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|
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 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 "SchaefferFrictionalStress.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace kineticTheoryModels
{
namespace frictionalStressModels
{
defineTypeNameAndDebug(Schaeffer, 0);
addToRunTimeSelectionTable
(
frictionalStressModel,
Schaeffer,
dictionary
);
}
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::Schaeffer
(
const dictionary& dict
)
:
frictionalStressModel(dict),
coeffDict_(dict.subDict(typeName + "Coeffs")),
phi_("phi", dimless, coeffDict_)
{
phi_ *= constant::mathematical::pi/180.0;
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::~Schaeffer()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::
frictionalPressure
(
const volScalarField& alpha1,
const dimensionedScalar& alphaMinFriction,
const dimensionedScalar& alphaMax
) const
{
return
dimensionedScalar("1e24", dimensionSet(1, -1, -2, 0, 0), 1e24)
*pow(Foam::max(alpha1 - alphaMinFriction, scalar(0)), 10.0);
}
Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::
frictionalPressurePrime
(
const volScalarField& alpha1,
const dimensionedScalar& alphaMinFriction,
const dimensionedScalar& alphaMax
) const
{
return
dimensionedScalar("1e25", dimensionSet(1, -1, -2, 0, 0), 1e25)
*pow(Foam::max(alpha1 - alphaMinFriction, scalar(0)), 9.0);
}
Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::nu
(
const volScalarField& alpha1,
const dimensionedScalar& alphaMinFriction,
const dimensionedScalar& alphaMax,
const volScalarField& pf,
const volSymmTensorField& D
) const
{
const scalar I2Dsmall = 1.0e-15;
// Creating nu assuming it should be 0 on the boundary which may not be
// true
tmp<volScalarField> tnu
(
new volScalarField
(
IOobject
(
"Schaeffer:nu",
alpha1.mesh().time().timeName(),
alpha1.mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
alpha1.mesh(),
dimensionedScalar("nu", dimensionSet(0, 2, -1, 0, 0), 0.0)
)
);
volScalarField& nuf = tnu.ref();
forAll(D, celli)
{
if (alpha1[celli] > alphaMinFriction.value())
{
nuf[celli] =
0.5*pf[celli]*sin(phi_.value())
/(
sqrt(1.0/6.0*(sqr(D[celli].xx() - D[celli].yy())
+ sqr(D[celli].yy() - D[celli].zz())
+ sqr(D[celli].zz() - D[celli].xx()))
+ sqr(D[celli].xy()) + sqr(D[celli].xz())
+ sqr(D[celli].yz())) + I2Dsmall
);
}
}
// Correct coupled BCs
nuf.correctBoundaryConditions();
return tnu;
}
bool Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::read()
{
coeffDict_ <<= dict_.subDict(typeName + "Coeffs");
phi_.read(coeffDict_);
phi_ *= constant::mathematical::pi/180.0;
return true;
}
// ************************************************************************* //
|
