Ignore my question about projection. Somehow I thought I remembered that
the projection functions dont support nedelec elements in deal - my bad.
Am Donnerstag, 18. Januar 2018 18:57:06 UTC+1 schrieb Pascal Kraft:
>
> Thanks for your fast reply!
> About your first point: Yes, I currently use a FeSystem composed of two 3D
> Nedelec fes.
> The second point I agree with you. Setting the additional values should
> not be a problem since I know the analytical solution of the problem so
> this should not be a problem concerning sulvability of the system. However
> you are right, it should also not be necessary to set these values in the
> first place so I can just skip this part.
> As a kind of an extension to my first question: I have a function which
> computes the analytical solution for a given position. Is there a function
> to compute the best approximation for a given element type (like nedelec)?
> Again, thank you for your time,
>
> Kind regards,
> Pascal
>
> Am Dienstag, 16. Januar 2018 18:45:15 UTC+1 schrieb Wolfgang Bangerth:
>>
>> On 01/16/2018 01:41 AM, Pascal Kraft wrote:
>> > I am currently using a FeSystem composed of two 3D Fields (real and
>> > imaginary E-field) and I want to impose Dirichlet conditions of the
>> sort
>> > E(x,y,z) = E_{in}(x,y,z) on the input interface (in an xy-plane).
>> > Earlier the z-component had been 0 so I did not run into real problems
>> > and could use the project_boundary_values_curl_conforming_l2 function
>> > (for the x and y components) and my own code for the z-components
>> > (setting them 0 in the first cell layer). Now however I would like to
>> > impose different values on the z-component. Since my cells have
>> variable
>> > thickness in z-direction (i.e. hanging node constraints appear) I would
>> > like to use some library function for the interpolation.
>> > Are there any feasible solutions to this?
>> > Ideally I would like to keep using
>> > project_boundary_values_curl_conforming_l2 for the tangential
>> components
>> > and just add some code for the z-components.
>>
>> The question doesn't quite have enough information:
>> * Are you using Nedelec elements for the two fields?
>> * If the input face is in the xy-plane, and you are using a finite
>> element that is only curl-conforming (such as the Nedelec element),
>> isn't it correct that you can only prescribe *tangential* components for
>> boundary values? In other words, you cannot prescribe z-components
>> anyway.
>>
>> Best
>> W.
>>
>> --
>> ------------------------------------------------------------------------
>> Wolfgang Bangerth email: [email protected]
>> www: http://www.math.colostate.edu/~bangerth/
>>
>
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