[Dune] Are there hanging nodes in Alugrid

[Carsten Gräser]

Hi,
Am 25.06.2010 15:05, schrieb Oliver Sander:
> Hi,
> UGGrid does also do refinement with hanging nodes, if you call
> grid.setClosureType(NONE);
> It will even allow arbitrary levels of non-conformity, if you happen
> to need that.
...and for the sake of completeness:
With this flag set UG will not control the level of non-conformity.
So if you only want hanging nodes up to a certain level (e.g. for
reasonable approximation with conforming FE spaces) you have to
control this yourself.

Regards
Carsten

> Best,
> Oliver
> 
> Am 2010-06-25 14:35, schrieb Andreas Dedner:
>> Hi,
>> alugrid will refine that tet and no other one. In general: it
>> introduces hanging
>> nodes but only allows one level of non-conformity, So if you refine
>> your tet in the
>> middle a second time then some neighboring elements will also be refined.
>> Best
>> Andreas
>>
>> On 06/25/2010 02:24 PM, Aleksejs Fomins wrote:
>>> Dear Dune,
>>>
>>> We plan to implement adaptive tetrahedron refinement for our
>>> electromagnetic solver (HADES3D).
>>> We currently use alugrid-1.22 and the question is as follows:
>>>
>>> If we have a large tetrahedral mesh and we decide to refine 1
>>> tetrahedron in its middle,
>>> will alugrid refine only that element creating hanging nodes or do
>>> something else?
>>>
>>> Kind regards,
>>> Aleksejs Fomins
>>>
>>> Paul Scherrer Institut