contactHeatFluxSource.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2019-2025 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::fa::contactHeatFluxSource
 
Group
    grpFaOptionsSources
 
Description
    Applies contact heat flux between specified \c faMesh
    and \c fvMesh within a specified region for compressible flows.
 
Usage
    Minimal example by using \c constant/faOptions:
    \verbatim
    contactHeatFluxSource1
    {
        // Mandatory entries (unmodifiable)
        type                contactHeatFluxSource;
 
        // Optional entries (unmodifiable)
        Tprimary            <TprimaryFieldName>;
 
        // Optional entries (runtime modifiable)
        Ts                  <TshellName>;
        thicknessLayers     (<layer1> <layer2> ... <layerN>);
 
        // Conditional optional entries (runtime modifiable)
 
            // when the entry "thicknessLayers" is present
            kappaLayers     (<layer1> <layer2> ... <layerN>);
 
        // Mandatory/Optional (inherited) entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                       | Type  | Reqd | Dflt
      type      | Type name: contactHeatFluxSource  | word  | yes  | -
      Ts        | Name of shell temperature field   | word  | no   | Ts(suffix)
      Tprimary  | Name of primary temperature field | word  | no   | T
      thicknessLayers | List of thicknesses of layers | scalarList | no | -
      kappaLayers | List of conductivities of layers | scalarList | cndtnl | -
    \endtable
 
    Fields/variables used:
    \table
      Property  | Description               | Type   | Deflt
      Ts        | Temperature               | shell  | Ts(suffix)
      Tprimary  | Temperature               | volume | T
    \endtable
 
    The inherited entries are elaborated in:
     - \link faOption.H \endlink
     - \link faceSetOption.H \endlink
     - \link temperatureCoupledBase.H \endlink
 
    \b Naming changes from 2506 and earlier:
    \table
      Keyword  | Description               | Keyword (old) | Deflt (old)
      Ts       | Temperature (shell)       | T   | T
    \endtable
    If \c Ts is missing, the keyword \c T is still accepted.
 
SourceFiles
    contactHeatFluxSource.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_fa_contactHeatFluxSource_H
#define Foam_fa_contactHeatFluxSource_H
 
#include "areaFields.H"
#include "PtrList.H"
#include "faceSetOption.H"
#include "temperatureCoupledBase.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fa
{
 
/*---------------------------------------------------------------------------*\
                        Class contactHeatFluxSource Declaration
\*---------------------------------------------------------------------------*/
 
class contactHeatFluxSource
:
    public fa::faceSetOption
{
    // Private Classes
 
         //- Wrapper to make non-abstract
         struct temperatureCoupling : public Foam::temperatureCoupledBase
         {
             // Inherit constructors
             using temperatureCoupledBase::temperatureCoupledBase;
 
             //- The fvPatch
             const fvPatch& patch() const noexcept { return patch_; }
 
             // Dummy implementations
 
             //- Map (and resize as needed) from self given a mapping object
             virtual void autoMap(const fvPatchFieldMapper&)
             {}
 
             // Dummy implementation
             virtual void rmap(const fvPatchField<scalar>&, const labelList&)
             {}
        };
 
 
    // Private Data
 
        //- Name of shell temperature field (default: "T")
        word TName_;
 
        //- Name of volume temperature field (default: "T")
        const word TprimaryName_;
 
        //- Primary (volume) region temperature
        const volScalarField& Tprimary_;
 
        //- Thickness of layers
        scalarList thicknessLayers_;
 
        //- Conductivity of layers
        scalarList kappaLayers_;
 
        //- Total contact resistance
        scalar contactRes_;
 
        //- Current time index (used for updating)
        label curTimeIndex_;
 
        //- Contact coupling (per-patch)
        PtrList<temperatureCoupling> coupling_;
 
 
    // Private Member Functions
 
        //- Return htc [W/m2/K] coupling to the primary region
        tmp<DimensionedField<scalar, areaMesh>> htc() const;
 
 
public:
 
    //- Runtime type information
    TypeName("contactHeatFluxSource");
 
 
    // Constructors
 
        //- Construct from explicit source name and mesh
        contactHeatFluxSource
        (
            const word& sourceName,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh,
            const word& defaultAreaName = word()
        );
 
        //- No copy construct
        contactHeatFluxSource(const contactHeatFluxSource&) = delete;
 
        //- No copy assignment
        void operator=(const contactHeatFluxSource&) = delete;
 
 
    //- Destructor
    virtual ~contactHeatFluxSource() = default;
 
 
    // Member Functions
 
        // Evaluation
 
            //- Add explicit contribution to compressible momentum equation
            virtual void addSup
            (
                const areaScalarField& h,
                const areaScalarField& rho,
                faMatrix<scalar>& eqn,
                const label fieldi
            );
 
 
        // IO
 
            //- Read source dictionary
            virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fa
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 
#endif
 
// ************************************************************************* //