flowRateInletVelocityFvPatchVectorField.C

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#include "flowRateInletVelocityFvPatchVectorField.H"
#include "volFields.H"
#include "addToRunTimeSelectionTable.H"
#include "fvPatchFieldMapper.H"
#include "surfaceFields.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchField<vector>(p, iF),
    flowRate_(new DataEntry<scalar>("massFlowRate")),
    volumetric_(false),
    rhoName_("rho"),
    rhoInlet_(0.0)
{}
 
 
Foam::flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const flowRateInletVelocityFvPatchVectorField& ptf,
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchField<vector>(ptf, p, iF, mapper),
    flowRate_(ptf.flowRate_, false),
    volumetric_(ptf.volumetric_),
    rhoName_(ptf.rhoName_),
    rhoInlet_(ptf.rhoInlet_)
{}
 
 
Foam::flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchField<vector>(p, iF),
    rhoInlet_(dict.lookupOrDefault<scalar>("rhoInlet", -VGREAT))
{
    if (dict.found("volumetricFlowRate"))
    {
        volumetric_ = true;
        flowRate_ = DataEntry<scalar>::New("volumetricFlowRate", dict);
        rhoName_ = "rho";
    }
    else if (dict.found("massFlowRate"))
    {
        volumetric_ = false;
        flowRate_ = DataEntry<scalar>::New("massFlowRate", dict);
        rhoName_ = word(dict.lookupOrDefault<word>("rho", "rho"));
    }
    else
    {
        FatalIOErrorInFunction
        (
            dict
        )   << "Please supply either 'volumetricFlowRate' or"
            << " 'massFlowRate' and 'rho'" << exit(FatalIOError);
    }
 
    // Value field require if mass based
    if (dict.found("value"))
    {
        fvPatchField<vector>::operator=
        (
            vectorField("value", dict, p.size())
        );
    }
    else
    {
        evaluate(Pstream::blocking);
    }
}
 
 
Foam::flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const flowRateInletVelocityFvPatchVectorField& ptf
)
:
    fixedValueFvPatchField<vector>(ptf),
    flowRate_(ptf.flowRate_, false),
    volumetric_(ptf.volumetric_),
    rhoName_(ptf.rhoName_),
    rhoInlet_(ptf.rhoInlet_)
{}
 
 
Foam::flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const flowRateInletVelocityFvPatchVectorField& ptf,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchField<vector>(ptf, iF),
    flowRate_(ptf.flowRate_, false),
    volumetric_(ptf.volumetric_),
    rhoName_(ptf.rhoName_),
    rhoInlet_(ptf.rhoInlet_)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::flowRateInletVelocityFvPatchVectorField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    const scalar t = db().time().timeOutputValue();
 
    // a simpler way of doing this would be nice
    const scalar avgU = -flowRate_->value(t)/gSum(patch().magSf());
 
    tmp<vectorField> n = patch().nf();
 
    if (volumetric_ || rhoName_ == "none")
    {
        // volumetric flow-rate or density not given
        operator==(n*avgU);
    }
    else
    {
        // mass flow-rate
        if (db().foundObject<volScalarField>(rhoName_))
        {
            const fvPatchField<scalar>& rhop =
                patch().lookupPatchField<volScalarField, scalar>(rhoName_);
 
            operator==(n*avgU/rhop);
        }
        else
        {
            // Use constant density
            if (rhoInlet_ < 0)
            {
                FatalErrorInFunction
                    << "Did not find registered density field " << rhoName_
                    << " and no constant density 'rhoInlet' specified"
                    << exit(FatalError);
            }
            operator==(n*avgU/rhoInlet_);
        }
    }
 
    fixedValueFvPatchVectorField::updateCoeffs();
}
 
 
void Foam::flowRateInletVelocityFvPatchVectorField::write(Ostream& os) const
{
    fvPatchField<vector>::write(os);
    flowRate_->writeData(os);
    if (!volumetric_)
    {
        writeEntryIfDifferent<word>(os, "rho", "rho", rhoName_);
        writeEntryIfDifferent<scalar>(os, "rhoInlet", -VGREAT, rhoInlet_);
    }
    writeEntry("value", os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
   makePatchTypeField
   (
       fvPatchVectorField,
       flowRateInletVelocityFvPatchVectorField
   );
}
 
 
// ************************************************************************* //