196 lines
4.8 KiB
C
196 lines
4.8 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration |
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\\ / A nd | For copyright notice see file Copyright
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Description
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\*---------------------------------------------------------------------------*/
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#include "MaxwellSLSViscoelastic.H"
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#include "addToRunTimeSelectionTable.H"
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#include "zeroGradientFvPatchFields.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(MaxwellSLSViscoelastic, 0);
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addToRunTimeSelectionTable(rheologyLaw, MaxwellSLSViscoelastic, dictionary);
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// Construct from dictionary
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Foam::MaxwellSLSViscoelastic::MaxwellSLSViscoelastic
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(
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const word& name,
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const volSymmTensorField& sigma,
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const dictionary& dict
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)
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:
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rheologyLaw(name, sigma, dict),
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rho_(dict.lookup("rho")),
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k1_(dict.lookup("k1")),
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eta1_(dict.lookup("eta1")),
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k2_(dict.lookup("k2")),
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nu_(dict.lookup("nu"))
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::MaxwellSLSViscoelastic::~MaxwellSLSViscoelastic()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField>
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Foam::MaxwellSLSViscoelastic::rho(scalar t) const
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{
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tmp<volScalarField> tresult
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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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"rho",
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mesh().time().timeName(),
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mesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh(),
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rho_,
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zeroGradientFvPatchScalarField::typeName
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)
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);
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tresult().correctBoundaryConditions();
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return tresult;
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}
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Foam::tmp<Foam::volScalarField> Foam::MaxwellSLSViscoelastic::E(scalar t) const
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{
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scalar E = 0.0;
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if(t>=0)
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{
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E = k2_.value() + k1_.value()*exp(-k1_.value()*t/eta1_.value());
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}
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tmp<volScalarField> tresult
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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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"E",
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mesh().time().timeName(),
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mesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh(),
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dimensionedScalar("E", k1_.dimensions(), E),
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zeroGradientFvPatchScalarField::typeName
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)
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);
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tresult().correctBoundaryConditions();
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return tresult;
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}
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Foam::tmp<Foam::volScalarField> Foam::MaxwellSLSViscoelastic::nu(scalar t) const
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{
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tmp<volScalarField> tresult
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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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"nu",
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mesh().time().timeName(),
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mesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh(),
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nu_,
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zeroGradientFvPatchScalarField::typeName
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)
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);
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tresult().correctBoundaryConditions();
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return tresult;
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}
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Foam::tmp<Foam::volScalarField> Foam::MaxwellSLSViscoelastic::J(scalar t) const
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{
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scalar J = 0.0;
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if(t>=0)
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{
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scalar Jg = 1.0/(k2_.value() + k1_.value());
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scalar Jr = 1.0/k2_.value();
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scalar tau = eta1_.value()/k1_.value();
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scalar tauC = tau*(k1_.value() + k2_.value())/k2_.value();
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J = Jg + (Jr - Jg)*(1.0 - exp(-t/tauC));
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}
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tmp<volScalarField> tresult
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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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"J",
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mesh().time().timeName(),
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mesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh(),
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dimensionedScalar("J", dimless/k1_.dimensions(), J),
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zeroGradientFvPatchScalarField::typeName
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)
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);
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tresult().correctBoundaryConditions();
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return tresult;
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}
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// ************************************************************************* //
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