Hello Daniel,
here all three commands are running fine and do what they should. It
looks like something is wrong with your installation and it is still
having the old element. Did you download version 7.0.0 directly from the
webpage or ran an update from a previous version? Perhabs you could try
to do a completely fresh installation of deal.II (i.e. by deleting or
renaming the current root directory). Hope this helps.
Best Regards,
Markus
Am 14.06.11 08:04, schrieb Daniel Brauss:
Hi all,
I have been reading up on the Nedelec element to use it
in an MHD problem, but I am having a little bit of trouble and
was hoping to ask a couple of questions. Specifically, I would
like to use the Nedelec element of first type of order k = 2.
I have dealii 7.0.0 installed. The questions I have are
1) In a scratch c++ file I have asked for the element by including the
file in " #include<fe/fe_nedelec.h> ". Using the command
FE_Nedelec<3> finite_element(1);
it looks like I get the lowest order Nedelec element of the first type
due to the number of degrees of freedom = 12 returned by
finite_element.dofs_per_cell;
But this seems to disagree with the detailed description on the webpage
http://www.dealii.org/developer/doxygen/deal.II/classFE__Nedelec.html#a8e6ff21bacb7ddf2e60075cff693b652
where the convention of Brezzi and Raviart is used and the command
FE_Nedelec<3> finite_element(0);
should give the lowest order element. However, this gives an error.
I was wondering why this might be?
2) I need the Nedelec element of first type and of order k=2, but when I ask
for this element with the command
FE_Nedelec<3> finite_element(2);
I get the error (the same error when 2 is replaced with 0) :
The violated condition was:
degree == 1
The name and call sequence of the exception was:
ExcNotImplemented()
I was wondering if this means that the Nedelec element of order 2
is not implemented? In an e-mail from Dr. Bangerth on deal.II version 7.0.0
it is said that Nedelec elements are now available to arbitrary order,
so I am confused.
Thanks for your time.
Daniel Brauss
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