heatTransfer.H

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License
    This file is part of OpenFOAM.
 
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    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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Class
    Foam::fv::heatTransfer
 
Description
    Model for heat exchange. Requires specification of an ambient temperature
    with which to exchange heat, and a model for the heat transfer coefficient
    (htc) and the area per unit volume (Av). These are then used to apply the
    following source to the energy equation:
 
    \f[
        -htc*Av*(T_a - T)
    \f]
 
    If the semiImplicit option is set, then this becomes:
 
    \f[
        -htc*Av*(T_a - T) + htc*Av/Cp*h - Sp(htc*Av/Cp, h);
    \f]
 
Usage
    Example usage:
    \verbatim
    heatTransfer
    {
        type            heatTransfer;
 
        cellZone        c0;
 
        semiImplicit    no;
 
        Ta              300;
 
        Av              200;
 
        heatTransferCoefficientModel constant;
 
        htc             10;
    }
    \endverbatim
 
See also
    Foam::fv::heatTransferCoefficientModel
 
SourceFiles
    heatTransfer.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef heatTransfer_H
#define heatTransfer_H
 
#include "fvModel.H"
#include "fvCellZone.H"
#include "heatTransferCoefficientModel.H"
#include "heatTransferAv.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                Class heatTransfer Declaration
\*---------------------------------------------------------------------------*/
 
class heatTransfer
:
    public fvModel
{
    // Private data
 
        //- The cellzone the model applies to
        fvCellZone zone_;
 
        //- Name of the phase
        word phaseName_;
 
        //- Flag to activate semi-implicit coupling
        bool semiImplicit_;
 
        //- Name of temperature field; default = "T"
        word TName_;
 
        //- Ambient temperature
        dimensionedScalar Ta_;
 
        //- The heat transfer area per unit volume
        autoPtr<heatTransferAv> heatTransferAv_;
 
        //- The heat transfer model
        autoPtr<heatTransferCoefficientModel> heatTransferCoefficientModel_;
 
 
    // Private member functions
 
        //- Non-virtual read
        void readCoeffs(const dictionary& dict);
 
        //- Source term to energy equation
        template<class AlphaFieldType>
        inline void add
        (
            const AlphaFieldType& alpha,
            fvMatrix<scalar>& eqn
        ) const;
 
 
public:
 
    //- Runtime type information
    TypeName("heatTransfer");
 
 
    // Constructors
 
        //- Construct from dictionary
        heatTransfer
        (
            const word& name,
            const word& modelType,
            const fvMesh& mesh,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~heatTransfer();
 
 
    // Member Functions
 
        // Checks
 
            //- Return the list of fields for which the fvModel adds source term
            //  to the transport equation
            virtual wordList addSupFields() const;
 
 
        // Sources
 
            //- Source term to energy equation
            virtual void addSup
            (
                const volScalarField& he,
                fvMatrix<scalar>& eqn
            ) const;
 
            //- Source term to compressible energy equation
            virtual void addSup
            (
                const volScalarField& rho,
                const volScalarField& he,
                fvMatrix<scalar>& eqn
            ) const;
 
            //- Source term to phase energy equation
            virtual void addSup
            (
                const volScalarField& alpha,
                const volScalarField& rho,
                const volScalarField& he,
                fvMatrix<scalar>& eqn
            ) const;
 
 
        // Correction
 
            //- Correct the model
            virtual void correct();
 
 
        // Mesh changes
 
            //- Update for mesh motion
            virtual bool movePoints();
 
            //- Update topology using the given map
            virtual void topoChange(const polyTopoChangeMap&);
 
            //- Update from another mesh using the given map
            virtual void mapMesh(const polyMeshMap&);
 
            //- Redistribute or update using the given distribution map
            virtual void distribute(const polyDistributionMap&);
 
 
        // IO
 
            //- Read dictionary
            virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //