age.C

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License
    This file is part of OpenFOAM.
 
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#include "age.H"
#include "fvmDiv.H"
#include "fvmLaplacian.H"
#include "fvModels.H"
#include "fvConstraints.H"
#include "momentumTransportModel.H"
#include "zeroInletOutletFvPatchField.H"
#include "wallFvPatch.H"
#include "zeroGradientFvPatchField.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
    defineTypeNameAndDebug(age, 0);
    addToRunTimeSelectionTable(functionObject, age, dictionary);
}
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
Foam::wordList Foam::functionObjects::age::patchTypes() const
{
    wordList result
    (
        mesh_.boundary().size(),
        zeroInletOutletFvPatchField<scalar>::typeName
    );
 
    forAll(mesh_.boundary(), patchi)
    {
        if (isA<wallFvPatch>(mesh_.boundary()[patchi]))
        {
            result[patchi] = zeroGradientFvPatchField<scalar>::typeName;
        }
    }
 
    return result;
}
 
 
bool Foam::functionObjects::age::converged
(
    const int nCorr,
    const scalar initialResidual
) const
{
    if (initialResidual < tolerance_)
    {
        Info<< "Field " << typeName
            << " converged in " << nCorr << " correctors\n" << endl;
 
        return true;
    }
    else
    {
        return false;
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::functionObjects::age::age
(
    const word& name,
    const Time& runTime,
    const dictionary& dict
)
:
    fvMeshFunctionObject(name, runTime, dict)
{
    read(dict);
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::functionObjects::age::~age()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::functionObjects::age::read(const dictionary& dict)
{
    phiName_ = dict.lookupOrDefault<word>("phi", "phi");
    rhoName_ = dict.lookupOrDefault<word>("rho", "rho");
    schemesField_ = dict.lookupOrDefault<word>("schemesField", typeName);
    solverField_ = dict.lookupOrDefault<word>("solverField", typeName);
    diffusion_ = dict.lookupOrDefault<Switch>("diffusion", false);
    tolerance_ = dict.lookupOrDefault<scalar>("tolerance", 1e-5);
 
    return true;
}
 
 
Foam::wordList Foam::functionObjects::age::fields() const
{
    return wordList{phiName_, rhoName_};
}
 
 
bool Foam::functionObjects::age::execute()
{
    tmp<volScalarField> tage
    (
        new volScalarField
        (
            IOobject
            (
                typeName,
                time_.name(),
                mesh_,
                IOobject::READ_IF_PRESENT,
                IOobject::AUTO_WRITE,
                false
            ),
            mesh_,
            dimensionedScalar(dimTime, 0),
            patchTypes()
        )
    );
    volScalarField& age = tage.ref();
 
    const word divScheme("div(phi," + schemesField_ + ")");
 
    const int nCorr =
        mesh_.solution().solverDict(solverField_)
       .lookupOrDefaultBackwardsCompatible<label>
        (
            {"nCorrectors", "nCorr"},
            5
        );
 
    // Set under-relaxation coeff
    scalar relaxCoeff = 0.0;
    if (mesh_.solution().relaxEquation(solverField_))
    {
        relaxCoeff = mesh_.solution().equationRelaxationFactor(solverField_);
    }
 
    const Foam::fvModels& fvModels(Foam::fvModels::New(mesh_));
    const Foam::fvConstraints& fvConstraints
    (
        Foam::fvConstraints::New(mesh_)
    );
 
    const surfaceScalarField& phi =
        mesh_.lookupObject<surfaceScalarField>(phiName_);
 
    if (phi.dimensions() == dimMass/dimTime)
    {
        const volScalarField& rho =
            mesh_.lookupObject<volScalarField>(rhoName_);
 
        const word laplacianScheme("laplacian(muEff," + schemesField_ + ")");
 
        tmp<volScalarField> tnuEff;
        if (diffusion_)
        {
            tnuEff = mesh_.lookupType<momentumTransportModel>().nuEff();
        }
 
        for (int i=0; i<=nCorr; i++)
        {
            fvScalarMatrix ageEqn
            (
                fvm::div(phi, age, divScheme) == rho + fvModels.source(rho, age)
            );
 
            if (diffusion_)
            {
                ageEqn -= fvm::laplacian(rho*tnuEff(), age, laplacianScheme);
            }
 
            ageEqn.relax(relaxCoeff);
 
            fvConstraints.constrain(ageEqn);
 
            if (converged(i, ageEqn.solve(solverField_).initialResidual()))
            {
                break;
            };
 
            fvConstraints.constrain(age);
        }
    }
    else
    {
        tmp<volScalarField> tnuEff;
        word laplacianScheme;
 
        if (diffusion_)
        {
            tnuEff = mesh_.lookupType<momentumTransportModel>().nuEff();
 
            laplacianScheme =
                "laplacian(" + tnuEff().name() + ',' + schemesField_ + ")";
        }
 
        for (int i=0; i<=nCorr; i++)
        {
            fvScalarMatrix ageEqn
            (
                fvm::div(phi, age, divScheme)
             == dimensionedScalar(1) + fvModels.source(age)
            );
 
            if (diffusion_)
            {
                ageEqn -= fvm::laplacian(tnuEff(), age, laplacianScheme);
            }
 
            ageEqn.relax(relaxCoeff);
 
            fvConstraints.constrain(ageEqn);
 
            if (converged(i, ageEqn.solve(solverField_).initialResidual()))
            {
                break;
            }
 
            fvConstraints.constrain(age);
        }
    }
 
    Info<< "Min/max age:" << min(age).value()
        << ' ' << max(age).value() << endl;
 
    store(tage);
 
    return true;
}
 
 
bool Foam::functionObjects::age::write()
{
    return writeObject(typeName);
}
 
 
// ************************************************************************* //