Files
OpenFOAM-12/etc
Henry Weller a7b8425690 dictionary: Added experimental "slash" syntax
A new optional "slash" scoping syntax is now provided which is more intuitive
than the current "dot" syntax as it corresponds to the common directory/file
access syntax used in UNIX, and avoids limitations of the "dot" (see below)
e.g.

internalField 3.4;

active
{
    type            fixedValue;
    value.air       $internalField;
}

inactive
{
    type            anotherFixedValue;

    value           $../active/value.air;
    anotherValue    $:active/value.air;

    sub
    {
        value           $../../active/value.air;
        anotherValue    $:active/value.air;
    }
}

"U.*"
{
    solver GAMG;
}

e.air
{
    // This does expand
    $U.air;
}

"#inputSyntax slash;" selects the new "slash" syntax.
"../" refers to the parent directory.
":" refers to the top-level directory.

The corresponding dictionary using the current "dot" syntax is

internalField 3.4;

active
{
    type            fixedValue;
    value.air       $internalField;
}

inactive
{
    type            anotherFixedValue;

    value           $..active.value.air;
    anotherValue    $:active.value.air;

    sub
    {
        value           $...active.value.air;
        anotherValue    $:active.value.air;
    }
}

"U.*"
{
    solver GAMG;
}

e.air
{
    // This doesn't expand
    $U.air;
}

Note that the "$U.air" expansion does not work in this case due to the
interference between the use of '.' for scoping and phase-name.
This is a fundamental problem which prompted the development of the new more
intuitive and flexible "slash" syntax.

The new syntax also allows a for planned future development to access entries
in directories in other files, e.g.

active
{
    type            fixedValue;
    value.air       $FOAM_CASE/internalFieldValues/value.air;
}

or

active
{
    type            fixedValue;
    value.air       :../internalFieldValues/value.air;
}
2019-07-09 16:45:07 +01:00
..
2016-02-10 20:49:04 +00:00

OpenFOAM Configuration

The main OpenFOAM settings are located in the parent etc/ directory. The bash and csh shells are supported and to configure OpenFOAM source etc/bashrc or etc/cshrc respectively which source the following files in the config.sh or config.csh respectively:

  • settings: core settings
  • aliases: aliases for interactive shells
  • unset: sourced to clear as many OpenFOAM environment settings as possible
  • mpi: MPI communications library settings
  • ensight: application settings for EnSight
  • paraview: application settings for ParaView
  • scotch: application settings for compiling against scotch
  • metis: application settings for compiling against metis 5

The config.*/example directories contains various example configuration files for the corresponding shell:

  • compiler: an example of fine tuning ThirdParty compiler settings
  • openmpi: an example of fine tuning openmpi settings for OpenFOAM
  • paraview: an example of chaining to the standard config/paraview with a different ParaView_VERSION
  • prefs: an example of supplying alternative site-defined settings