[mpnc] add an initial helper that makes the choice of the constraintsolver depending on present phases

Closes #1109

See merge request !3174

constraintsolver depending on your saturation

Add missing stuff at the top of files.

See merge request !3232

[fcdiamond] Add Navier-Stokes momentum model and tests

See merge request !3222

Co-Authored-By: Martin Schneider <martin.schneider@iws.uni-stuttgart.de>

Since we also have border entities in the parallel case, the settings are
likely similar as for Box from which we inherit from now. However,
the MPI parallel solvers are not tested/adapted yet.

Co-Authored-By: Martin Schneider <martin.schneider@iws.uni-stuttgart.de>

Co-Authored-By: Martin Schneider <martin.schneider@iws.uni-stuttgart.de>

This allows for an ad-hoc fix of the current known bug in multidomain,
that does not correctly account for residual evaluations at different
time levels in a time integration scheme.

[doc][doxygen] Doxygen reduce doxyerr.log file

See merge request !3224

Melanie Lipp authored 2 years ago and Timo Koch committed 2 years ago

[rename] Rename parameter of member function from domainId to domainI to be more consistent with the rest of the file.

Melanie Lipp authored 2 years ago and Timo Koch committed 2 years ago

[doc][doxygen] Deal with circumstance that doxygen does not want a smaller sign in documentation text.

[disc] Remove old enum Discretization method that had been deprecated

See merge request !3221

Use the tags from the DiscretizationMethods namespace

[pnm][util] Fix missing new line in openpnm2dgf's dgf writer

See merge request !3220

[ci][default] allow setting max_cxx_standard and add C++20 pipeline

Closes #1169

See merge request !3172

Replace call to copy_tree from distutils by copytree from shutil

See merge request !3227