[Paraview] Mixed Formulation FEM in Paraview

[Andy Bauer]

Hi,

Currently ParaView assumes that all field variables have the same
interpolation/shape functions for point data. You would have to either
throw out the higher order interpolation/shape functions or compute the
dofs for them for the lower order field approximation.

Regards,
Andy

On Tue, Dec 9, 2014 at 9:55 AM, Teo Ioannis <teojgor at gmail.com> wrote:

> I would like to ask if it is possible to display scalar, vector or tensor
> values at distinct nodes in a finite element mesh.
>
> To make things clearer, there exist finite element formulations where not
> all nodes have the same number of degrees of freedom. Consider the case of
> a 20 node hexahedral element. In a so called u-p formulation all 20 nodes
> have 3 displacement degrees of freedom (one for each x, y, z axis) but only
> the 8 corner nodes have pressure degrees of freedom.
>
> For this particular case, i know how to display the vector of
> displacements for all the nodes. But since only the corner nodes of each
> hexahedron have pressure degrees of freedom how can I instruct paraview to
> 'see' that only these nodes have the pressure scalar values and make the
> correct color interpolation?
>
> Thank you very much.
> Theofilos Manitaras
>
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