On 6/25/19 11:55 AM, Daniel Garcia-Sanchez wrote:
> According to Alexander Grayver, deal.II interface does not permit dynamic 
> constraints (that is, constraints, which depend on a cell orientation). This 
> problem does not seem easy to solve.

That's only partly true. The DoFTools::make_hanging_node_constraints() class, 
and the interface it uses to the FiniteElement class, can not deal with such 
constraints. It assumes that the constraints have the same form on each cell 
with a hanging node.

But one doesn't have to go through this function. One could just as well write 
a function that is specific to the FE_NedelecSZ element and that computes 
these kinds of constraints and puts them into AffineConstraints. I've done 
that for other elements before, though I'm not sure there is an example in 
deal.II itself. I'd be happy to provide my code as an example, though.

Best
  W.

-- 
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Wolfgang Bangerth          email:                 [email protected]
                            www: http://www.math.colostate.edu/~bangerth/

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