fluxLimitedLangmuirHinshelwoodReactionRate.H

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Class
    Foam::fluxLimitedLangmuirHinshelwoodReactionRate

Description
    Langmuir-Hinshelwood reaction rate for gaseous reactions on surfaces
    including the optional flux limiter of Waletzko and Schmidt.

    References:
    \verbatim
        Hinshelwood, C.N. (1940).
        The Kinetics of Chemical Change.
        Oxford Clarendon Press

        Waletzko, N., & Schmidt, L. D. (1988).
        Modeling catalytic gauze reactors: HCN synthesis.
        AIChE journal, 34(7), 1146-1156.
    \endverbatim

SourceFiles
    fluxLimitedLangmuirHinshelwoodReactionRateI.H

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

#ifndef fluxLimitedLangmuirHinshelwoodReactionRate_H
#define fluxLimitedLangmuirHinshelwoodReactionRate_H

#include "scalarField.H"
#include "typeInfo.H"

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

namespace Foam
{

// Forward declaration of friend functions and operators

class fluxLimitedLangmuirHinshelwoodReactionRate;

Ostream& operator<<
(
    Ostream&,
    const fluxLimitedLangmuirHinshelwoodReactionRate&
);


/*---------------------------------------------------------------------------*\
         Class fluxLimitedLangmuirHinshelwoodReactionRate Declaration
\*---------------------------------------------------------------------------*/

class fluxLimitedLangmuirHinshelwoodReactionRate
{
    // Private data

        //- Number reactants (1 or 2)
        label nReactants_;

        //- Additional adsorbable specie names
        wordList additionalAdsorbableSpecieNames_;

        //- Reactant and additional adsorbable specie indices
        labelList ra_;

        scalar a_;
        scalarList A_;
        scalarList Ta_;
        scalarList beta_;
        scalarList m_;

        bool limited_;
        bool AvUniform_;
        scalar Av_;
        const word AvName_;
        const scalarField& AvField_;
        scalarList nu_;
        scalarList exp_;
        scalarList s_;
        scalarList W_;


    // Private Member Functions

        //- Return either the uniform Av value or the field element
        inline scalar Av(const label li) const;


public:

    // Constructors

        //- Construct from dictionary
        inline fluxLimitedLangmuirHinshelwoodReactionRate
        (
            const speciesTable& species,
            const objectRegistry& ob,
            const dictionary& dict
        );


    // Member Functions

        //- Return the type name
        static word type()
        {
            return "fluxLimitedLangmuirHinshelwood";
        }

        inline scalar operator()
        (
            const scalar p,
            const scalar T,
            const scalarField& c,
            const label li
        ) const;

        inline scalar ddT
        (
            const scalar p,
            const scalar T,
            const scalarField& c,
            const label li
        ) const;

        //- Third-body efficiencies (beta = 1-alpha)
        //  non-empty only for third-body reactions
        //  with enhanced molecularity (alpha != 1)
        inline const List<Tuple2<label, scalar>>& beta() const;

        //- Species concentration derivative of the pressure dependent term
        inline void dcidc
        (
            const scalar p,
            const scalar T,
            const scalarField& c,
            const label li,
            scalarField& dcidc
        ) const;

        //- Temperature derivative of the pressure dependent term
        inline scalar dcidT
        (
            const scalar p,
            const scalar T,
            const scalarField& c,
            const label li
        ) const;

        //- Write to stream
        inline void write(Ostream& os) const;


    // Ostream Operator

        inline friend Ostream& operator<<
        (
            Ostream&,
            const fluxLimitedLangmuirHinshelwoodReactionRate&
        );
};


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

} // End namespace Foam

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

#include "fluxLimitedLangmuirHinshelwoodReactionRateI.H"

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

#endif

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