147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | foam-extend: Open Source CFD
|
|
\\ / O peration | Version: 4.0
|
|
\\ / A nd | Web: http://www.foam-extend.org
|
|
\\/ M anipulation | For copyright notice see file Copyright
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of foam-extend.
|
|
|
|
foam-extend 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.
|
|
|
|
foam-extend 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "SchaefferFrictionalStress.H"
|
|
#include "addToRunTimeSelectionTable.H"
|
|
|
|
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
|
|
|
|
namespace Foam
|
|
{
|
|
defineTypeNameAndDebug(SchaefferFrictionalStress, 0);
|
|
|
|
addToRunTimeSelectionTable
|
|
(
|
|
frictionalStressModel,
|
|
SchaefferFrictionalStress,
|
|
dictionary
|
|
);
|
|
}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
|
|
|
|
Foam::SchaefferFrictionalStress::SchaefferFrictionalStress
|
|
(
|
|
const dictionary& dict
|
|
)
|
|
:
|
|
frictionalStressModel(dict)
|
|
{}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
|
|
|
|
Foam::SchaefferFrictionalStress::~SchaefferFrictionalStress()
|
|
{}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
|
|
|
|
Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::
|
|
frictionalPressure
|
|
(
|
|
const volScalarField& alpha,
|
|
const dimensionedScalar& alphaMinFriction,
|
|
const dimensionedScalar& alphaMax,
|
|
const dimensionedScalar& Fr,
|
|
const dimensionedScalar& eta,
|
|
const dimensionedScalar& p
|
|
) const
|
|
{
|
|
return
|
|
dimensionedScalar("1e24", dimensionSet(1, -1, -2, 0, 0), 1e24)
|
|
*pow(Foam::max(alpha - alphaMinFriction, scalar(0)), 10.0);
|
|
}
|
|
|
|
|
|
Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::
|
|
frictionalPressurePrime
|
|
(
|
|
const volScalarField& alpha,
|
|
const dimensionedScalar& alphaMinFriction,
|
|
const dimensionedScalar& alphaMax,
|
|
const dimensionedScalar& Fr,
|
|
const dimensionedScalar& eta,
|
|
const dimensionedScalar& p
|
|
) const
|
|
{
|
|
return
|
|
dimensionedScalar("1e25", dimensionSet(1, -1, -2, 0, 0), 1e25)
|
|
*pow(Foam::max(alpha - alphaMinFriction, scalar(0)), 9.0);
|
|
}
|
|
|
|
|
|
Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::muf
|
|
(
|
|
const volScalarField& alpha,
|
|
const dimensionedScalar& alphaMax,
|
|
const volScalarField& pf,
|
|
const volTensorField& D,
|
|
const dimensionedScalar& phi
|
|
) const
|
|
{
|
|
const scalar I2Dsmall = 1.0e-15;
|
|
|
|
// Creating muf assuming it should be 0 on the boundary which may not be
|
|
// true
|
|
tmp<volScalarField> tmuf
|
|
(
|
|
new volScalarField
|
|
(
|
|
IOobject
|
|
(
|
|
"muf",
|
|
alpha.mesh().time().timeName(),
|
|
alpha.mesh()
|
|
),
|
|
alpha.mesh(),
|
|
dimensionedScalar("muf", dimensionSet(1, -1, -1, 0, 0), 0.0)
|
|
)
|
|
);
|
|
|
|
volScalarField& muff = tmuf();
|
|
|
|
forAll (D, celli)
|
|
{
|
|
if (alpha[celli] > alphaMax.value()-5e-2)
|
|
{
|
|
muff[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
|
|
);
|
|
}
|
|
}
|
|
|
|
return tmuf;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|