ENH: turbulenceFields: add const specifier to compressible func

Minor clean-up

Hot fixes for v2106

See merge request !474

ENH: Adding subMesh option to momentumError and div FOs

See merge request !463

sergio authored 3 years ago and Mattijs Janssens committed 3 years ago

1) Adding subMesh capabilities to momentumError and div FOs.
	- A subMesh is created from cellZones.
	- The operators (div, etc) are only calculated in the subMesh.

2) Optionally, halo cells can be added to the cellZones.

3) New helper class to handle the subMesh creation and field mapping.

TUT: multiphase: replace boatAndPropeller with rigidBodyHull

See merge request !473

ENH: less cryptic error message in surfaceWriters::vtkWriter

- fall back to nFields=1 and report the problem.

- add setter/getter methods for the zone selection

- construct for multiple zone selection

- support explicit zone ids instead of name matcher

- add setter/getter methods for number of grow/shrink steps,
  which allows reuse of the same object.

- remove the lower input hard-limit of 1 step, to allow definition of
  a no-op filter.

- drop early exit from grow/shrink cycle (potential parallel issues).

CONFIG: set API level to 2106 in ramp-up for release

- previously a function (unlike the csh version) but since bashrc and
  setup have been split -> replace with inline definition

STYLE: formatting/wording for openfoam starters

TUT: simplify controlDict modification, add default substitution

ENH: accept '/' for end-of-options terminator (etc/openfoam)

- makes the application or service more apparent.
  * eg.  /usr/bin/openfoam / blockMesh
  * vs.  /usr/bin/openfoam -- blockMesh

  Accept lone '-' as the end-of-options terminator, as per bash

- Adjust handling of openfoam '-c' option to flag that a command-string
  will appear, but continue with option parsing.
  Consistent with bash definition.

- in the 'auto' mode (now the default), it will use cleanCase and also
  remove the 0/ directory if a 0.orig/ directory also exists.

  This corresponds to a frequent idiom and can be used quite safely
  for most cases.

ENH: add -serial / -parallel preference for foamRunTutorials

- adjust commented-out evaluation to avoid warnings.

  With code like this
  ```
  #if 0
  nxin    #eval{ round($nxin / 5) };
  #endif
  ```

  The handling of the "#if 0 / #endif" clause uses the plain ISstream
  parser to tokenize. This means that the "round(" is parsed as a word
  with a mismatched closing ')', whereas the "#eval" parser will slurp
  everything in until the closing brace and send it off as a string
  to the expression parser.

STYLE: PDRFOAM End of Program was inconsistent with other applications

See merge request !447