DarcyForchheimer.C

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2012-2022 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 "addToRunTimeSelectionTable.H"
#include "DarcyForchheimer.H"
#include "geometricOneField.H"
#include "fvMatrices.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    namespace porosityModels
    {
        defineTypeNameAndDebug(DarcyForchheimer, 0);
        addToRunTimeSelectionTable(porosityModel, DarcyForchheimer, mesh);
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::porosityModels::DarcyForchheimer::DarcyForchheimer
(
    const word& name,
    const word& modelType,
    const fvMesh& mesh,
    const dictionary& dict,
    const word& cellZoneName
)
:
    porosityModel(name, modelType, mesh, dict, cellZoneName),
    dXYZ_("d", dimless/sqr(dimLength), coeffs_),
    fXYZ_("f", dimless/dimLength, coeffs_),
    D_(cellZoneIDs_.size()),
    F_(cellZoneIDs_.size()),
    rhoName_(coeffs_.lookupOrDefault<word>("rho", "rho")),
    muName_(coeffs_.lookupOrDefault<word>("mu", "mu")),
    nuName_(coeffs_.lookupOrDefault<word>("nu", "nu"))
{
    adjustNegativeResistance(dXYZ_);
    adjustNegativeResistance(fXYZ_);
 
    calcTransformModelData();
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::porosityModels::DarcyForchheimer::~DarcyForchheimer()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::porosityModels::DarcyForchheimer::calcTransformModelData()
{
    if (coordSys_.R().uniform())
    {
        forAll(cellZoneIDs_, zoneI)
        {
            D_[zoneI].setSize(1);
            F_[zoneI].setSize(1);
 
            D_[zoneI][0] = Zero;
            D_[zoneI][0].xx() = dXYZ_.value().x();
            D_[zoneI][0].yy() = dXYZ_.value().y();
            D_[zoneI][0].zz() = dXYZ_.value().z();
 
            D_[zoneI][0] = coordSys_.R().transform(Zero, D_[zoneI][0]);
 
            // leading 0.5 is from 1/2*rho
            F_[zoneI][0] = Zero;
            F_[zoneI][0].xx() = 0.5*fXYZ_.value().x();
            F_[zoneI][0].yy() = 0.5*fXYZ_.value().y();
            F_[zoneI][0].zz() = 0.5*fXYZ_.value().z();
 
            F_[zoneI][0] = coordSys_.R().transform(Zero, F_[zoneI][0]);
        }
    }
    else
    {
        forAll(cellZoneIDs_, zoneI)
        {
            const labelList& cells = mesh_.cellZones()[cellZoneIDs_[zoneI]];
 
            D_[zoneI].setSize(cells.size());
            F_[zoneI].setSize(cells.size());
 
            forAll(cells, i)
            {
                D_[zoneI][i] = Zero;
                D_[zoneI][i].xx() = dXYZ_.value().x();
                D_[zoneI][i].yy() = dXYZ_.value().y();
                D_[zoneI][i].zz() = dXYZ_.value().z();
 
                // leading 0.5 is from 1/2*rho
                F_[zoneI][i] = Zero;
                F_[zoneI][i].xx() = 0.5*fXYZ_.value().x();
                F_[zoneI][i].yy() = 0.5*fXYZ_.value().y();
                F_[zoneI][i].zz() = 0.5*fXYZ_.value().z();
            }
 
            const coordinateRotation& R = coordSys_.R
            (
                UIndirectList<vector>(mesh_.C(), cells)()
            );
 
            D_[zoneI] = R.transform(D_[zoneI]);
            F_[zoneI] = R.transform(F_[zoneI]);
        }
    }
 
    if (debug && (mesh_.time().writeTime() || mesh_.time().timeIndex() == 0))
    {
        volTensorField Dout
        (
            IOobject
            (
                typedName("D"),
                mesh_.time().name(),
                mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            mesh_,
            dimensionedTensor(dXYZ_.dimensions(), Zero)
        );
        volTensorField Fout
        (
            IOobject
            (
                typedName("F"),
                mesh_.time().name(),
                mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            mesh_,
            dimensionedTensor(fXYZ_.dimensions(), Zero)
        );
 
        UIndirectList<tensor>(Dout, mesh_.cellZones()[cellZoneIDs_[0]]) = D_[0];
        UIndirectList<tensor>(Fout, mesh_.cellZones()[cellZoneIDs_[0]]) = F_[0];
 
        Dout.write();
        Fout.write();
    }
}
 
 
void Foam::porosityModels::DarcyForchheimer::calcForce
(
    const volVectorField& U,
    const volScalarField& rho,
    const volScalarField& mu,
    vectorField& force
) const
{
    scalarField Udiag(U.size(), 0.0);
    vectorField Usource(U.size(), Zero);
    const scalarField& V = mesh_.V();
 
    apply(Udiag, Usource, V, rho, mu, U);
 
    force = Udiag*U - Usource;
}
 
 
void Foam::porosityModels::DarcyForchheimer::correct
(
    fvVectorMatrix& UEqn
) const
{
    const volVectorField& U = UEqn.psi();
    const scalarField& V = mesh_.V();
    scalarField& Udiag = UEqn.diag();
    vectorField& Usource = UEqn.source();
 
    word rhoName(IOobject::groupName(rhoName_, U.group()));
    word muName(IOobject::groupName(muName_, U.group()));
    word nuName(IOobject::groupName(nuName_, U.group()));
 
    if (UEqn.dimensions() == dimForce)
    {
        const volScalarField& rho = mesh_.lookupObject<volScalarField>(rhoName);
 
        if (mesh_.foundObject<volScalarField>(muName))
        {
            const volScalarField& mu =
                mesh_.lookupObject<volScalarField>(muName);
 
            apply(Udiag, Usource, V, rho, mu, U);
        }
        else
        {
            const volScalarField& nu =
                mesh_.lookupObject<volScalarField>(nuName);
 
            apply(Udiag, Usource, V, rho, rho*nu, U);
        }
    }
    else
    {
        if (mesh_.foundObject<volScalarField>(nuName))
        {
            const volScalarField& nu =
                mesh_.lookupObject<volScalarField>(nuName);
 
            apply(Udiag, Usource, V, geometricOneField(), nu, U);
        }
        else
        {
            const volScalarField& rho =
                mesh_.lookupObject<volScalarField>(rhoName);
            const volScalarField& mu =
                mesh_.lookupObject<volScalarField>(muName);
 
            apply(Udiag, Usource, V, geometricOneField(), mu/rho, U);
        }
    }
}
 
 
void Foam::porosityModels::DarcyForchheimer::correct
(
    const fvVectorMatrix& UEqn,
    volTensorField& AU
) const
{
    const volVectorField& U = UEqn.psi();
 
    word rhoName(IOobject::groupName(rhoName_, U.group()));
    word muName(IOobject::groupName(muName_, U.group()));
    word nuName(IOobject::groupName(nuName_, U.group()));
 
    if (UEqn.dimensions() == dimForce)
    {
        const volScalarField& rho = mesh_.lookupObject<volScalarField>(rhoName);
        const volScalarField& mu = mesh_.lookupObject<volScalarField>(muName);
 
        apply(AU, rho, mu, U);
    }
    else
    {
        if (mesh_.foundObject<volScalarField>(nuName))
        {
            const volScalarField& nu =
                mesh_.lookupObject<volScalarField>(nuName);
 
            apply(AU, geometricOneField(), nu, U);
        }
        else
        {
            const volScalarField& rho =
                mesh_.lookupObject<volScalarField>(rhoName);
            const volScalarField& mu =
                mesh_.lookupObject<volScalarField>(muName);
 
            apply(AU, geometricOneField(), mu/rho, U);
        }
    }
}
 
 
bool Foam::porosityModels::DarcyForchheimer::writeData(Ostream& os) const
{
    os  << indent << name_ << endl;
    dict_.write(os);
 
    return true;
}
 
 
// ************************************************************************* //