heatTransferCoeffModel.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    Copyright (C) 2017-2023 OpenCFD Ltd.
-------------------------------------------------------------------------------
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
    (at your option) any later version.
 
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    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 "heatTransferCoeffModel.H"
#include "fvMesh.H"
#include "fluidThermo.H"
#include "turbulentTransportModel.H"
#include "turbulentFluidThermoModel.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    defineTypeNameAndDebug(heatTransferCoeffModel, 0);
    defineRunTimeSelectionTable(heatTransferCoeffModel, dictionary);
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::heatTransferCoeffModel::heatTransferCoeffModel
(
    const dictionary& dict,
    const fvMesh& mesh,
    const word& TName
)
:
    mesh_(mesh),
    TName_(TName),
    qrName_("qr")
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
Foam::tmp<Foam::FieldField<Foam::Field, Foam::scalar>>
Foam::heatTransferCoeffModel::q() const
{
    const auto& T = mesh_.lookupObject<volScalarField>(TName_);
    const volScalarField::Boundary& Tbf = T.boundaryField();
 
    auto tq = tmp<FieldField<Field, scalar>>::New(Tbf.size());
    auto& q = tq.ref();
 
    forAll(q, patchi)
    {
        q.set(patchi, new Field<scalar>(Tbf[patchi].size(), Zero));
    }
 
    typedef compressible::turbulenceModel cmpTurbModel;
 
    if (mesh_.foundObject<cmpTurbModel>(cmpTurbModel::propertiesName))
    {
        const auto& turb =
            mesh_.lookupObject<cmpTurbModel>(cmpTurbModel::propertiesName);
 
        // Note: calling he(p,T) instead of he()
        const volScalarField he(turb.transport().he(turb.transport().p(), T));
        const volScalarField::Boundary& hebf = he.boundaryField();
 
        const volScalarField alphaEff(turb.alphaEff());
        const volScalarField::Boundary& alphaEffbf = alphaEff.boundaryField();
 
        for (const label patchi : patchIDs_)
        {
            q[patchi] = alphaEffbf[patchi]*hebf[patchi].snGrad();
        }
    }
    else if (mesh_.foundObject<fluidThermo>(fluidThermo::dictName))
    {
        const auto& thermo =
            mesh_.lookupObject<fluidThermo>(fluidThermo::dictName);
 
        // Note: calling he(p,T) instead of he()
        const volScalarField he(thermo.he(thermo.p(), T));
        const volScalarField::Boundary& hebf = he.boundaryField();
 
        const volScalarField& alpha(thermo.alpha());
        const volScalarField::Boundary& alphabf = alpha.boundaryField();
 
        for (const label patchi : patchIDs_)
        {
            q[patchi] = alphabf[patchi]*hebf[patchi].snGrad();
        }
    }
    else
    {
        FatalErrorInFunction
            << "Unable to find a valid thermo model to evaluate q. " << nl
            << "Database contents are: " << mesh_.objectRegistry::sortedToc()
            << exit(FatalError);
    }
 
    // Add radiative heat flux contribution if present
 
    const auto* qrPtr = mesh_.cfindObject<volScalarField>(qrName_);
 
    if (qrPtr)
    {
        const volScalarField::Boundary& qrbf = qrPtr->boundaryField();
 
        for (const label patchi : patchIDs_)
        {
            q[patchi] -= qrbf[patchi];
        }
    }
 
    return tq;
}
 
 
bool Foam::heatTransferCoeffModel::calc
(
    volScalarField& result,
    const FieldField<Field, scalar>& q
)
{
    htc(result, q);
 
    return true;
}
 
 
bool Foam::heatTransferCoeffModel::read(const dictionary& dict)
{
    const polyBoundaryMesh& pbm = mesh_.boundaryMesh();
 
    dict.readIfPresent("qr", qrName_);
 
    patchIDs_ = pbm.patchSet(dict.get<wordRes>("patches")).sortedToc();
 
    return true;
}
 
 
// ************************************************************************* //