Hi everyone,
I am looking to modify the FE_Q element to have non-polynomial shape
functions. It looks like FE_Q_Base takes an argument of type
ScalarPolynomialBase<dim> (fe_q_base.cc: line 418).
I am looking at a 2D element and instead of 2D polynomial shape functions
like this:
N = (1 - ξ)(1 - η)
I would like to add some additional terms like this:
N = (1 - ξ)(1 - η) + ζ
where ζ changes at different quadrature points.
It seems that I would need to access the values of ζ before computing
fe_values, since the shape functions and their derivatives would be
dependent on ζ.
Any thoughts on how feasible this would be to implement?
Thanks for your input,
Alex
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