[Dune] Grid format for unstructured grids from GMSH files

Sacconi, Andrea a.sacconi11 at imperial.ac.uk
Thu Nov 24 12:50:29 CET 2011


Hi all,

thanks for your prompty answers.

Following your suggestions, I'm trying to use AlbertaGrid for creating a new grid, whose details are written in .msh file.
However, it seems that I'm misunderstanding how to use this gridtype.

I'd like to write:
	  
typedef Dune::AlbertaGrid<3,3> GridType;

but this error message appears:

dune_prova1_22nov2011.cc: In function ‘int main(int, char**)’:
dune_prova1_22nov2011.cc:29: error: expected initializer before ‘<’ token

Where am I wrong? Instead, if I wanted to define a structured grid (like in page 9, grid-howto), I'd do

typedef Dune::SGrid<3, 3> GridType;

and this line does not give any problem.

In the configuration process of DUNE, I set 

 --with-world-dim=3 \
 --with-alberta=/usr/local/alberta-2.0.1 \
 --with-alberta-dim=3
 
Any idea?
Thanks,

Andrea
__________________________________________________________

Andrea Sacconi
PhD student, Applied Mathematics
AMMP Section, Department of Mathematics, Imperial College London,
London SW7 2AZ, UK
a.sacconi11 at imperial.ac.uk

________________________________________
From: dune-bounces+a.sacconi11=imperial.ac.uk at dune-project.org [dune-bounces+a.sacconi11=imperial.ac.uk at dune-project.org] on behalf of Oliver Sander [sander at mi.fu-berlin.de]
Sent: 22 November 2011 21:59
To: dune at dune-project.org
Subject: Re: [Dune] Grid format for unstructured grids from GMSH files

Am 22.11.2011 20:42, schrieb Jö Fahlke:
> Am Tue, 22. Nov 2011, 16:56:20 +0000 schrieb Sacconi, Andrea:
>> I'm making my first tries, and I'm using .msh files I produced for my MSc thesis.
>> First mesh I'd like to reproduce is 3D, unstructured, with only tetrahedra. Since I'm in this first stage, parallelism is not required.
>
> Then you have two options: AlbertaGrid and ALUSimplexGrid.  Alberta doesn't

Well, for completeness: you could also use UG.  It is slightly more involved
to install, but the installation process is well documented and many people
have successfully done it.

best,
Oliver

> support parallelism and uses a bisection strategy when refining.  There are
> packages available for e.g. Debian (and they can probably be installed on
> Ubuntu without any problem).  ALUGrid splits a tet into 8 smaller tets when
> refining, and does support parallelism (in 3D).  There aren't any distribution
> packages that I know of, but it's source is available as a standard
> "configure;make;make install"-tarball, so it should be easier than UG.
>
> Bye,
> Jö.
>
>
>
>
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