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[Pablo Suarez <question156430@xxxxxxxxxxxxxxxxxxxxx>]

Question #156430 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/156430

    Status: Answered => Open

Pablo Suarez is still having a problem:
Dear Evan,

       Thank you very much for your answer. Unfortunately
I did get any attachments. Could you sent the examples for the TE cutoff to
my personal
e-mail : suarep@xxxxxxxxx ? Thank you for your help and I will play with
example you send me.
Best wishes,

Pablo Suárez

Thank you very much.

On Sun, May 8, 2011 at 10:45 PM, Evan Lezar <
question156430@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Your question #156430 on DOLFIN changed:
> https://answers.launchpad.net/dolfin/+question/156430
>
>    Status: Open => Answered
>
> Evan Lezar proposed the following answer:
> Pablo,
>
> I have been using FEniCS for solving waveguide cutoff and dispersion
> problems, and can send you a few code samples if you like. In my problems I
> use homogeneous Dirichlet BCs, but this should not be too much of a problem
> to extend to the non-homogeneous case.
>
> As a start, I have attached a simple example for calculating the TE cutoff
> modes of a hollow rectangular waveguide. To extend this to the
> non-homogeneous case, you would have to use a non-zero expression when
> instantiating the DirichletBC class.
>
> Feel free to contact me if you have any questions.
>
> Regards
> --
> Evan Lezar
>
> Computational Electromagnetics Group
> Department of Electrical and Electronic Engineering
> University of Stellenbosch
> Stellenbosch
> South Africa
>
> www.evanlezar.com
>
> GoogleTalk: evanlezar
> Skype: evanlezar
>
>
> On Sun, May 8, 2011 at 12:11 AM, Pablo Suarez <
> question156430@xxxxxxxxxxxxxxxxxxxxx> wrote:
>
> > Question #156430 on DOLFIN changed:
> > https://answers.launchpad.net/dolfin/+question/156430
> >
> > Description changed to:
> > Hello,
> >
> >      I was wondering if anyone can answer this question.
> > I need to solve for the follow PDE:
> >
> >        \nabla \times \nabla E - k^2 E = 0
> >       (curl(curl(E)) - k^2 E = 0
> >
> > with BC   n \times E = F
> > E is a vector field
> > F is a vector field
> > k^2 is a constant (k^2 is not an eigenvalue)
> > this is in the interior of a 3D surface (presumably smooth)
> > n is the outward normal  to the surface.
> >
> > This is the cavity problem for Maxwell Equation's  with non-homgenous
> > Dirichlet BC.
> > How can I incorporate this condition into my code?
> > I have followed the example in undocumented demos curl curl. If anyone
> can
> > help it will be greatly appreciated.
> >
> > Best wishes,
> >
> > Pablo
> >
> > --
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> >
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>
> --
> If this answers your question, please go to the following page to let us
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>


-- 
Best regards,

Pablo U. Suarez
Ph. D Mathematics August 2009

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