Hi Samuel,

maybe I am wrong but the scvf.boundaryFlag() returns the boundaryId
of AluGrid which is only properly defined if you are using a DGF grid file.
The CO2 test uses such a DGF file, which is why it works there.

Maybe having a look at the tests in test/io/gridmanager helps.

Best regards,
Martin


On 08.04.19 19:34, Samuel Scherrer wrote:
Hi Timo, Hi Bernd,

thanks a lot for your help.
I'm compiling the dune modules with the cmake.opts in the dumux
repository, which contains "-
DDUNE_GRID_EXPERIMENTAL_GRID_EXTENSIONS:BOOL=True" in "CMAKE_FLAGS", so
I assume that I don't need any additional changes.

The problem file in co2/implicit looks like what I need. However, when
using scvf.boundaryFlag() I always get the same value, 1, but when I
instead loop over all interfaces of the current element and use the
'getBoundaryDomainMarker'-function I do get the values I expect.

I'm using the gmsh mesh-format version 2.2 and ALUGrid. Do you know
what might be going wrong here?

Best regards,
Samuel



On Mon, 2019-04-08 at 18:09 +0200, Timo Koch wrote:
Hi Samuel,

as an addition to Bernd's answer, you might have to set
DUNE_GRID_EXPERIMENTAL_GRID_EXTENSIONS:BOOL=TRUE
for compiling dune-grid and the grid modules. I'm not sure if this is
still required.

Best wishes
Timo

On 08.04.19 17:37, Flemisch, Bernd wrote:
Hi Samuel,

I think that it is given by scvf.boundaryFlag(). Have a look at

https://git.iws.uni-stuttgart.de/dumux-repositories/dumux/blob/master/test/porousmediumflow/co2/implicit/problem.hh
Kind regards
Bernd



--
_______________________________________________________________

Bernd Flemisch                         phone: +49 711 685 69162
IWS, Universität Stuttgart             fax:   +49 711 685 60430
Pfaffenwaldring 61            email: be...@iws.uni-stuttgart.de
D-70569 Stuttgart            url: www.hydrosys.uni-stuttgart.de
_______________________________________________________________
Von: Dumux <dumux-boun...@listserv.uni-stuttgart.de> im Auftrag von
Samuel Scherrer <samuel.scher...@iws.uni-stuttgart.de>
Gesendet: Montag, 8. April 2019 17:30:26
An: dumux@listserv.uni-stuttgart.de
Betreff: [DuMuX] How to get intersections from scvf and element?
Hi Dumux people,

I'm currently trying to use a grid generated with gmsh and would
like
to set the boundaries based on BoundaryDomainMarkers.
I found that it's possible to access the boundary domain markers
via
the function 'getBoundaryDomainMarkers', which accepts either a
Intersection or a boundary segment index as argument.

How do I now get the intersection/boundary segment index when I
have a
given element and scvf, e.g. inside the 'neumann' function
(solution
dependent neumann boundary)?

Best regards,
Samuel

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