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a752d3e588
Currently this is implemented only for the Antoine equation, for the other more complex models an iterative inversion from pressure to temperature is required.
128 lines
3.3 KiB
C
128 lines
3.3 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) 2015 OpenFOAM Foundation
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "ArdenBuck.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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namespace saturationModels
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{
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defineTypeNameAndDebug(ArdenBuck, 0);
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addToRunTimeSelectionTable(saturationModel, ArdenBuck, dictionary);
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}
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}
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static const Foam::dimensionedScalar zeroC("", Foam::dimTemperature, 273.15);
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static const Foam::dimensionedScalar A("", Foam::dimPressure, 611.21);
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static const Foam::dimensionedScalar B("", Foam::dimless, 18.678);
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static const Foam::dimensionedScalar C("", Foam::dimTemperature, 234.5);
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static const Foam::dimensionedScalar D("", Foam::dimTemperature, 257.14);
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField>
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Foam::saturationModels::ArdenBuck::xByTC
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(
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const volScalarField& TC
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) const
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{
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return (B - TC/C)/(D + TC);
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::saturationModels::ArdenBuck::ArdenBuck(const dictionary& dict)
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:
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saturationModel()
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::saturationModels::ArdenBuck::~ArdenBuck()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField>
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Foam::saturationModels::ArdenBuck::pSat
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(
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const volScalarField& T
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) const
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{
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volScalarField TC(T - zeroC);
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return A*exp(TC*xByTC(TC));
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}
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Foam::tmp<Foam::volScalarField>
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Foam::saturationModels::ArdenBuck::pSatPrime
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(
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const volScalarField& T
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) const
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{
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volScalarField TC(T - zeroC);
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volScalarField x(xByTC(TC));
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return A*exp(TC*x)*(D*x - TC/C)/(D + TC);
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}
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Foam::tmp<Foam::volScalarField>
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Foam::saturationModels::ArdenBuck::lnPSat
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(
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const volScalarField& T
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) const
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{
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volScalarField TC(T - zeroC);
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return log(A.value()) + TC*xByTC(TC);
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}
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Foam::tmp<Foam::volScalarField>
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Foam::saturationModels::ArdenBuck::Tsat
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(
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const volScalarField& p
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) const
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{
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notImplemented
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(
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"saturationModels::ArdenBuck::Tsat(const volScalarField& p)"
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);
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return volScalarField::null();
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}
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// ************************************************************************* //
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