Hello,
I sent this message a while ago and things became clearer for me, but I am
still not able to create the spaces that I want. My goal is to create local
spaces that look like this: Q_{k-1,k,k} \times Q_{k,k-1,k} \times
Q_{k,k,k-1}, for k \geq 1.This is what I am currently doing:
- Created my own class of polynomials similar to the deal.II
class PolynomialsRaviartThomas, but with the polynomial degrees as
described above.
- Created my own class (FE_RTProj) for a finite element space similar to
the one called FE_DGRaviartThomas. This is a derived class from FE_DGVector
and the polynomial type is the one created in the item above.
My code does not even compile since I get error messages like: error:
undefined reference to 'FE_RTProj::FE_RTProj<2, 2>::get_name[abi:cxx11]()
const. The function get_name is defined in the FE_RTProj h and cc files (I
basically copied from FE_DGRaviartThomas). I am not sure if this is a C++
issue and/or if there is an easier way of doing this.
Any help is highly appreciated!
Best,
Giselle Sosa Jones
On Tuesday, August 31, 2021 at 9:59:55 a.m. UTC-5 Giselle Sosa Jones wrote:
> Thank you, Dr. Bangerth, I think these extra comments clarify it for me.
>
> Best,
> Giselle
>
> On Monday, August 30, 2021 at 8:15:16 p.m. UTC-5 Wolfgang Bangerth wrote:
>
>> On 8/28/21 4:52 PM, Giselle Sosa Jones wrote:
>> >
>> > I need to create a local space of polynomials in 3D of the form
>> > Q_{k-1,k,k} \times Q_{k,k-1,k} \times Q_{k,k,k-1}. This space is very
>> > similar to the DG Raviart-Thomas space, with the difference that the
>> > polynomial order of each component is one order lower in the
>> > corresponding direction. I was looking at the file
>> > polynomials_raviart_thomas.cc to get an idea of how to create them but
>> I
>> > am a bit lost. Can someone offer a suggestion?
>>
>> Giselle -- can you be specific about which part you have trouble with?
>> I've tried to improve the documentation of the key function of that
>> class a bit:
>> https://github.com/dealii/dealii/pull/12726
>>
>> Best
>> Wolfgang
>>
>> --
>> ------------------------------------------------------------------------
>> Wolfgang Bangerth email: bang...@colostate.edu
>> www: http://www.math.colostate.edu/~bangerth/
>>
>
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