coefficientWilkeMulticomponentMixture.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::coefficientWilkeMulticomponentMixture
 
Description
    Thermophysical properties mixing class which applies mass-fraction weighted
    mixing to the thermodynamic coefficients and Wilke's equation to
    transport properties.
 
    Reference:
    \verbatim
        Wilke, C. R. (1950).
        A viscosity equation for gas mixtures.
        The journal of chemical physics, 18(4), 517-519.
    \endverbatim
 
SourceFiles
    coefficientWilkeMulticomponentMixture.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef coefficientWilkeMulticomponentMixture_H
#define coefficientWilkeMulticomponentMixture_H
 
#include "multicomponentMixture.H"
#include "FieldListSlice.H"
#include "scalarMatrices.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
            Class coefficientWilkeMulticomponentMixture Declaration
\*---------------------------------------------------------------------------*/
 
template<class ThermoType>
class coefficientWilkeMulticomponentMixture
:
    public multicomponentMixture<ThermoType>
{
public:
 
    // Public Classes/Typedefs
 
        //- Mixing type for thermodynamic properties
        typedef typename ThermoType::thermoType thermoMixtureType;
 
        //- Mixing type for transport properties
        class transportMixtureType
        {
            // Private Data
 
                //- List of specie thermo
                const PtrList<ThermoType>& specieThermos_;
 
                //- List of molecular weights
                scalarList M_;
 
                //- Matrix of (4/sqrt(2.0))*sqrt(1 + M_[i]/M_[j])
                scalarSquareMatrix A_;
 
                //- Matrix of sqrt(M_[j]/M_[i])
                scalarSquareMatrix B_;
 
                //- List of mole fractions
                mutable scalarList X_;
 
                //- List of specie viscosities
                mutable scalarList mu_;
 
                //- List of Wilke weights
                mutable scalarList w_;
 
                //- Viscosity cache state to avoid recalculation of the Wilke
                //  weight for kappa
                mutable bool muCached_;
 
                //- Calculate the Wilke weights and store in w_
                void WilkeWeights(const scalar p, const scalar T) const;
 
 
        public:
 
            friend class coefficientWilkeMulticomponentMixture;
 
 
            // Constructors
 
                //- Construct from list of specie thermo
                transportMixtureType(const PtrList<ThermoType>& specieThermos);
 
 
            // Transport properties
 
                //- Dynamic viscosity [kg/m/s]
                scalar mu(const scalar p, const scalar T) const;
 
                //- Thermal conductivity [W/m/K]
                scalar kappa(const scalar p, const scalar T) const;
        };
 
 
private:
 
    // Private Data
 
        //- Temporary storage for the cell/face mixture thermo data
        mutable thermoMixtureType mixture_;
 
        //- Mutable storage for the cell/face mixture transport data
        mutable transportMixtureType transportMixture_;
 
 
public:
 
    // Constructors
 
        //- Construct from a dictionary
        coefficientWilkeMulticomponentMixture(const dictionary&);
 
        //- Disallow default bitwise copy construction
        coefficientWilkeMulticomponentMixture
        (
            const coefficientWilkeMulticomponentMixture<ThermoType>&
        ) = delete;
 
 
    //- Destructor
    virtual ~coefficientWilkeMulticomponentMixture()
    {}
 
 
    // Member Functions
 
        //- Return the instantiated type name
        static word typeName()
        {
            return
                "coefficientWilkeMulticomponentMixture<"
               + ThermoType::typeName() + '>';
        }
 
        //- Return the mixture for thermodynamic properties
        const thermoMixtureType& thermoMixture
        (
            const scalarFieldListSlice&
        ) const;
 
        //- Return the mixture for transport properties
        const transportMixtureType& transportMixture
        (
            const scalarFieldListSlice&
        ) const;
 
        //- Return the mixture for transport properties
        const transportMixtureType& transportMixture
        (
            const scalarFieldListSlice&,
            const thermoMixtureType&
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "coefficientWilkeMulticomponentMixture.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //