mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
365f9b0006
to simplify construction of dimensionedScalar properties and avoid the duplication of the name string in the constructor call.
140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 2014-2015 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 "BinghamPlastic.H"
|
|
#include "addToRunTimeSelectionTable.H"
|
|
#include "fvcGrad.H"
|
|
|
|
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
|
|
|
|
namespace Foam
|
|
{
|
|
namespace mixtureViscosityModels
|
|
{
|
|
defineTypeNameAndDebug(BinghamPlastic, 0);
|
|
|
|
addToRunTimeSelectionTable
|
|
(
|
|
mixtureViscosityModel,
|
|
BinghamPlastic,
|
|
dictionary
|
|
);
|
|
}
|
|
}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
|
|
|
|
Foam::mixtureViscosityModels::BinghamPlastic::BinghamPlastic
|
|
(
|
|
const word& name,
|
|
const dictionary& viscosityProperties,
|
|
const volVectorField& U,
|
|
const surfaceScalarField& phi
|
|
)
|
|
:
|
|
plastic(name, viscosityProperties, U, phi, typeName),
|
|
yieldStressCoeff_
|
|
(
|
|
"BinghamCoeff",
|
|
dimensionSet(1, -1, -2, 0, 0),
|
|
plasticCoeffs_
|
|
),
|
|
yieldStressExponent_
|
|
(
|
|
"BinghamExponent",
|
|
dimless,
|
|
plasticCoeffs_
|
|
),
|
|
yieldStressOffset_
|
|
(
|
|
"BinghamOffset",
|
|
dimless,
|
|
plasticCoeffs_
|
|
),
|
|
U_(U)
|
|
{}
|
|
|
|
|
|
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
|
|
|
|
Foam::tmp<Foam::volScalarField>
|
|
Foam::mixtureViscosityModels::BinghamPlastic::mu
|
|
(
|
|
const volScalarField& muc
|
|
) const
|
|
{
|
|
volScalarField tauy
|
|
(
|
|
yieldStressCoeff_
|
|
*(
|
|
pow
|
|
(
|
|
scalar(10),
|
|
yieldStressExponent_
|
|
*(max(alpha_, scalar(0)) + yieldStressOffset_)
|
|
)
|
|
- pow
|
|
(
|
|
scalar(10),
|
|
yieldStressExponent_*yieldStressOffset_
|
|
)
|
|
)
|
|
);
|
|
|
|
volScalarField mup(plastic::mu(muc));
|
|
|
|
dimensionedScalar tauySmall("tauySmall", tauy.dimensions(), SMALL);
|
|
|
|
return min
|
|
(
|
|
tauy
|
|
/(
|
|
sqrt(2.0)*mag(symm(fvc::grad(U_)))
|
|
+ 1.0e-4*(tauy + tauySmall)/mup
|
|
)
|
|
+ mup,
|
|
muMax_
|
|
);
|
|
}
|
|
|
|
|
|
bool Foam::mixtureViscosityModels::BinghamPlastic::read
|
|
(
|
|
const dictionary& viscosityProperties
|
|
)
|
|
{
|
|
plastic::read(viscosityProperties);
|
|
|
|
plasticCoeffs_.lookup("yieldStressCoeff") >> yieldStressCoeff_;
|
|
plasticCoeffs_.lookup("yieldStressExponent") >> yieldStressExponent_;
|
|
plasticCoeffs_.lookup("yieldStressOffset") >> yieldStressOffset_;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|