multiphaseSystem.H

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2013-2015 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::multiphaseSystem
 
Description
    Class which solves the volume fraction equations for two phases.
 
SourceFiles
    multiphaseSystem.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef multiphaseSystem_H
#define multiphaseSystem_H
 
#include "phaseSystem.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class dragModel;
class virtualMassModel;
 
/*---------------------------------------------------------------------------*\
                         Class multiphaseSystem Declaration
\*---------------------------------------------------------------------------*/
 
class multiphaseSystem
:
    public phaseSystem
{
    // Private data
 
        volScalarField alphas_;
 
        typedef HashTable<scalar, phasePairKey, phasePairKey::hash>
            cAlphaTable;
 
        cAlphaTable cAlphas_;
 
        //- Stabilisation for normalisation of the interface normal
        const dimensionedScalar deltaN_;
 
        //- Conversion factor for degrees into radians
        static const scalar convertToRad;
 
 
    // Private member functions
 
        void calcAlphas();
 
        void solveAlphas();
 
        tmp<surfaceVectorField> nHatfv
        (
            const volScalarField& alpha1,
            const volScalarField& alpha2
        ) const;
 
        tmp<surfaceScalarField> nHatf
        (
            const volScalarField& alpha1,
            const volScalarField& alpha2
        ) const;
 
        void correctContactAngle
        (
            const phaseModel& alpha1,
            const phaseModel& alpha2,
            surfaceVectorField::GeometricBoundaryField& nHatb
        ) const;
 
        tmp<volScalarField> K
        (
            const phaseModel& alpha1,
            const phaseModel& alpha2
        ) const;
 
 
        //- Return the drag coefficient for phase pair
        virtual tmp<volScalarField> Kd(const phasePairKey& key) const = 0;
 
        //- Return the face drag coefficient for phase pair
        virtual tmp<surfaceScalarField> Kdf(const phasePairKey& key) const = 0;
 
        //- Return the virtual mass coefficient for phase pair
        virtual tmp<volScalarField> Vm(const phasePairKey& key) const = 0;
 
        //- Return the face virtual mass coefficient for phase pair
        virtual tmp<surfaceScalarField> Vmf(const phasePairKey& key) const = 0;
 
        //- Return the turbulent diffusivity for phase pair
        //  Multiplies the phase-fraction gradient
        virtual tmp<volScalarField> D(const phasePairKey& key) const = 0;
 
        //- Return the interfacial mass flow rate for phase pair
        virtual tmp<volScalarField> dmdt(const phasePairKey& key) const = 0;
 
 
public:
 
    //- Runtime type information
    TypeName("multiphaseSystem");
 
    // Declare runtime construction
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            multiphaseSystem,
            dictionary,
            (
                const fvMesh& mesh
            ),
            (mesh)
        );
 
 
    // Constructors
 
        //- Construct from fvMesh
        multiphaseSystem(const fvMesh&);
 
 
    //- Destructor
    virtual ~multiphaseSystem();
 
 
    // Selectors
 
        static autoPtr<multiphaseSystem> New
        (
            const fvMesh& mesh
        );
 
 
    // Member Functions
 
        //- Return the drag coefficient for all phase-pairs
        virtual const phaseSystem::KdTable& Kds() const = 0;
 
        //- Return the drag coefficient for phase
        virtual tmp<volScalarField> Kd(const phaseModel& phase) const = 0;
 
        //- Return the combined force (lift + wall-lubrication) for phase pair
        virtual autoPtr<PtrList<Foam::volVectorField> > Fs() const = 0;
 
        //- Return the turbulent dispersion force on faces for phase pair
        virtual autoPtr<PtrList<Foam::surfaceScalarField> > phiDs
        (
            const PtrList<volScalarField>& rAUs
        ) const = 0;
 
        //- Return true if there is mass transfer for phase
        virtual bool transfersMass(const phaseModel& phase) const = 0;
 
        //- Return the total interfacial mass transfer rate for phase
        virtual tmp<volScalarField> dmdt(const phaseModel& phase) const = 0;
 
        //- Return the momentum transfer matrices
        virtual autoPtr<momentumTransferTable> momentumTransfer() const = 0;
 
        //- Return the heat transfer matrices
        virtual autoPtr<heatTransferTable> heatTransfer() const = 0;
 
        //- Return the mass transfer matrices
        virtual autoPtr<massTransferTable> massTransfer() const = 0;
 
        tmp<surfaceScalarField> surfaceTension(const phaseModel& phase) const;
 
        //- Indicator of the proximity of the interface
        //  Field values are 1 near and 0 away for the interface.
        tmp<volScalarField> nearInterface() const;
 
        //- Solve for the phase fractions
        virtual void solve();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "multiphaseSystemI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //