flowRateInletVelocityFvPatchVectorField.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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     \\/     M anipulation  |
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#include "flowRateInletVelocityFvPatchVectorField.H"
#include <finiteVolume/volFields.H>
#include <OpenFOAM/addToRunTimeSelectionTable.H>
#include <finiteVolume/fvPatchFieldMapper.H>
#include <finiteVolume/surfaceFields.H>

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::
flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchField<vector>(p, iF),
    flowRate_(0),
    phiName_("phi"),
    rhoName_("rho")
{}


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_),
    phiName_(ptf.phiName_),
    rhoName_(ptf.rhoName_)
{}


Foam::
flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchField<vector>(p, iF, dict),
    flowRate_(readScalar(dict.lookup("flowRate"))),
    phiName_(dict.lookupOrDefault<word>("phi", "phi")),
    rhoName_(dict.lookupOrDefault<word>("rho", "rho"))
{}


Foam::
flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const flowRateInletVelocityFvPatchVectorField& ptf
)
:
    fixedValueFvPatchField<vector>(ptf),
    flowRate_(ptf.flowRate_),
    phiName_(ptf.phiName_),
    rhoName_(ptf.rhoName_)
{}


Foam::
flowRateInletVelocityFvPatchVectorField::
flowRateInletVelocityFvPatchVectorField
(
    const flowRateInletVelocityFvPatchVectorField& ptf,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedValueFvPatchField<vector>(ptf, iF),
    flowRate_(ptf.flowRate_),
    phiName_(ptf.phiName_),
    rhoName_(ptf.rhoName_)
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

void Foam::flowRateInletVelocityFvPatchVectorField::updateCoeffs()
{
    if (updated())
    {
        return;
    }

    // a simpler way of doing this would be nice
    scalar avgU = -flowRate_/gSum(patch().magSf());

    vectorField n = patch().nf();

    const surfaceScalarField& phi =
        db().lookupObject<surfaceScalarField>(phiName_);

    if (phi.dimensions() == dimVelocity*dimArea)
    {
        // volumetric flow-rate
        operator==(n*avgU);
    }
    else if (phi.dimensions() == dimDensity*dimVelocity*dimArea)
    {
        const fvPatchField<scalar>& rhop =
            patch().lookupPatchField<volScalarField, scalar>(rhoName_);

        // mass flow-rate
        operator==(n*avgU/rhop);
    }
    else
    {
        FatalErrorIn
        (
            "flowRateInletVelocityFvPatchVectorField::updateCoeffs()"
        )   << "dimensions of " << phiName_ << " are incorrect" << nl
            << "    on patch " << this->patch().name()
            << " of field " << this->dimensionedInternalField().name()
            << " in file " << this->dimensionedInternalField().objectPath()
            << nl << exit(FatalError);
    }

    fixedValueFvPatchField<vector>::updateCoeffs();
}


void Foam::flowRateInletVelocityFvPatchVectorField::write(Ostream& os) const
{
    fvPatchField<vector>::write(os);
    os.writeKeyword("flowRate") << flowRate_ << token::END_STATEMENT << nl;
    if (phiName_ != "phi")
    {
        os.writeKeyword("phi") << phiName_ << token::END_STATEMENT << nl;
    }
    if (rhoName_ != "rho")
    {
        os.writeKeyword("rho") << rhoName_ << token::END_STATEMENT << nl;
    }
    writeEntry("value", os);
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
   makePatchTypeField
   (
       fvPatchVectorField,
       flowRateInletVelocityFvPatchVectorField
   );
}


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