yPlus.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2013-2022 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    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
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "yPlus.H"
#include "momentumTransportModel.H"
#include "nutWallFunctionFvPatchScalarField.H"
#include "wallFvPatch.H"
#include "nearWallDist.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
    defineTypeNameAndDebug(yPlus, 0);
 
    addToRunTimeSelectionTable
    (
        functionObject,
        yPlus,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::functionObjects::yPlus::writeFileHeader(const label i)
{
    writeHeader(file(), "y+ ()");
 
    writeCommented(file(), "Time");
    writeTabbed(file(), "patch");
    writeTabbed(file(), "min");
    writeTabbed(file(), "max");
    writeTabbed(file(), "average");
    file() << endl;
}
 
 
Foam::tmp<Foam::volScalarField> Foam::functionObjects::yPlus::calcYPlus
(
    const momentumTransportModel& turbModel
)
{
    tmp<volScalarField> tyPlus
    (
        volScalarField::New
        (
            IOobject::groupName(type(), phaseName_),
            mesh_,
            dimensionedScalar(dimless, 0)
        )
    );
 
    volScalarField::Boundary& yPlusBf = tyPlus.ref().boundaryFieldRef();
 
    const volScalarField::Boundary& d = nearWallDist::New(mesh_).y();
 
    const tmp<volScalarField> tnut = turbModel.nut();
    const volScalarField::Boundary& nutBf = tnut().boundaryField();
 
    const tmp<volScalarField> tnuEff = turbModel.nuEff();
    const volScalarField::Boundary& nuEffBf = tnuEff().boundaryField();
 
    const tmp<volScalarField> tnu = turbModel.nu();
    const volScalarField::Boundary& nuBf = tnu().boundaryField();
 
        const fvPatchList& patches = mesh_.boundary();
 
    forAll(patches, patchi)
    {
        const fvPatch& patch = patches[patchi];
 
        if (isA<nutWallFunctionFvPatchScalarField>(nutBf[patchi]))
        {
            const nutWallFunctionFvPatchScalarField& nutPf =
                dynamic_cast<const nutWallFunctionFvPatchScalarField&>
                (
                    nutBf[patchi]
                );
 
            yPlusBf[patchi] = nutPf.yPlus();
        }
        else if (isA<wallFvPatch>(patch))
        {
            yPlusBf[patchi] =
                d[patchi]
               *sqrt
                (
                    nuEffBf[patchi]
                   *mag(turbModel.U().boundaryField()[patchi].snGrad())
                )/nuBf[patchi];
        }
    }
 
    return tyPlus;
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::functionObjects::yPlus::yPlus
(
    const word& name,
    const Time& runTime,
    const dictionary& dict
)
:
    fvMeshFunctionObject(name, runTime, dict),
    logFiles(obr_, name),
    writeLocalObjects(obr_, log),
    phaseName_(dict.lookupOrDefault<word>("phase", word::null))
{
    read(dict);
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::functionObjects::yPlus::~yPlus()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::functionObjects::yPlus::read(const dictionary& dict)
{
    fvMeshFunctionObject::read(dict);
    writeLocalObjects::read(dict);
 
    resetName(IOobject::groupName(typeName, phaseName_));
    resetLocalObjectName(IOobject::groupName(typeName, phaseName_));
 
    return true;
}
 
 
bool Foam::functionObjects::yPlus::execute()
{
    if (mesh_.foundObject<momentumTransportModel>
    (
        IOobject::groupName(momentumTransportModel::typeName, phaseName_))
    )
    {
        const momentumTransportModel& model =
            mesh_.lookupType<momentumTransportModel>(phaseName_);
 
        word name(IOobject::groupName(type(), phaseName_));
 
        return store(name, calcYPlus(model));
    }
    else
    {
        FatalErrorInFunction
            << "Unable to find turbulence model in the "
            << "database" << exit(FatalError);
    }
 
    return true;
}
 
 
bool Foam::functionObjects::yPlus::write()
{
    Log << type() << " " << name() << " write:" << nl;
 
    writeLocalObjects::write();
 
    logFiles::write();
 
    const volScalarField& yPlus =
        mesh_.lookupObject<volScalarField>
        (
            IOobject::groupName(type(), phaseName_)
        );
 
    const volScalarField::Boundary& yPlusBf = yPlus.boundaryField();
    const fvPatchList& patches = mesh_.boundary();
 
    forAll(patches, patchi)
    {
        const fvPatch& patch = patches[patchi];
 
        if (isA<wallFvPatch>(patch))
        {
            const scalarField& yPlusp = yPlusBf[patchi];
 
            const scalar minYplus = gMin(yPlusp);
            const scalar maxYplus = gMax(yPlusp);
            const scalar avgYplus = gAverage(yPlusp);
 
            if (Pstream::master())
            {
                Log << "    patch " << patch.name()
                    << " y+ : min = " << minYplus << ", max = " << maxYplus
                    << ", average = " << avgYplus << nl;
 
                writeTime(file());
                file()
                    << tab << patch.name()
                    << tab << minYplus
                    << tab << maxYplus
                    << tab << avgYplus
                    << endl;
            }
        }
    }
 
    Log << endl;
 
    return true;
}
 
 
// ************************************************************************* //