porousBafflePressureFvPatchField.C

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    Copyright (C) 2020-2022 OpenCFD Ltd.
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#include "porousBafflePressureFvPatchField.H"
#include "surfaceFields.H"
#include "turbulenceModel.H"
#include "addToRunTimeSelectionTable.H"

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

Foam::porousBafflePressureFvPatchField::porousBafflePressureFvPatchField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF
)
:
    parent_bctype(p, iF),
    phiName_("phi"),
    rhoName_("rho"),
    D_(),
    I_(),
    length_(0),
    uniformJump_(false)
{}


Foam::porousBafflePressureFvPatchField::porousBafflePressureFvPatchField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict,
    const bool needValue
)
:
    parent_bctype(p, iF, dict, false),  // needValue = false
    phiName_(dict.getOrDefault<word>("phi", "phi")),
    rhoName_(dict.getOrDefault<word>("rho", "rho")),
    D_(Function1<scalar>::New("D", dict, &db())),
    I_(Function1<scalar>::New("I", dict, &db())),
    length_(dict.get<scalar>("length")),
    uniformJump_(dict.getOrDefault("uniformJump", false))
{
    if (needValue)
    {
        if (!this->readValueEntry(dict))
        {
            this->evaluate(Pstream::commsTypes::buffered);
        }
    }
}


Foam::porousBafflePressureFvPatchField::porousBafflePressureFvPatchField
(
    const this_bctype& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    parent_bctype(ptf, p, iF, mapper),
    phiName_(ptf.phiName_),
    rhoName_(ptf.rhoName_),
    D_(ptf.D_.clone()),
    I_(ptf.I_.clone()),
    length_(ptf.length_),
    uniformJump_(ptf.uniformJump_)
{}


Foam::porousBafflePressureFvPatchField::porousBafflePressureFvPatchField
(
    const this_bctype& ptf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    parent_bctype(ptf, iF),
    phiName_(ptf.phiName_),
    rhoName_(ptf.rhoName_),
    D_(ptf.D_.clone()),
    I_(ptf.I_.clone()),
    length_(ptf.length_),
    uniformJump_(ptf.uniformJump_)
{}


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

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

    const auto& phip = patch().lookupPatchField<surfaceScalarField>(phiName_);

    scalarField Un(phip/patch().magSf());

    if (phip.internalField().dimensions() == dimMass/dimTime)
    {
        Un /= patch().lookupPatchField<volScalarField>(rhoName_);
    }

    if (uniformJump_)
    {
        Un = gAverage(Un);
    }
    scalarField magUn(mag(Un));

    const turbulenceModel& turbModel = db().lookupObject<turbulenceModel>
    (
        IOobject::groupName
        (
            turbulenceModel::propertiesName,
            internalField().group()
        )
    );

    const scalar t = db().time().timeOutputValue();
    const scalar D = D_->value(t);
    const scalar I = I_->value(t);

    setJump
    (
        -sign(Un)
        *(
            D*turbModel.nu(patch().index())
          + I*0.5*magUn
         )*magUn*length_
    );

    if (internalField().dimensions() == dimPressure)
    {
        setJump
        (
            jump()*patch().lookupPatchField<volScalarField>(rhoName_)
        );
    }

    this->relax();

    if (debug)
    {
        scalar avePressureJump = gAverage(jump());
        scalar aveVelocity = gAverage(Un);

        Info<< patch().boundaryMesh().mesh().name() << ':'
            << patch().name() << ':'
            << " Average pressure drop :" << avePressureJump
            << " Average velocity :" << aveVelocity
            << endl;
    }

    this->parent_bctype::updateCoeffs();
}


void Foam::porousBafflePressureFvPatchField::write(Ostream& os) const
{
    this->parent_bctype::write(os);
    os.writeEntryIfDifferent<word>("phi", "phi", phiName_);
    os.writeEntryIfDifferent<word>("rho", "rho", rhoName_);
    D_->writeData(os);
    I_->writeData(os);
    os.writeEntry("length", length_);
    os.writeEntry("uniformJump", uniformJump_);
}


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

namespace Foam
{
    makePatchTypeField
    (
        fvPatchScalarField,
        porousBafflePressureFvPatchField
    );
}

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