db7fac3f24
git-svn-id: https://openfoam-extend.svn.sourceforge.net/svnroot/openfoam-extend/trunk/Core/OpenFOAM-1.5-dev@1731 e4e07f05-0c2f-0410-a05a-b8ba57e0c909
148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright held by original author
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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\*---------------------------------------------------------------------------*/
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#include "SchaefferFrictionalStress.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(SchaefferFrictionalStress, 0);
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addToRunTimeSelectionTable
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(
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frictionalStressModel,
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SchaefferFrictionalStress,
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dictionary
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);
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::SchaefferFrictionalStress::SchaefferFrictionalStress
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(
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const dictionary& dict
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)
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:
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frictionalStressModel(dict)
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::SchaefferFrictionalStress::~SchaefferFrictionalStress()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::
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frictionalPressure
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(
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const volScalarField& alpha,
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const dimensionedScalar& alphaMinFriction,
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const dimensionedScalar& alphaMax,
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const dimensionedScalar& Fr,
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const dimensionedScalar& eta,
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const dimensionedScalar& p
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) const
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{
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return
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dimensionedScalar("1e24", dimensionSet(1, -1, -2, 0, 0), 1e24)
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*pow(Foam::max(alpha - alphaMinFriction, scalar(0)), 10.0);
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}
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Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::
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frictionalPressurePrime
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(
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const volScalarField& alpha,
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const dimensionedScalar& alphaMinFriction,
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const dimensionedScalar& alphaMax,
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const dimensionedScalar& Fr,
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const dimensionedScalar& eta,
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const dimensionedScalar& p
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) const
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{
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return
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dimensionedScalar("1e25", dimensionSet(1, -1, -2, 0, 0), 1e25)
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*pow(Foam::max(alpha - alphaMinFriction, scalar(0)), 9.0);
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}
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Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::muf
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(
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const volScalarField& alpha,
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const dimensionedScalar& alphaMax,
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const volScalarField& pf,
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const volTensorField& D,
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const dimensionedScalar& phi
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) const
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{
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const scalar I2Dsmall = 1.0e-15;
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// Creating muf assuming it should be 0 on the boundary which may not be
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// true
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tmp<volScalarField> tmuf
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(
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new volScalarField
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(
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IOobject
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(
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"muf",
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alpha.mesh().time().timeName(),
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alpha.mesh()
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),
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alpha.mesh(),
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dimensionedScalar("muf", dimensionSet(1, -1, -1, 0, 0), 0.0)
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)
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);
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volScalarField& muff = tmuf();
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forAll (D, celli)
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{
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if (alpha[celli] > alphaMax.value()-5e-2)
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{
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muff[celli] =
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0.5*pf[celli]*sin(phi.value())
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/(
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sqrt(1.0/6.0*(sqr(D[celli].xx() - D[celli].yy())
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+ sqr(D[celli].yy() - D[celli].zz())
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+ sqr(D[celli].zz() - D[celli].xx()))
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+ sqr(D[celli].xy()) + sqr(D[celli].xz())
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+ sqr(D[celli].yz())) + I2Dsmall
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);
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}
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}
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return tmuf;
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}
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// ************************************************************************* //
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