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.

We iterate over all scvs of a fvElementGeometry like this
for (const auto& scv : scvs(fvGeometry))
This is closer to the way we speak "For each scv in all scvs of the fvElementGeometry do..."
and analogously to how we iterate over elements of a gridView.

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 Jul 05, 2016 and Timo Koch committed Nov 23, 2016

the flux var cache vector is now set specifically for box and cc methods

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

this method is now specialized by the boxlocaljacobian and
the cclocaljacobian

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

the boundary treatment is now performed after all the interior
fluxes have been calculated. This corresponds more to the previous
implementation and is assumend to be more correct for mixed BCs.

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

This class has not been used since many commits ago. It was time
to delete it.

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

The flux var cache is now specialized for the box and cc methods
and furthermore permits the binding of an element prior to flux calculations
in order to recycle data later in the flux calculations when the global
caching is disabled.

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

the local jacobian now also gets the global residual passed as
argument for the assemble routine and stores the values in it.

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

This commit introduces two things:
1. Renaming of the enableCache properties to enableGlobalCache.
The cache classes will also be used to store temporary data in case the
caching is disabled. Thus the properties should indicate that they
switch on a GLOBAL caching. The commit further changes the corresponding
properties set in the defaults.
2. The volume variables vector is now specialized for the box and cc
methods. This commit thus also introduces the moving of the volvarvector
file into the cc folder and renaming of the class