Mpfa contributed by DennisGlaeser

This commit affects all properties and member variables

This commit affects all properties and member variables

we now have the following levels of type tags:

- basic numerical model
- linear solver type tag
- discretization scheme-specific type tag
- physics-related type tag (e.g. pmflow)
- problem-specific type tag

The stencils are no longer used. Instead, we make use of the assembly map
in cc models, where needed. For the box method the stencils concept was not
necessary anyway.

Dennis Gläser authored Jul 28, 2016 and Timo Koch committed Nov 23, 2016

The DiscretizationMethods property is substituted by an enum
listing all the available methods. Using aliases to simplify
specializations of the method-specific classes.

(cherry picked from commit bf2d9555d79e428bc476bd7cab38d46d3547334e)

There are a restriction of the global vector obtained
by a localView call and then bound to an element.

The global object can create an empty temporary local object that
can be bound to an element/stencil. This is closer to the
current dumux-stable implementation and still allows to switch
between global caching (for smaller problems where memory is not an issue)
and local caching (variables are precomputed for each element assemble temporarily)

Works for cc and box (in 2d). Box needs some performance improvement,
probably when creating the box geometries. But also other parts
might be possbile to optimize.

Dennis Gläser authored Jul 05, 2016 and Timo Koch committed Nov 23, 2016

A new folder named discretization is introduced on the /dumux level.
In this folder there are all the geometry classes as well as vol vars, flux var cache
and physical laws (darcy, fick etc), since they could be possibly reused in decoupled
models and are not restricted to implicit models. NOTE: The fluxvariables and the flux
variables cache are still in the folder /porousmediumflow/implicit/. It is to be discussed
whether or not they should be moved into the discretization folder as well.

Dennis Gläser authored Jun 20, 2016 and Timo Koch committed Nov 23, 2016

Each discretization method (Box, CCTpfa, Mpfa etc) now has a corresponding
flag which is set as a property. This allows a specialization of the used
constitutive laws for the different methods. For a model it is thus no longer
necessary to define additional typetags for the different discretization methods.
On the problem level one can simply derive from the discretization method's typetag
and the model type tag. Additional method-dependend classes are automatically set via
the DiscretizationMethod property in the form of template specializations

TODO
* Box local residual
* Darcy and Fickean flux vars

Everything in our .hh files is defined within the namespace `Dumux`.
There were numerous occurrences of `Dumux::` qualifiers that were
unnecessary. Remove those occurrences. Necessary qualifications
remain, such as `typedef Dumux::H2O<Scalar> H2O;`.

improve documentation for 2pnc and 2pncmin model and add description for classes
rename modules (sequential) and reorder according to new structure (porousmediumflow...)

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@10284 2fb0f335-1f38-0410-981e-8018bf24f1b0

in the header amgbackend.hh. It is fully functional for both box and
cell-centered.


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@9893 2fb0f335-1f38-0410-981e-8018bf24f1b0

implicit branch: remove Dumux copies of PDELab backends, patching strangely seems to be the cleaner solution. Add constant local finite element backend to allow for unified treatment of box and cell-centered in the AMG backend.

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/branches/implicit@9851 2fb0f335-1f38-0410-981e-8018bf24f1b0