ReynoldsAnalogy.H

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Class
    Foam::wallHeatTransferCoeffModels::ReynoldsAnalogy
 
Description
    Calculates and writes the estimated flow heat transfer coefficient at wall
    patches as the volScalarField field 'wallHeatTransferCoeff' using Reynolds
    Analogy.
 
    Reynolds Analogy model, given by:
 
    \f[
        htc = 0.5 \rho C_p |U_{ref}| C_f
    \f]
 
    where
    \vartable
        rho       | Density [kg/m^3]
        Cp        | Specific heat capacity [m^2/K/s^2)]
        Uref      | Far field velocity magnitude [m/s]
        Cf        | Skin friction coefficient []
    \endvartable
 
 
    All wall patches are included by default; to restrict the calculation to
    certain patches, use the optional 'patches' entry.
 
    Example of function object specification:
    \verbatim
    ReynoldsAnalogy1
    {
        type       wallHeatTransferCoeff;
        libs       ("libfieldFunctionObjects.so");
        model      ReynoldsAnalogy;
        ...
        region     fluid;
        patches    (".*Wall");
        rho        1.225;
        Cp         1005;
        Uref       1.0;
    }
    \endverbatim
 
Usage
    \table
        Property | Description               | Required | Default value
        type     | type name: wallHeatTransferCoeff | yes   |
        model    | Type name: ReynoldsAnalogy    | no       | kappaEff
        patches  | List of patches to process    | no       | all wall patches
        region   | Region to be evaluated        | no       | default region
        rho      | Density                       | yes      |
        Cp       | Specific heat capacity        | yes      |
        Uref     | Reference velocity magnitude  | yes      | no
    \endtable
 
    Note:
        Cp and rho are required only for incompressible flow calculations.
 
SourceFiles
    ReynoldsAnalogy.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef wallHeatTransferCoeffModels_ReynoldsAnalogy_H
#define wallHeatTransferCoeffModels_ReynoldsAnalogy_H
 
#include "wallHeatTransferCoeffModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace wallHeatTransferCoeffModels
{
 
/*---------------------------------------------------------------------------*\
                       Class ReynoldsAnalogy Declaration
\*---------------------------------------------------------------------------*/
 
class ReynoldsAnalogy
:
    public wallHeatTransferCoeffModel
{
    // Private Data
 
        //- Reference to mesh
        const fvMesh& mesh_;
 
        //- Reference velocity magnitude [m/s]
        dimensionedScalar Uref_;
 
 
    // Private member functions
 
        //- Calculate the wall shear-stress
        tmp<volVectorField> calcShearStress
        (
            const volSymmTensorField& tau
        );
 
 
public:
 
    //- Runtime type information
    TypeName("ReynoldsAnalogy");
 
 
    // Constructors
 
        //- Construct from name, mesh and dict
        ReynoldsAnalogy
        (
            const word& name,
            const fvMesh& mesh,
            const dictionary& dict
        );
 
        //- Disallow default bitwise copy construction
        ReynoldsAnalogy
        (
            const ReynoldsAnalogy&
        ) = delete;
 
 
    //- Destructor
    virtual ~ReynoldsAnalogy();
 
 
    // Member Functions
 
        //- Read the ReynoldsAnalogy data
        virtual bool read(const dictionary&);
 
        //- Calculate the heat transfer coefficient
        virtual tmp<volScalarField> htcByRhoCp
        (
            const momentumTransportModel& mmtm,
            const labelHashSet& patches
        ) const;
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const ReynoldsAnalogy&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace wallHeatTransferCoeffModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //