extrudeModel.C

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2017 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "extrudeModel.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    defineTypeNameAndDebug(extrudeModel, 0);
    defineRunTimeSelectionTable(extrudeModel, dictionary);
}
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::extrudeModel::extrudeModel
(
    const word& modelType,
    const dictionary& dict
)
:
    nLayers_(dict.lookupOrDefault<label>("nLayers", 1)),
    expansionRatio_(dict.lookupOrDefault<scalar>("expansionRatio", 1)),
    coeffDict_(dict.optionalSubDict(modelType + "Coeffs"))
{
    DebugInfo
        << "Selected extrudeModel for " << modelType
        << " using coeffs " << coeffDict_ << nl;
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::label Foam::extrudeModel::nLayers() const
{
    return nLayers_;
}
 
 
Foam::scalar Foam::extrudeModel::expansionRatio() const
{
    return expansionRatio_;
}
 
 
Foam::scalar Foam::extrudeModel::sumThickness(const label layer) const
{
    // 1+r+r^2+ .. +r^(n-1) = (1-r^n)/(1-r)
 
    if (mag(1.0-expansionRatio_) < SMALL)
    {
        return scalar(layer)/nLayers_;
    }
    else
    {
        return
            (1.0-pow(expansionRatio_, layer))
          / (1.0-pow(expansionRatio_, nLayers_));
    }
}
 
 
// ************************************************************************* //