absorptionCoeffs.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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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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Class
    Foam::absorptionCoeffs
 
Description
    Absorption coefficients class used in greyMeanAbsorptionEmission and
    wideBandAbsorptionEmission
 
SourceFiles
    absorptionCoeffs.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef absorptionCoeffs_H
#define absorptionCoeffs_H
 
#include "List.H"
#include "IOstreams.H"
#include "IOdictionary.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace radiation
{
 
/*---------------------------------------------------------------------------*\
                      Class absorptionCoeffs Declaration
\*---------------------------------------------------------------------------*/
 
class absorptionCoeffs
{
public:
 
    // Public data members
 
        static const int nCoeffs_ = 6;
        typedef FixedList<scalar, nCoeffs_> coeffArray;
 
 
private:
 
    // Private data
 
        // Temperature limits of applicability for functions
 
            scalar Tcommon_;
 
            scalar Tlow_;
 
            scalar Thigh_;
 
 
        // Polynomial using inverse temperatures
        bool invTemp_;
 
        coeffArray highACoeffs_;
        coeffArray lowACoeffs_;
 
 
    // Private Member Functions
 
        //- Check given temperature is within the range of the fitted coeffs
        void checkT(const scalar T) const;
 
 
public:
 
    // Constructors
 
        //- Construct from Istream
        absorptionCoeffs(Istream&);
 
        // Null constructor
        absorptionCoeffs()
        {}
 
 
    //- Destructor
    ~absorptionCoeffs();
 
 
    // Member functions
 
        //- Return the coefficients corresponding to the given temperature
        const coeffArray& coeffs(const scalar T) const;
 
        // Initialise from a dictionary
        void initialise(const dictionary&);
 
        // Initialise from an Istream
        void initialise(Istream&);
 
 
    // Access Functions
 
        inline bool invTemp() const;
 
        inline scalar Tcommon() const;
 
        inline scalar Tlow() const;
 
        inline scalar Thigh() const;
 
        inline const coeffArray& highACoeffs() const;
 
        inline const coeffArray& lowACoeffs() const;
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
} // End namespace radiation
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "absorptionCoeffsI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //