ReactingMultiphaseParcel.H

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Class
    Foam::ReactingMultiphaseParcel

Description
    Multiphase variant of the reacting parcel class with one/two-way coupling
    with the continuous phase.

SourceFiles
    ReactingMultiphaseParcelI.H
    ReactingMultiphaseParcel.C
    ReactingMultiphaseParcelIO.C

\*---------------------------------------------------------------------------*/

#ifndef ReactingMultiphaseParcel_H
#define ReactingMultiphaseParcel_H

#include <lagrangianIntermediate/ReactingParcel_.H>
#include <lagrangianIntermediate/ReactingMultiphaseCloud_.H>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

template<class ParcelType>
class ReactingMultiphaseParcel;

template<class ParcelType>
Ostream& operator<<
(
    Ostream&,
    const ReactingMultiphaseParcel<ParcelType>&
);

/*---------------------------------------------------------------------------*\
                 Class ReactingMultiphaseParcel Declaration
\*---------------------------------------------------------------------------*/

template<class ParcelType>
class ReactingMultiphaseParcel
:
    public ReactingParcel<ParcelType>
{
public:

    // IDs of phases in ReacingParcel phase list (Y)

        static const label GAS;
        static const label LIQ;
        static const label SLD;


    //- Class to hold reacting multiphase particle constant properties
    class constantProperties
    :
        public ReactingParcel<ParcelType>::constantProperties
    {
        // Private data

            //- Latent heat of devolatilisation [J/kg]
            const scalar LDevol_;

            //- Fraction of enthalpy retained by parcel due to surface
            //  reactions
            scalar hRetentionCoeff_;


    public:

        //- Constructor
        constantProperties(const dictionary& parentDict);

        // Access

            //- Return const access to the latent heat of devolatilisation
            inline scalar LDevol() const;

            //- Return const access to the fraction of enthalpy retained by
            //  parcel due to surface reactions
            inline scalar hRetentionCoeff() const;
    };


    //- Class used to pass reacting tracking data to the trackToFace function
    class trackData
    :
        public ReactingParcel<ParcelType>::trackData
    {
        // Private data

            //- Reference to the cloud containing this particle
            ReactingMultiphaseCloud<ParcelType>& cloud_;

            //- Particle constant properties
            const constantProperties& constProps_;


    public:

        // Constructors

            //- Construct from components
            inline trackData
            (
                ReactingMultiphaseCloud<ParcelType>& cloud,
                const constantProperties& constProps,
                const interpolation<scalar>& rhoInterp,
                const interpolation<vector>& UInterp,
                const interpolation<scalar>& muInterp,
                const interpolation<scalar>& TInterp,
                const interpolation<scalar>& CpInterp,
                const interpolation<scalar>& pInterp,
                const vector& g
            );


        // Member functions

            //- Return access to the owner cloud
            inline ReactingMultiphaseCloud<ParcelType>& cloud();

            //- Return const access to the constant properties
            inline const constantProperties& constProps() const;
    };


private:

    // Private member functions

        //- Return the mixture effective specific heat capacity
        template<class TrackData>
        scalar cpEff
        (
            TrackData& td,
            const scalar p,
            const scalar T,
            const label idG,
            const label idL,
            const label idS
        ) const;

        //- Return the mixture effective enthalpy
        template<class TrackData>
        scalar HEff
        (
            TrackData& td,
            const scalar p,
            const scalar T,
            const label idG,
            const label idL,
            const label idS
        ) const;

        //- Return the mixture effective latent heat
        template<class TrackData>
        scalar LEff
        (
            TrackData& td,
            const scalar p,
            const scalar T,
            const label idG,
            const label idL,
            const label idS
        ) const;

        //- Update the mass fractions (Y, YGas, YLiquid, YSolid)
        scalar updateMassFractions
        (
            const scalar mass0,
            const scalarField& dMassGas,
            const scalarField& dMassLiquid,
            const scalarField& dMassSolid
        );


protected:

    // Protected data

        // Parcel properties

            //- Mass fractions of gases []
            scalarField YGas_;

            //- Mass fractions of liquids []
            scalarField YLiquid_;

            //- Mass fractions of solids []
            scalarField YSolid_;

            //- Flag to say that the particle is allowed to combust
            //  Only true after volatile content falls below threshold value
            bool canCombust_;


    // Protected member functions

        //- Calculate Devolatilisation
        template<class TrackData>
        void calcDevolatilisation
        (
            TrackData& td,
            const scalar dt,           // timestep
            const scalar Ts,           // Surface temperature
            const scalar d,            // diameter
            const scalar T,            // temperature
            const scalar mass,         // mass
            const scalar mass0,        // mass (initial on injection)
            const label idVolatile,    // id of volatile phase
            const scalar YVolatileTot, // total volatile mass fraction
            const scalarField& YVolatile, // volatile component mass fractions
            bool& canCombust,          // 'can combust' flag
            scalarField& dMassDV,      // mass transfer - local to particle
            scalar& Sh,                // explicit particle enthalpy source
            scalar& N,                 // flux of species emitted from particle
            scalar& NCpW,              // sum of N*Cp*W of emission species
            scalarField& Cs            // carrier conc. of emission species
        ) const;

        //- Calculate surface reactions
        template<class TrackData>
        void calcSurfaceReactions
        (
            TrackData& td,
            const scalar dt,           // timestep
            const label cellI,         // owner cell
            const scalar d,            // diameter
            const scalar T,            // temperature
            const scalar mass,         // mass
            const bool canCombust,     // 'can combust' flag
            const scalar N,            // flux of species emitted from particle
            const scalarField& YMix,   // mixture mass fractions
            const scalarField& YGas,   // gas-phase mass fractions
            const scalarField& YLiquid,// liquid-phase mass fractions
            const scalarField& YSolid, // solid-phase mass fractions
            scalarField& dMassSRGas,   // gas-phase mass transfer - local
            scalarField& dMassSRLiquid,// liquid-phase mass transfer - local
            scalarField& dMassSRSolid, // solid-phase mass transfer - local
            scalarField& dMassSRCarrier, // carrier phase mass transfer
            scalar& Sh,                // explicit particle enthalpy source
            scalar& dhsTrans           // sensible enthalpy transfer to carrier
        ) const;


public:

    // Static data members

        //- String representation of properties
        static string propHeader;

        //- Runtime type information
        TypeName("ReactingMultiphaseParcel");


    friend class Cloud<ParcelType>;


    // Constructors

        //- Construct from owner, position, and cloud owner
        //  Other properties initialised as null
        inline ReactingMultiphaseParcel
        (
            ReactingMultiphaseCloud<ParcelType>& owner,
            const vector& position,
            const label cellI
        );


        //- Construct from components
        inline ReactingMultiphaseParcel
        (
            ReactingMultiphaseCloud<ParcelType>& owner,
            const vector& position,
            const label cellI,
            const label typeId,
            const scalar nParticle0,
            const scalar d0,
            const vector& U0,
            const scalarField& Y0,
            const scalarField& YGas0,
            const scalarField& YLiquid0,
            const scalarField& YSolid0,
            const constantProperties& constProps
        );

        //- Construct from Istream
        ReactingMultiphaseParcel
        (
            const Cloud<ParcelType>& c,
            Istream& is,
            bool readFields = true
        );

        //- Construct as a copy
        ReactingMultiphaseParcel(const ReactingMultiphaseParcel& p);

        //- Construct and return a clone
        autoPtr<ReactingMultiphaseParcel> clone() const
        {
            return
                autoPtr<ReactingMultiphaseParcel>
                (
                    new ReactingMultiphaseParcel(*this)
                );
        }


    // Member Functions

        // Access

            //- Return const access to mass fractions of gases
            inline const scalarField& YGas() const;

            //- Return const access to mass fractions of liquids
            inline const scalarField& YLiquid() const;

            //- Return const access to mass fractions of solids
            inline const scalarField& YSolid() const;

            //- Return const access to the canCombust flag
            inline bool canCombust() const;


        // Edit

            //- Return access to mass fractions of gases
            inline scalarField& YGas();

            //- Return access to mass fractions of liquids
            inline scalarField& YLiquid();

            //- Return access to mass fractions of solids
            inline scalarField& YSolid();

            //- Return access to the canCombust flag
            inline bool& canCombust();


        // Main calculation loop

            //- Set cell values
            template<class TrackData>
            void setCellValues
            (
                TrackData& td,
                const scalar dt,
                const label cellI
            );

            //- Correct cell values using latest transfer information
            template<class TrackData>
            void cellValueSourceCorrection
            (
                TrackData& td,
                const scalar dt,
                const label cellI
            );

            //- Update parcel properties over the time interval
            template<class TrackData>
            void calc
            (
                TrackData& td,
                const scalar dt,
                const label cellI
            );


        // I-O

            //- Read
            static void readFields(Cloud<ParcelType>& c);

            //- Write
            static void writeFields(const Cloud<ParcelType>& c);


    // Ostream Operator

        friend Ostream& operator<< <ParcelType>
        (
            Ostream&,
            const ReactingMultiphaseParcel<ParcelType>&
        );
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "ReactingMultiphaseParcelI.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#ifdef NoRepository
    #include "ReactingMultiphaseParcel.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************ vim: set sw=4 sts=4 et: ************************ //