- in expressions BCs in particular, there is various logic handling
  for if value/refValue/refGradient etc are found or not.

  Handle the lookups as findEntry and branch to use Field assign
  or other handling, depending on its existence.

STYLE: use wordList instead of wordRes for copy/filter dictionary

- exposed by the new embedded function handling.

  Requires local copies of dictionary content instead
  (similar to coded BCs handling)

BUG: incorrect formatting for expression function output

ENH: simpler copyDict version taking wordList instead of wordRes

- corresponds to the most common use case at the moment

ENH: expression string writeEntry method

- write as verbatim for better readability

- can be useful when extracting portions of larger field files

STYLE: adjust wording of age-warning

Henning Scheufler authored 4 years ago and Andrew Heather committed 4 years ago

   1) Implementation of the compressibleIsoInterFOam solver
   2) Implementation of a new PLIC interpolation scheme.
   3) New tutorials associated with the solvers

This implementation was carried out by Henning Scheufler (DLR) and Johan
Roenby (DHI), following :

\verbatim

Henning Scheufler, Johan Roenby,
Accurate and efficient surface reconstruction from volume fraction data
on general meshes, Journal of Computational Physics, 2019, doi
10.1016/j.jcp.2019.01.009

\endverbatim

The integration of the code was carried out by Andy Heather and Sergio
Ferraris from OpenCFD Ltd.

Resolves bug-report http://openfoam.org/mantisbt/view.php?id=1805

BUG: twoPhaseEulerFoam: removed multiple of the continuous phase fraction from force and heat transfer models

including two simple tutorial cases

This reverts commit c5bea524.

This reverts commit b18f6cc1.