blackBodyEmission.H

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    Copyright (C) 2011-2018 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
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Class
    Foam::radiation::blackBodyEmission
 
Description
    Class black body emission
 
    Table of black body emissive power from:
        Modest, "Radiative Heat Transfer", pp.775-777, 1993
 
SourceFiles
    blackBodyEmission.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef radiation_blackBodyEmission_H
#define radiation_blackBodyEmission_H
 
#include "volFields.H"
#include "dimensionedScalar.H"
#include "interpolationTable.H"
#include "Vector2D.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace radiation
{
 
/*---------------------------------------------------------------------------*\
                      Class blackBodyEmission Declaration
\*---------------------------------------------------------------------------*/
 
class blackBodyEmission
{
public:
 
    //- Static table of black body emissive power
    static const List<Tuple2<scalar, scalar>> emissivePowerTable;
 
 
private:
 
    // Private data
 
        //- Interpolation table of black body emissive power
        mutable interpolationTable<scalar> table_;
 
        //- Constant C1
        const dimensionedScalar C1_;
 
        //- Constant C2
        const dimensionedScalar C2_;
 
        // Ptr List for black body emission energy field for each wavelength
        PtrList<volScalarField> bLambda_;
 
        // Reference to the temperature field
        const volScalarField& T_;
 
 
    // Private Member Functions
 
        scalar fLambdaT(const scalar lambdaT) const;
 
 
public:
 
    // Constructors
 
        //- Construct from components
        blackBodyEmission
        (
            const label nLambda,
            const volScalarField& T
        );
 
 
    //- Destructor
    ~blackBodyEmission();
 
 
    // Member functions
 
        // Access
 
            //- Black body spectrum
            inline const volScalarField& bLambda(const label lambdaI) const
            {
                return bLambda_[lambdaI];
            }
 
            //- Spectral emission for the black body at T and lambda
            inline dimensionedScalar EblambdaT
            (
                const dimensionedScalar& T,
                const scalar lambda
            ) const
            {
                return (C1_/(pow5(lambda)*(exp(C2_/(lambda*T)) - 1.0)));
            }
 
            //- Proportion of total energy at T from lambda1 to lambda2
            tmp<Foam::volScalarField> deltaLambdaT
            (
                const volScalarField& T,
                const Vector2D<scalar>& band
            ) const;
 
            //- Integral energy at T from lambda1 to lambda2
            tmp<Foam::volScalarField> EbDeltaLambdaT
            (
                const volScalarField& T,
                const Vector2D<scalar>& band
            ) const;
 
    // Edit
 
        // Update black body emission
        void correct(const label lambdaI, const Vector2D<scalar>& band);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
} // End namespace radiation
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //