120 lines
3.2 KiB
C
120 lines
3.2 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 (C) 2016 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 "BetaFunction.H"
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#include "error.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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// const scalar Foam::CMC::BetaFunction::staticData();
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// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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void Foam::CMC::BetaFunction::_setParameters()
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{
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scalar gamma = mf_*(1.0 - mf_)/(mfVar_ + SMALL) - 1.0;
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if (gamma < SMALL || (mfVar_)/(mf_*(1 - mf_) + SMALL) < 0.001)
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{
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fdelta_ = true;
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}
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else
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{
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a_ = max(mf_*gamma, 0.0);
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b_ = max((1.0 - mf_)*gamma, 0.0);
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if(a_ < 1.0)
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{
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delta0_ = true;
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}
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if(b_ < 1.0)
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{
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delta1_ = true;
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}
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_limitAB();
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}
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}
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void Foam::CMC::BetaFunction::_limitAB()
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{
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scalar fmax = 1.0/(1.0 + (b_ - 1.0)/(a_ - 1.0));
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if(a_ > 500.0)
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{
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a_ = 500.0;
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b_ = (a_ - 1.0 - fmax*(a_ - 2.0))/fmax;
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}
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else if(b_ > 500.0)
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{
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b_ = 500.0;
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a_ = (1.0 + fmax*(b_ - 2.0))/(1.0 - fmax);
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}
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}
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// * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * * //
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::CMC::BetaFunction::BetaFunction(const scalar mf, const scalar mfVar)
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:
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mf_(mf),
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mfVar_(mfVar),
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a_(0.0),
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b_(0.0),
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fdelta_(false),
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delta0_(false),
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delta1_(false)
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{
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_setParameters();
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}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::CMC::BetaFunction::~BetaFunction()
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{}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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// * * * * * * * * * * * * * * Member Operators * * * * * * * * * * * * * * //
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// * * * * * * * * * * * * * * Friend Functions * * * * * * * * * * * * * * //
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// * * * * * * * * * * * * * * Friend Operators * * * * * * * * * * * * * * //
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// ************************************************************************* //
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