Lee.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2017-2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    You should have received a copy of the GNU General Public License
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Class
    Foam::meltingEvaporationModels::Lee
 
Description
    Mass transfer Lee model. Simple model driven by field value difference as:
 
    \f[
        \dot{m} = C \rho \alpha (T - T_{activate})/T_{activate}
    \f]
 
    where C is a model constant.
 
    if C > 0:
    \f[
        \dot{m} = C \rho \alpha (T - T_{activate})/T_{activate}
    \f]
        for \f[ T > T_{activate} \f]
 
    and
 
        \f[ mDot = 0.0 \f]  for \f[  T < T_{activate} \f]
 
 
    if C < 0:
    \f[
        \dot{m} = -C \rho \alpha (T_{activate} - T)/T_{activate}
    \f]
        for \f[ T < T_{activate} \f]
 
    and
        \f[ \dot{m} = 0.0 \f] for \f[ T > T_{activate} \f]
 
    Based on the reference:
    -# W. H. Lee. "A Pressure Iteration Scheme for Two-Phase Modeling".
    Technical Report LA-UR 79-975. Los Alamos Scientific Laboratory,
    Los Alamos, New Mexico. 1979.
 
Usage
    Example usage:
    \verbatim
        massTransferModel
        (
            (solid to liquid)
            {
                type            Lee;
                C               40;
                Tactivate       302.78;
            }
        );
    \endverbatim
 
    Where:
 
    \table
        Property    | Description            | Required    | Default value
        Tactivate   | Activation temperature | yes
        C           | Model constant         | yes
        includeVolChange    | Volumen change  | no          | yes
        species     | Specie name on the other phase | no   | none
    \endtable
 
SourceFiles
    Lee.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef meltingEvaporationModels_Lee_H
#define meltingEvaporationModels_Lee_H
 
#include "InterfaceCompositionModel.H"
 
// * * * * * * * * * * * * * * * * *  * * * * * * * * * * * * * * * * * * * *//
 
namespace Foam
{
namespace meltingEvaporationModels
{
 
/*---------------------------------------------------------------------------*\
                             Class Lee Declaration
\*---------------------------------------------------------------------------*/
 
template<class Thermo, class OtherThermo>
class Lee
:
    public InterfaceCompositionModel<Thermo, OtherThermo>
{
    // Private Data
 
        //- Condensation coefficient [1/s]
        dimensionedScalar C_;
 
        //- Phase transition temperature
        const dimensionedScalar Tactivate_;
 
        //- Phase minimum value for activation
        scalar alphaMin_;
 
 
public:
 
    //- Runtime type information
    TypeName("Lee");
 
 
    // Constructors
 
        //- Construct from components
        Lee
        (
            const dictionary& dict,
            const phasePair& pair
        );
 
 
    //- Destructor
    virtual ~Lee() = default;
 
 
    // Member Functions
 
        //- Explicit total mass transfer coefficient
        virtual tmp<volScalarField> Kexp
        (
            const volScalarField& field
        );
 
        //- Implicit mass transfer coefficient
        virtual tmp<volScalarField> KSp
        (
            label modelVariable,
            const volScalarField& field
        );
 
        //- Explicit mass transfer coefficient
        virtual tmp<volScalarField> KSu
        (
            label modelVariable,
            const volScalarField& field
        );
 
        //- Return T transition between phases
        virtual const dimensionedScalar& Tactivate() const noexcept
        {
            return Tactivate_;
        }
 
        //- Add/subtract alpha*div(U) as a source term
        //- for alpha, substituting div(U) = mDot(1/rho1 - 1/rho2)
        virtual bool includeDivU() const noexcept
        {
            return true;
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace meltingEvaporationModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "Lee.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //