piecewiseLinearRamp.C

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    Copyright (C) 2012-2015 OpenFOAM Foundation
    Copyright (C) 2018 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "piecewiseLinearRamp.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    defineTypeNameAndDebug(piecewiseLinearRamp, 0);
    addToRunTimeSelectionTable
    (
        faceAreaWeightModel,
        piecewiseLinearRamp,
        dictionary
    );
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::piecewiseLinearRamp::piecewiseLinearRamp
(
    const dictionary& faceAreaWeightDict
)
:
    faceAreaWeightModel(typeName, faceAreaWeightDict),
    lAF_(coeffDict().get<scalar>("lowerAreaFraction")),
    uAF_(coeffDict().get<scalar>("upperAreaFraction"))
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::scalar
Foam::piecewiseLinearRamp::faceAreaWeight(scalar faceAreaFraction) const
{
    if (faceAreaFraction < lAF_)
    {
        return 0;
    }
    else if (faceAreaFraction < uAF_)
    {
        return faceAreaFraction/((uAF_ - lAF_)) - lAF_/(uAF_ - lAF_);
    }
 
    return 1;
}
 
 
// ************************************************************************* //