170 lines
4.3 KiB
C
170 lines
4.3 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 (C) 2004-2007 Hrvoje Jasak
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Description
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\*---------------------------------------------------------------------------*/
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#include "PronyViscoelastic.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(PronyViscoelastic, 0);
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addToRunTimeSelectionTable(rheologyLaw, PronyViscoelastic, dictionary);
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}
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// Construct from dictionary
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Foam::PronyViscoelastic::PronyViscoelastic
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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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k_("k", dict, readInt(dict.lookup("size"))),
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kDimensions_(dict.lookup("kDimensions")),
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tau_("tau", dict, readInt(dict.lookup("size"))),
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tauDimensions_(dict.lookup("tauDimensions")),
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nu_(dict.lookup("nu"))
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::PronyViscoelastic::~PronyViscoelastic()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField> Foam::PronyViscoelastic::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::PronyViscoelastic::E(scalar t) const
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{
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scalar E = 0.0;
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E = k_[0];
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for(int i=1; i<k_.size(); i++)
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{
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E += k_[i]*exp(-t/tau_[i]);
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}
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if(t < 0)
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{
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E = 0;
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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", kDimensions_, 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::PronyViscoelastic::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::PronyViscoelastic::J(scalar t) const
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{
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notImplemented(type() + "::J(scalar t)");
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return 1.0/E(t);
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}
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// ************************************************************************* //
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