filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.H

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    Copyright (C) 2013-2017 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
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Class
    Foam::filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
 
Description
    Mixed boundary condition for temperature, to be used in the flow and
    pyrolysis regions when a film region model is used.
 
    Example usage:
    \verbatim
    myInterfacePatchName
    {
        type            filmPyrolysisRadiativeCoupledMixed;
        Tnbr            T;
        kappaMethod     fluidThermo;
        kappa           none;
        qr              qr;
        filmDeltaDry    0.0;
        filmDeltaWet    3e-4;
        value           $internalField;
    }
    \endverbatim
 
    Needs to be on underlying mapped(Wall)FvPatch.
    It calculates local field as:
 
    \verbatim
        ratio = (filmDelta - filmDeltaDry)/(filmDeltaWet - filmDeltaDry)
    \endverbatim
 
    when ratio = 1 is considered wet and the film temperature is fixed at
    the wall. If ratio = 0 (dry) it emulates the normal radiative solid BC.
 
    In between ratio 0 and 1 the gradient and value contributions are
    weighted using the ratio field in the following way:
 
    \verbatim
        qConv = ratio*htcwfilm*(Tfilm - *this);
        qRad = (1.0 - ratio)*qr;
    \endverbatim
 
    Then the solid can gain or loose energy through radiation or conduction
    towards the film.
 
    Notes:
    - \c kappaMethod and \c kappa are inherited from temperatureCoupledBase.
    - qr is the radiative flux defined in the radiation model.
 
 
See also
    Foam::temperatureCoupledBase
 
SourceFiles
    filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef filmPyrolysisRadiativeCoupledMixedFvPatchScalarField_H
#define filmPyrolysisRadiativeCoupledMixedFvPatchScalarField_H
 
#include "mixedFvPatchFields.H"
#include "temperatureCoupledBase.H"
#include "thermoSingleLayer.H"
#include "pyrolysisModel.H"
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
    Class filmPyrolysisRadiativeCoupledMixedFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
:
    public mixedFvPatchScalarField,
    public temperatureCoupledBase
{
public:
 
    typedef Foam::regionModels::surfaceFilmModels::thermoSingleLayer
        filmModelType;
 
    typedef Foam::regionModels::pyrolysisModels::pyrolysisModel
        pyrolysisModelType;
 
    typedef filmPyrolysisRadiativeCoupledMixedFvPatchScalarField myType;
 
 
private:
 
    // Private Data
 
        //- Name of film region
        const word filmRegionName_;
 
        //- Name of pyrolysis region
        const word pyrolysisRegionName_;
 
        //- Name of field on the neighbour region
        const word TnbrName_;
 
        //- Name of the radiative heat flux
        const word qrName_;
 
        //- Convective Scaling Factor (as determined by Prateep's tests)
        const scalar convectiveScaling_;
 
        //- Minimum delta film to be considered dry
        const scalar filmDeltaDry_;
 
        //- Maximum delta film to be considered wet
        const scalar filmDeltaWet_;
 
 
    // Private Member Functions
 
        //- Retrieve film model from the database, or FatalError
        const filmModelType& filmModel() const;
 
        //- Retrieve pyrolysis model from the database, or FatalError
        const pyrolysisModelType& pyrModel() const;
 
 
public:
 
    //- Runtime type information
    TypeName("filmPyrolysisRadiativeCoupledMixed");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given
        //  turbulentTemperatureCoupledBaffleMixedFvPatchScalarField onto a
        //  new patch
        filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
        (
            const
            filmPyrolysisRadiativeCoupledMixedFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct as copy setting internal field reference
        filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
        (
            const filmPyrolysisRadiativeCoupledMixedFvPatchScalarField&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Return a clone
        virtual tmp<fvPatchField<scalar>> clone() const
        {
            return fvPatchField<scalar>::Clone(*this);
        }
 
        //- Clone with an internal field reference
        virtual tmp<fvPatchField<scalar>> clone
        (
            const DimensionedField<scalar, volMesh>& iF
        ) const
        {
            return fvPatchField<scalar>::Clone(*this, iF);
        }
 
 
    // Member functions
 
        // Mapping functions
 
            //- Map (and resize as needed) from self given a mapping object
            virtual void autoMap
            (
                const fvPatchFieldMapper&
            );
 
            //- Reverse map the given fvPatchField onto this fvPatchField
            virtual void rmap
            (
                const fvPatchField<scalar>&,
                const labelList&
            );
 
 
        //- Get corresponding K field
        tmp<scalarField> K() const;
 
        //- Update the coefficients associated with the patch field
        virtual void updateCoeffs();
 
        //- Write
        virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //