externalWallLayersHeatTransferCoefficient_DimensionedFieldFunction.H

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License
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Class
    Foam::DimensionedFieldFunctions::externalWallLayersHeatTransferCoefficient
 
Description
    Runtime selectable DimensionedFieldFunction providing the heat transfer
    coefficient for a number of layers of conductive materials.
 
    Typically used to provide the thermal resistance or insulation layers with
    the Foam::externalTemperatureFvPatchScalarField boundary condition.
 
Usage
    \table
    Property        | Description               | Required    | Default value
    h               | Heat transfer coefficient [W/m^2/K] | yes |
    thicknessLayers | list of thicknesses per layer [m]   | yes |
    kappaLayers     | list of thermal conductivities per layer [W/m/K] | yes |
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            externalTemperature;
 
        Ta              constant 300.0;
 
        h
        {
            type              externalWallLayersHeatTransferCoefficient;
 
            h                 10.0;
            thicknessLayers   (0.1 0.2 0.3 0.4);
            kappaLayers       (1 2 3 4);
        }
 
        value           $internalField;
    }
    \endverbatim
 
SourceFiles
    externalWallLayersHeatTransferCoefficient_DimensionedFieldFunction.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef externalWallLayersHeatTransferCoefficient_DimensionedFieldFunction_H
#define externalWallLayersHeatTransferCoefficient_DimensionedFieldFunction_H
 
#include "wallLayersHeatTransferCoefficient_DimensionedFieldFunction.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace DimensionedFieldFunctions
{
 
/*---------------------------------------------------------------------------*\
          Class externalWallLayersHeatTransferCoefficient Declaration
\*---------------------------------------------------------------------------*/
 
class externalWallLayersHeatTransferCoefficient
:
    public wallLayersHeatTransferCoefficient
{
    // Private Data
 
        //- External heat transfer coefficient [W/m^2K]
        scalar h_;
 
 
public:
 
    //- Runtime type information
    TypeName("externalWallLayersHeatTransferCoefficient");
 
 
    // Constructors
 
        //- Construct with dictionary to initialise given field
        externalWallLayersHeatTransferCoefficient
        (
            const dictionary& dict,
            DimensionedField<scalar, fvPatch>& field
        );
 
        //- Construct a copy for the given field
        externalWallLayersHeatTransferCoefficient
        (
            const externalWallLayersHeatTransferCoefficient& dff,
            DimensionedField<scalar, fvPatch>& field
        );
 
        //- Construct and return a clone for the specified field
        virtual
        autoPtr<DimensionedFieldFunction<DimensionedField<scalar, fvPatch>>>
        clone(DimensionedField<scalar, fvPatch>& field) const;
 
 
    //- Destructor
    virtual ~externalWallLayersHeatTransferCoefficient()
    {}
 
 
    // Member Functions
 
        //- Evaluate the function and set the field
        virtual void evaluate();
 
        //- Write data to dictionary stream
        virtual void write(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace DimensionedFieldFunctions
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //