Files
OpenFOAM-12/test/dictionary/testCalc
Henry Weller 441b60c70d functionEntries::calcEntry: Extended the functionality of multi-statement/multi-line #calc
If the code string is delimited by '#{...#}' multiple lines and multiple code
statements can be used to generate the entry using 'os << ...;'.  This is
equivalent to #codeStream but with a more compact syntax, e.g.

maxAngle        30;
nAngles         7;
Us              #calc
    const vector U($<vector>testCalc2!U);
    const int nAngles = $nAngles;
    const scalar angleStep = ($<scalar>maxAngle)/(nAngles - 1);
    List<vector> Us(nAngles);
    for(int i=0; i<nAngles; i++)
    {
        const scalar angle = degToRad(i*angleStep);
        Us[i] = transform(Ry(angle), U);
    }
    os << Us;

Note the 'os << Us;' statement which writes the data to the dictionary entry in
the same manner as #codeStream, this provides flexibility on how the data is
created and written.
2023-07-06 23:11:36 +01:00

71 lines
2.4 KiB
C++

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: dev
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
format ascii;
class dictionary;
object testCalc;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
a 1.1;
b 3.2;
c #calc "$a*$b";
// Special care is required for calc entries that include a division since
// "/" is also used as the scoping operator to identify keywords in
// sub-dictionaries. For example, "$a/b" expects a keyword "b" within a
// sub-dictionary named "a". A division can be correctly executed by using a
// space between a variables and "/", e.g.
c #calc "$a / $b";
// or bracketing the variable, e.g.
c #calc "($a)/$b";
s "field";
fieldName #calc "$<string>s + \"Name\" ";
// Additional include files for the #calc code compilation can be specified
// using the #calcInclude entry, e.g. if functions from transform.H are used
angleOfAttack 5; // degs
angle #calc "-degToRad($angleOfAttack)";
#calcInclude "transform.H"
liftDir #calc "transform(Ry($angle), vector(0, 0, 1))";
dragDir #calc "transform(Ry($angle), vector(1, 0, 0))";
// Calculate the magnitude of the velocity and turbulent kinetic energy
// where the velocity is looked-up from testCalc2
magU #calc "mag($<vector>testCalc2!U)";
k #calc "1.5*magSqr(0.05*$<vector>{${FOAM_CASE}/testCalc2!U})";
// If the code string is delimited by '#{...#}' multiple lines and multiple
// code statements can be used to generate the entry using 'os << ...;'.
// This is equivalent to #codeStream but with a more compact syntax.
#calcInclude "transform.H"
maxAngle 30;
nAngles 7;
Us #calc
#{
const vector U($<vector>testCalc2!U);
const int nAngles = $nAngles;
const scalar angleStep = ($<scalar>maxAngle)/(nAngles - 1);
List<vector> Us(nAngles);
for(int i=0; i<nAngles; i++)
{
const scalar angle = degToRad(i*angleStep);
Us[i] = transform(Ry(angle), U);
}
os << Us;
#};
// ************************************************************************* //