volumeFractionSource.C

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    \\  /    A nd           | Copyright (C) 2019-2023 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
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#include "volumeFractionSource.H"
#include "fvmDiv.H"
#include "fvmLaplacian.H"
#include "fvcDiv.H"
#include "surfaceInterpolate.H"
#include "fluidThermophysicalTransportModel.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
    defineTypeNameAndDebug(volumeFractionSource, 0);
    addToRunTimeSelectionTable
    (
        fvModel,
        volumeFractionSource,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::fv::volumeFractionSource::readCoeffs()
{
    phiName_ = coeffs().lookupOrDefault<word>("phi", "phi");
    rhoName_ = coeffs().lookupOrDefault<word>("rho", "rho");
    UName_ = coeffs().lookupOrDefault<word>("U", "U");
 
    volumePhaseName_ = coeffs().lookup<word>("volumePhase");
}
 
 
const Foam::volScalarField& Foam::fv::volumeFractionSource::volumeAlpha() const
{
    const word alphaName = IOobject::groupName("alpha", volumePhaseName_);
 
    if (!mesh().foundObject<volScalarField>(alphaName))
    {
        volScalarField* alphaPtr =
            new volScalarField
            (
                IOobject
                (
                    alphaName,
                    mesh().time().constant(),
                    mesh(),
                    IOobject::MUST_READ,
                    IOobject::NO_WRITE
                ),
                mesh()
            );
 
        alphaPtr->store();
    }
 
    return mesh().lookupObject<volScalarField>(alphaName);
}
 
 
Foam::tmp<Foam::volScalarField> Foam::fv::volumeFractionSource::D
(
    const word& fieldName
) const
{
    const word phiName =
        IOobject::groupName(phiName_, IOobject::group(fieldName));
    const surfaceScalarField& phi =
        mesh().lookupObject<surfaceScalarField>(phiName);
 
    if (phi.dimensions() == dimVolume/dimTime)
    {
        const momentumTransportModel& turbulence =
            mesh().lookupType<momentumTransportModel>();
 
        return turbulence.nuEff();
    }
    else if (phi.dimensions() == dimMass/dimTime)
    {
        const fluidThermophysicalTransportModel& ttm =
            mesh().lookupType<fluidThermophysicalTransportModel>();
 
        return
            fieldName == ttm.thermo().T().name()
          ? ttm.kappaEff()
          : fieldName == ttm.thermo().he().name()
          ? ttm.kappaEff()/ttm.thermo().Cpv()
          : ttm.momentumTransport().rho()*ttm.momentumTransport().nuEff();
    }
    else
    {
        FatalErrorInFunction
            << "Dimensions of " << phi.name() << " not recognised"
            << exit(FatalError);
 
        return tmp<volScalarField>(nullptr);
    }
}
 
 
template <class Type, class AlphaFieldType>
void Foam::fv::volumeFractionSource::addGeneralSup
(
    const AlphaFieldType& alpha,
    fvMatrix<Type>& eqn,
    const word& fieldName
) const
{
    const word phiName =
        IOobject::groupName(phiName_, IOobject::group(fieldName));
    const surfaceScalarField& phi =
        mesh().lookupObject<surfaceScalarField>(phiName);
 
    const volScalarField B(1 - volumeAlpha());
    const volScalarField AByB(volumeAlpha()/B);
    const volScalarField D(this->D(fieldName));
 
    // Divergence term
    const word divScheme = "div(" + phiName + "," + eqn.psi().name() + ")";
    eqn -= AByB*fvm::div(phi, eqn.psi(), divScheme);
 
    // Laplacian term
    const word laplacianScheme =
        "laplacian(" + D.name() + "," + eqn.psi().name() + ")";
    eqn +=
        fvm::laplacian(D, eqn.psi())
      - 1/B*fvm::laplacian(B*D, eqn.psi(), laplacianScheme);
}
 
 
template<class Type, class AlphaFieldType>
void Foam::fv::volumeFractionSource::addAlphaSupType
(
    const AlphaFieldType& alpha,
    fvMatrix<Type>& eqn,
    const word& fieldName
) const
{
    addGeneralSup(alpha, eqn, fieldName);
}
 
 
template<class AlphaFieldType>
void Foam::fv::volumeFractionSource::addAlphaSupType
(
    const AlphaFieldType& alpha,
    fvMatrix<scalar>& eqn,
    const word& fieldName
) const
{
    if (IOobject::member(fieldName) == rhoName_)
    {
        const word phiName =
            IOobject::groupName(phiName_, IOobject::group(fieldName));
        const surfaceScalarField& phi =
            mesh().lookupObject<surfaceScalarField>(phiName);
 
        const volScalarField AByB(volumeAlpha()/(1 - volumeAlpha()));
 
        eqn -= AByB*fvc::div(phi);
    }
    else
    {
        addGeneralSup(alpha, eqn, fieldName);
    }
}
 
 
template<class AlphaFieldType>
void Foam::fv::volumeFractionSource::addAlphaSupType
(
    const AlphaFieldType& alpha,
    fvMatrix<vector>& eqn,
    const word& fieldName
) const
{
    if (IOobject::member(fieldName) == UName_)
    {
        const word phiName =
            IOobject::groupName(phiName_, IOobject::group(fieldName));
        const surfaceScalarField& phi =
            mesh().lookupObject<surfaceScalarField>(phiName);
 
        const volScalarField AByB(volumeAlpha()/(1 - volumeAlpha()));
 
        const word scheme("div(" + phiName + "," + eqn.psi().name() + ")");
 
        eqn -= fvm::div(fvc::interpolate(AByB)*phi, eqn.psi(), scheme);
    }
    else
    {
        addGeneralSup(alpha, eqn, fieldName);
    }
}
 
 
template<class Type>
void Foam::fv::volumeFractionSource::addSupType
(
    fvMatrix<Type>& eqn,
    const word& fieldName
) const
{
    addAlphaSupType(geometricOneField(), eqn, fieldName);
}
 
 
template<class Type>
void Foam::fv::volumeFractionSource::addSupType
(
    const volScalarField& rho,
    fvMatrix<Type>& eqn,
    const word& fieldName
) const
{
    addAlphaSupType(geometricOneField(), eqn, fieldName);
}
 
 
template<class Type>
void Foam::fv::volumeFractionSource::addSupType
(
    const volScalarField& alpha,
    const volScalarField& rho,
    fvMatrix<Type>& eqn,
    const word& fieldName
) const
{
    addAlphaSupType(alpha, eqn, fieldName);
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::fv::volumeFractionSource::volumeFractionSource
(
    const word& name,
    const word& modelType,
    const fvMesh& mesh,
    const dictionary& dict
)
:
    fvModel(name, modelType, mesh, dict),
    phiName_(word::null),
    rhoName_(word::null),
    UName_(word::null),
    volumePhaseName_(word::null)
{
    readCoeffs();
    volumeAlpha();
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::fv::volumeFractionSource::~volumeFractionSource()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::fv::volumeFractionSource::addsSupToField(const word& fieldName) const
{
    return true;
}
 
 
Foam::wordList Foam::fv::volumeFractionSource::addSupFields() const
{
    return wordList();
}
 
 
FOR_ALL_FIELD_TYPES(IMPLEMENT_FV_MODEL_ADD_SUP, fv::volumeFractionSource);
 
 
FOR_ALL_FIELD_TYPES(IMPLEMENT_FV_MODEL_ADD_RHO_SUP, fv::volumeFractionSource);
 
 
FOR_ALL_FIELD_TYPES
(
    IMPLEMENT_FV_MODEL_ADD_ALPHA_RHO_SUP,
    fv::volumeFractionSource
);
 
 
bool Foam::fv::volumeFractionSource::movePoints()
{
    return true;
}
 
 
void Foam::fv::volumeFractionSource::topoChange(const polyTopoChangeMap&)
{}
 
 
void Foam::fv::volumeFractionSource::mapMesh(const polyMeshMap& map)
{}
 
 
void Foam::fv::volumeFractionSource::distribute(const polyDistributionMap&)
{}
 
 
bool Foam::fv::volumeFractionSource::read(const dictionary& dict)
{
    if (fvModel::read(dict))
    {
        readCoeffs();
        return true;
    }
    else
    {
        return false;
    }
}
 
 
// ************************************************************************* //