[Dune] bad grids??

[Dedner, Andreas]

Hi Marco.

I am getting a bit confused - there seams to be 2 issues here:
1) moving vertices added during refinement - there is a non interface method
    available for UG to do this and I would like to have something in the interface for this
    (perhaps some call back mechanism...)
2) You do not want to have hanging nodes and you want to use quads. I do not know if this
     is actually possible? I think by dividing an edge in 2d into three parts and elements into 9
     when can get conforming closures with quads but no idea how that would work in 3d....
     Why do you have a problem with elements having 5 intersections in your FV scheme?

Best
Andreas

PS: I hope I did not miss anything in the previous mails....
________________________________________
From: dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org [dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org] on behalf of Oliver Sander [sander at mi.fu-berlin.de]
Sent: 11 June 2012 14:02
To: dune at dune-project.org
Subject: Re: [Dune] bad grids??

Am 11.06.2012 14:51, schrieb Christian Engwer:
> On Mon, Jun 11, 2012 at 02:11:46PM +0200, Oliver Sander wrote:
>> Am 11.06.2012 12:59, schrieb Marco Cisternino:
>>> Hi Oliver and thank you for the quick reply, unfortunately I'm adapting
>>> an existing code that can manage only quadrilaterals.
>>> Using red-green would mean introducing triangles, isn't it? I think it
>>
>> Well UGGrid does red/green refinement even for quadrilateral grids,
>> but the closure does involve triangles.
>
> it is even possible to use hanging node refinement (you can disable
> the closure using some special parameters... I forgot which exactly).
> And then you could move the vertices by hand.
>
But then you get these 5-vertex elements.


> But you have to be aware of the license issues concerning UG.
>
> Ciao
> Christian
>
>> --
>> Oliver
>>
>>> would be the solution to my problem, but I need to think about something
>>> different.
>>> Cheers,
>>>
>>> Marco
>>>
>>>
>>> Il 11/06/2012 11:59, dune-request at dune-project.org ha scritto:
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>>>>     1. [#1000] Evaluate build system migration from autotools to
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>>>>     2. [#1000] Evaluate build system migration from autotools to
>>>>        CMake (Dune)
>>>>     3. [#1000] Evaluate build system migration from autotools to
>>>>        CMake (Dune)
>>>>     4. [#1000] Evaluate build system migration from autotools to
>>>>        CMake (Dune)
>>>>     5. [#1000] Evaluate build system migration from autotools to
>>>>        CMake (Dune)
>>>>     6. bad grids?? (Marco Cisternino)
>>>>     7. Re: bad grids?? (Oliver Sander)
>>>>     8. [#970] Unify typedefs -- XyzType vs. Xyz (Dune)
>>>>     9. Re: GMSH reader fails in reading the same file for
>>>>        ALUSimplexGrid<2, 3>   and not ALUSimplexGrid<3, 3>   (Sacconi, Andrea)
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