The artificial diffusion is added to the node_dof records.
It can be used in combination with materi_diffusion_minimum
to decide in an eulerian calculation where material is present and where not.
Initially set
to 0 at places where no material is
present, and set it to 1 at places where material is present.
The initialization needs to be done in the node_dof records.
The redistribution of diffusion is governed by the conservation law
where is the velocity in the direction of the space coordinate
.
Condition: the -materi differential group_type should be present.