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|
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v1912 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
application potentialFoam;
startFrom latestTime;
startTime 0;
stopAt nextWrite;
endTime 1;
deltaT 1;
writeControl timeStep;
writeInterval 1;
purgeWrite 0;
writeFormat ascii;
writePrecision 6;
writeCompression off;
timeFormat general;
timePrecision 6;
runTimeModifiable true;
functions
{
error
{
name error;
type coded;
libs (utilityFunctionObjects);
codeEnd
#{
// Lookup U
Info<< "Looking up field U\n" << endl;
const volVectorField& U = mesh().lookupObject<volVectorField>("U");
Info<< "Reading inlet velocity uInfX\n" << endl;
scalar ULeft = 0.0;
label leftI = mesh().boundaryMesh().findPatchID("left");
const fvPatchVectorField& fvp = U.boundaryField()[leftI];
if (fvp.size())
{
ULeft = fvp[0].x();
}
reduce(ULeft, maxOp<scalar>());
dimensionedScalar uInfX("uInfx", dimVelocity, ULeft);
Info << "U at inlet = " << uInfX.value() << " m/s" << endl;
scalar magCylinder = 0.0;
label cylI = mesh().boundaryMesh().findPatchID("cylinder");
const fvPatchVectorField& cylFvp = mesh().C().boundaryField()[cylI];
if (cylFvp.size())
{
magCylinder = mag(cylFvp[0]);
}
reduce(magCylinder, maxOp<scalar>());
dimensionedScalar radius("radius", dimLength, magCylinder);
Info << "Cylinder radius = " << radius.value() << " m" << endl;
volVectorField UA
(
IOobject
(
"UA",
mesh().time().timeName(),
U.mesh(),
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
U
);
Info<< "\nEvaluating analytical solution" << endl;
const volVectorField& centres = UA.mesh().C();
volScalarField magCentres(mag(centres));
volScalarField theta(acos((centres & vector(1,0,0))/magCentres));
volVectorField cs2theta
(
cos(2*theta)*vector(1,0,0)
+ sin(2*theta)*vector(0,1,0)
);
UA = uInfX*(dimensionedVector(vector(1,0,0))
- pow((radius/magCentres),2)*cs2theta);
// Force writing of UA (since time has not changed)
UA.write();
volScalarField error("error", mag(U-UA)/mag(UA));
Info<<"Writing relative error in U to " << error.objectPath()
<< endl;
error.write();
#};
}
}
// ************************************************************************* //
|
