FresnelLaser.C

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    Copyright (C) 2017 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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#include "FresnelLaser.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
    namespace radiation
    {
        defineTypeNameAndDebug(FresnelLaser, 0);

        addToRunTimeSelectionTable
        (
            reflectionModel,
            FresnelLaser,
            dictionary
        );
    }
}


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

Foam::radiation::FresnelLaser::FresnelLaser
(
    const dictionary& dict,
    const fvMesh& mesh
)
:
    reflectionModel(dict, mesh),
    epsilon_(dict.get<scalar>("epsilon"))
{}


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

Foam::scalar Foam::radiation::FresnelLaser::rho
(
    const scalar cosTheta
) const
{
    //scalar cosTheta = cos(incidentAngle);

    scalar rho =
        0.5
      * (
            (1 + sqr(1 - epsilon_*cosTheta))/(1 + sqr(1 + epsilon_*cosTheta))
        +
            (sqr(epsilon_) - 2*epsilon_*cosTheta + 2*sqr(cosTheta))
          /
            (sqr(epsilon_) + 2*epsilon_*cosTheta + 2*sqr(cosTheta))
        );

    return rho;
}


Foam::vector Foam::radiation::FresnelLaser::R
(
    const vector& i,
    const vector& n
) const
{
    return  i + 2.0*(-i & n) * n;
}


// ************************************************************************* //