Hi there,
I was wondering if finite elements with anisotropic polynomial degrees are
possible in deal.II. As an example, for a 3D element, can we construct a
tensor product polynomial space of {1,x,y,z,xy,xz,yz, z^2,xz^2,yz^2}, i.e.,
order 1 in x- and y-directions and 2 in z-direction?
I was looking at, for example, constructors of FE_DGQ() class [1]. The
second constructor [2] takes an arbitrary vector of polynomials to build
the tensor product polynomial space. This is close to what I want but it
seems the argument can only be one-dimensional polynomials, which means
equal order on all dimensions.
Would really appreciate any insights and/or tips!
Best,
Greg
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[1] https://dealii.org/current/doxygen/deal.II/classFE__DGQ.html
[1]
https://dealii.org/current/doxygen/deal.II/fe__dgq_8cc_source.html#l00100
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