solidification.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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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::porosityModels::solidification
 
Description
    Simple solidification porosity model
 
    This is a simple approximation to solidification where the solid phase
    is represented as a porous blockage with the drag-coefficient evaluated from
 
        \f[
            S = - \alpha \rho D(T) U
        \f]
 
    where
    \vartable
        \alpha  | Optional phase-fraction of solidifying phase
        D(T)    | User-defined drag-coefficient as function of temperature
    \endvartable
 
    Note that the latent heat of solidification is not included and the
    temperature is unchanged by the modelled change of phase.
 
    Example of the solidification model specification:
    \verbatim
        type            solidification;
 
        solidificationCoeffs
        {
            // Solidify between 330K and 330.5K
            D table
            (
                (330.0     10000) // Solid below 330K
                (330.5     0)     // Liquid above 330.5K
            );
 
            // Optional phase-fraction of solidifying phase
            alpha alpha.liquid;
 
            // Solidification porosity is isotropic
            // use the global coordinate system
            coordinateSystem
            {
                origin  (0 0 0);
                e1      (1 0 0);
                e2      (0 1 0);
            }
        }
    \endverbatim
 
SourceFiles
    solidification.C
    solidificationTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_porosityModels_solidification_H
#define Foam_porosityModels_solidification_H
 
#include "porosityModel.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace porosityModels
{
 
/*---------------------------------------------------------------------------*\
                      Class solidification Declaration
\*---------------------------------------------------------------------------*/
 
class solidification
:
    public porosityModel
{
    // Private Data
 
        //- Name of temperature field, default = "T"
        word TName_;
 
        //- Name of optional phase-fraction field, default = "none"
        word alphaName_;
 
        //- Name of density field, default = "rho"
        word rhoName_;
 
        //- User-defined drag-coefficient as function of temperature
        autoPtr<Function1<scalar>> D_;
 
 
    // Private Member Functions
 
        //- Apply resistance
        template<class AlphaFieldType, class RhoFieldType>
        void apply
        (
            scalarField& Udiag,
            const scalarField& V,
            const AlphaFieldType& alpha,
            const RhoFieldType& rho,
            const volVectorField& U
        ) const;
 
        //- Apply resistance
        template<class AlphaFieldType, class RhoFieldType>
        void apply
        (
            tensorField& AU,
            const AlphaFieldType& alpha,
            const RhoFieldType& rho,
            const volVectorField& U
        ) const;
 
        //- Apply resistance
        template<class RhoFieldType>
        void apply
        (
            scalarField& Udiag,
            const scalarField& V,
            const RhoFieldType& rho,
            const volVectorField& U
        ) const;
 
        //- Apply resistance
        template<class RhoFieldType>
        void apply
        (
            tensorField& AU,
            const RhoFieldType& rho,
            const volVectorField& U
        ) const;
 
        //- No copy construct
        solidification(const solidification&) = delete;
 
        //- No copy assignment
        void operator=(const solidification&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("solidification");
 
    //- Constructor
    solidification
    (
        const word& name,
        const word& modelType,
        const fvMesh& mesh,
        const dictionary& dict,
        const wordRe& cellZoneName
    );
 
    //- Destructor
    virtual ~solidification() = default;
 
 
    // Member Functions
 
        //- Transform the model data wrt mesh changes
        virtual void calcTransformModelData();
 
        //- Calculate the porosity force
        virtual void calcForce
        (
            const volVectorField& U,
            const volScalarField& rho,
            const volScalarField& mu,
            vectorField& force
        ) const;
 
        //- Add resistance
        virtual void correct(fvVectorMatrix& UEqn) const;
 
        //- Add resistance
        virtual void correct
        (
            fvVectorMatrix& UEqn,
            const volScalarField& rho,
            const volScalarField& mu
        ) const;
 
        //- Add resistance
        virtual void correct
        (
            const fvVectorMatrix& UEqn,
            volTensorField& AU
        ) const;
 
 
    // I-O
 
        //- Write
        bool writeData(Ostream& os) const;
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace porosityModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "solidificationTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //