faceZoneReferenceTemperature.H

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    Copyright (C) 2022 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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Class
    Foam::heatTransferCoeffModels::faceZoneReferenceTemperature
 
Description
    Heat transfer coefficient calculation that employs the area-average
    temperature of a specified face zone as the reference temperature.
 
    The heat transfer coefficient is calculated by:
 
    \f[
        h = \frac{q}{T_{ref} - T_p}
    \f]
 
    where
    \vartable
      h       | Heat transfer coefficient                         [W/m^2/K]
      q       | Heat flux                                         [W/m^2]
      T_{ref} | Area average of reference face zone temperature   [K]
      T_p     | Temperature field of current patch                [K]
    \endvartable
 
Usage
    Minimal example by using \c system/controlDict.functions:
    \verbatim
    heatTransferCoeffFO
    {
        // Inherited entries
        ...
 
        // Mandatory entries
        htcModel            faceZoneReferenceTemperature;
        referenceFaceZone   <word>;
 
        // Optional entries
        referenceRegion     <word>;
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                            | Type | Reqd | Deflt
      htcModel  | Model name: faceZoneReferenceTemperature  | word | yes  | -
      referenceFaceZone | Name of reference face zone    | word | yes  | -
      referenceRegion | Name of region that reference face zone resides  <!--
                -->                                      | word | no   | region0
    \endtable
 
SourceFiles
    faceZoneReferenceTemperature.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef heatTransferCoeffModels_faceZoneReferenceTemperature_H
#define heatTransferCoeffModels_faceZoneReferenceTemperature_H
 
#include "heatTransferCoeffModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace heatTransferCoeffModels
{
 
/*---------------------------------------------------------------------------*\
                Class faceZoneReferenceTemperature Declaration
\*---------------------------------------------------------------------------*/
 
class faceZoneReferenceTemperature
:
    public heatTransferCoeffModel
{
    // Private Data
 
        //- Patch index of reference face zone
        label faceZonei_;
 
        //- Name of region that the reference face zone resides
        word refRegionName_;
 
        //- Local list of face IDs
        labelList faceId_;
 
        //- Local list of patch ID per face
        labelList facePatchId_;
 
 
    // Private Member Functions
 
        //- Set faces to evaluate based on a face zone
        void setFaceZoneFaces(const dictionary& dict);
 
        //- Return area average of face-zone temperature field
        scalar faceZoneAverageTemperature();
 
        //- Set the heat transfer coefficient
        virtual void htc
        (
            volScalarField& htc,
            const FieldField<Field, scalar>& q
        );
 
 
public:
 
    //- Runtime type information
    TypeName("faceZoneReferenceTemperature");
 
 
    // Constructors
 
        //- Construct from components
        faceZoneReferenceTemperature
        (
            const dictionary& dict,
            const fvMesh& mesh,
            const word& TName
        );
 
        //- No copy construct
        faceZoneReferenceTemperature(const faceZoneReferenceTemperature&) = delete;
 
        //- No copy assignment
        void operator=(const faceZoneReferenceTemperature&) = delete;
 
 
    //- Destructor
    virtual ~faceZoneReferenceTemperature() = default;
 
 
    // Member Functions
 
        //- Read the function-object dictionary
        virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace heatTransferCoeffModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //