VoFSolidificationMelting.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::fv::VoFSolidificationMelting
 
Description
    Solidification and melting model for VoF simulations.
 
    The presence of the solid phase in the flow field is incorporated into the
    model as a momentum porosity contribution; the energy associated with the
    phase change is added as an enthalpy contribution.  The solid fraction as a
    function of temperature \c alphaSolidT is specified as a Foam::Function1.
 
    The model writes the field \c alpha[01].solid which can be visualised to to
    show the solid distribution.
 
Usage
    Example usage:
    \verbatim
    VoFSolidificationMelting1
    {
        type            VoFSolidificationMelting;
 
        cellZone        solidZone;
 
        alphaSolidT     table
        (
            (330 1)
            (335 0)
        );
 
        L               334000;
    }
    \endverbatim
 
    Where:
    \table
        Property     | Description             | Required    | Default value
        alphaSolidT  | Solid fraction as function of temperature | yes |
        L            | Latent heat of fusion [J/kg] | yes    |
        relax        | Relaxation coefficient [0-1] | no     | 0.9
        Cu           | Model coefficient       | no          | 100000
        q            | Model coefficient       | no          | 0.001
    \endtable
 
See also
    Foam::fv::solidificationMeltingSource
    Foam::Function1
 
SourceFiles
    VoFSolidificationMelting.C
    VoFSolidificationMeltingIO.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef VoFSolidificationMelting_H
#define VoFSolidificationMelting_H
 
#include "fvModel.H"
#include "fvCellZone.H"
#include "fvMesh.H"
#include "volFields.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class compressibleTwoPhaseVoFMixture;
 
namespace fv
{
 
/*---------------------------------------------------------------------------*\
               Class VoFSolidificationMelting Declaration
\*---------------------------------------------------------------------------*/
 
class VoFSolidificationMelting
:
    public fvModel
{
    // Private Data
 
        //- The cellZone the fvConstraint applies to
        fvCellZone zone_;
 
        //- Solid fraction as a function of temperature
        autoPtr<Function1<scalar>> alphaSolidT_;
 
        //- Latent heat of fusion [J/kg]
        dimensionedScalar L_;
 
        //- Phase fraction under-relaxation coefficient
        scalar relax_;
 
        //- Mushy region momentum sink coefficient [1/s]; default = 10^5
        scalar Cu_;
 
        //- Coefficient used in porosity calc - default = 0.001
        scalar q_;
 
        //- VoF thermo
        const compressibleTwoPhaseVoFMixture& thermo_;
 
        //- Solid phase fraction
        mutable volScalarField alphaSolid_;
 
 
    // Private Member Functions
 
        //- Non-virtual read
        void readCoeffs(const dictionary& dict);
 
        //- Return the name of the solid phase fraction
        word alphaSolidName() const;
 
        //- Helper function to apply to the energy equation
        template<class RhoFieldType>
        void apply(const RhoFieldType& rho, fvMatrix<scalar>& eqn) const;
 
 
public:
 
    //- Runtime type information
    TypeName("VoFSolidificationMelting");
 
 
    // Constructors
 
        //- Construct from explicit source name and mesh
        VoFSolidificationMelting
        (
            const word& name,
            const word& modelType,
            const fvMesh& mesh,
            const dictionary& dict
        );
 
        //- Disallow default bitwise copy construction
        VoFSolidificationMelting
        (
            const VoFSolidificationMelting&
        ) = delete;
 
 
    // Member Functions
 
        // Checks
 
            //- Return the list of fields for which the option adds source term
            //  to the transport equation
            virtual wordList addSupFields() const;
 
 
        // Add explicit and implicit contributions to compressible equation
 
            //- Add explicit contribution to phase energy equation
            virtual void addSup
            (
                const volScalarField& alpha,
                const volScalarField& rho,
                const volScalarField& he,
                fvMatrix<scalar>& eqn
            ) const;
 
            //- Add implicit contribution to mixture momentum equation
            virtual void addSup
            (
                const volScalarField& rho,
                const volVectorField& U,
                fvMatrix<vector>& eqn
            ) const;
 
 
        // Mesh motion
 
            //- 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&);
 
            //- Update for mesh motion
            virtual bool movePoints();
 
 
        //- Correct the model
        virtual void correct();
 
 
        // IO
 
            //- Read source dictionary
            virtual bool read(const dictionary& dict);
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const VoFSolidificationMelting&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //