RosinRammler.C

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/*---------------------------------------------------------------------------*\
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#include "RosinRammler.H"
#include <OpenFOAM/addToRunTimeSelectionTable.H>

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    namespace pdfs
    {
        defineTypeNameAndDebug(RosinRammler, 0);
        addToRunTimeSelectionTable(pdf, RosinRammler, dictionary);
    }
}

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::pdfs::RosinRammler::RosinRammler(const dictionary& dict, Random& rndGen)
:
    pdf(typeName, dict, rndGen),
    minValue_(readScalar(pdfDict_.lookup("minValue"))),
    maxValue_(readScalar(pdfDict_.lookup("maxValue"))),
    d_(readScalar(pdfDict_.lookup("d"))),
    n_(readScalar(pdfDict_.lookup("n")))
{
    check();
}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::pdfs::RosinRammler::~RosinRammler()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::scalar Foam::pdfs::RosinRammler::sample() const
{

    scalar K = 1.0 - exp(-pow((maxValue_ - minValue_)/d_, n_));
    scalar y = rndGen_.scalar01();
    scalar x = minValue_ + d_*::pow(-log(1.0 - y*K), 1.0/n_);
    return x;
}


Foam::scalar Foam::pdfs::RosinRammler::minValue() const
{
    return minValue_;
}


Foam::scalar Foam::pdfs::RosinRammler::maxValue() const
{
    return maxValue_;
}


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