I apologize (to Michael Harmon and others who follow this thread) for not
writing back, promptly! This forum is great and must be used respectfully
-I apologize again! I dropped this thread for some time.
Thanks Michael for the suggestion to use Raviat-Thomas elements!
My dielectric constant i just a discontinuous step function across the
material interfaces.
/Erik
On Tuesday, March 29, 2016 at 6:08:47 PM UTC+2, Michael Harmon wrote:
>
> I had to do this same problem.
>
> The way to do this is to use a mixed finite element method with
> Raviart-Thomas elements as done in step 20. For electrostatics you should
> have two conditions across the interface:
>
> 1.) the jump in potential (phi) is continuous
> 2.) the jump in the displacement electric field (e_{i} grad(phi)) is
> continuous (which is what you wrote)
>
> Both interface conditions will automatically be satisfied weakly using the
> mixed method. The second constraint is satisfied by the Raviart-Thomas
> elements itself.
>
> Is your dielectric constant just a discontinuous step function or
> spatially variable within each subdomain?
>
>
>
> On Monday, March 28, 2016 at 8:37:36 AM UTC-5, Erik Svensson wrote:
>>
>> Thanks a lot for detailed answer!
>>
>> Indeed, I'm using the Kelly refinement.
>>
>> I would need to think more about what I would like to achieve.
>>
>> /Erik
>>
>>
--
The deal.II project is located at http://www.dealii.org/
For mailing list/forum options, see
https://groups.google.com/d/forum/dealii?hl=en
---
You received this message because you are subscribed to the Google Groups
"deal.II User Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
