piecewiseLinearRamp.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
     \\/     M anipulation  |
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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
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
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\*---------------------------------------------------------------------------*/
 
#include "piecewiseLinearRamp.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
defineTypeNameAndDebug(piecewiseLinearRamp, 0);
addToRunTimeSelectionTable
(
    faceAreaWeightModel,
    piecewiseLinearRamp,
    dictionary
);
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
piecewiseLinearRamp::piecewiseLinearRamp
(
    const dictionary& faceAreaWeightDict
)
:
    faceAreaWeightModel(typeName, faceAreaWeightDict),
    lAF_(readScalar(coeffDict().lookup("lowerAreaFraction"))),
    uAF_(readScalar(coeffDict().lookup("upperAreaFraction")))
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
scalar piecewiseLinearRamp::faceAreaWeight(scalar faceAreaFraction) const
{
    if (faceAreaFraction < lAF_)
    {
        return 0;
    }
    else if (faceAreaFraction < uAF_)
    {
        return faceAreaFraction/((uAF_ - lAF_)) - lAF_/(uAF_ - lAF_);
    }
    else
    {
        return 1;
    }
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //