Comment 4 for bug 1131088
Revision history for this message
| Anders Logg (logg) wrote Re: [Bug 1131088] Re: New periodic bc fails for discontinuous elements | #4 |
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0e1f616
(Get the code!)
On Fri, Feb 22, 2013 at 07:26:16PM -0000, Garth Wells wrote:
>>
>> I'm not sure. The sensible thing would be to treat the periodic
>> boundary as a regular interior facet with correct jump terms. That
>> might be nice to have but might be difficult to implement. What's
>> needed is to define the two neighboring cells of those periodic facets
>> in the right way.
>>
> Eventually yes, but the immediate question is how should it behave
> now, i.e. error or no error. There may be cases using discontinuous p
> 0 that do not involve facet integrals (?).
Yes, but then the boundary dofs should not be matched, or maybe that's
not what you were suggesting. If the boundary dofs are matched then a
certain set of facets in the periodic mesh would be special. The
solution would be continuous along the periodic boundary but not
otherwise.
--
Anders