you can approximate your geometry well enough by order two.

I hope this helps.

Best regards,

                       Andriy

On 10 April 2012 06:18, Yousef Elkurdi <address@hidden> wrote:

Hello,

I am a new for Getfem++ and I am happy with its results.  I would
appreciate your help in elaborating for me the method to generate
higher order FEM for triangular elements after importing meshes from
Gmsh.  I use Gmsh to produce my meshes of triangular elements in 2D. I
then use the import_mesh function to process it by getfem++.  However,
import_mesh does not process gmsh meshes of order 3 and above.  Is
there an alternative way to increase the order using Lagrange elements
from within Getfem++ after importing the mesh from Gmsh?

Thank you,
Yousef

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