dragModel.H

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2011-2026 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::dragModel
 
Description
    Model for drag between phases
 
SourceFiles
    dragModel.C
    dragModelNew.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef dragModel_H
#define dragModel_H
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "volFields.H"
#include "dictionary.H"
#include "runTimeSelectionTables.H"
#include "BlendedInterfacialModel.H"
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                          Class dragModel Declaration
\*---------------------------------------------------------------------------*/
 
class dragModel
:
    public regIOobject
{
public:
 
    //- Runtime type information
    TypeName("dragModel");
 
 
    // Declare runtime construction
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            dragModel,
            dictionary,
            (
                const dictionary& dict,
                const phaseInterface& interface,
                const bool registerObject
            ),
            (dict, interface, registerObject)
        );
 
 
    // Static Data Members
 
        //- Coefficient dimensions
        static const dimensionSet dimK;
 
 
    // Constructors
 
        // Construct from a dictionary and an interface
        dragModel
        (
            const dictionary& dict,
            const phaseInterface& interface,
            const bool registerObject
        );
 
 
    //- Destructor
    virtual ~dragModel();
 
 
    // Selectors
 
        static autoPtr<dragModel> New
        (
            const dictionary& dict,
            const phaseInterface& interface,
            const bool registerObject = false
        );
 
        static autoPtr<dragModel> New
        (
            const UPtrList<const dictionary>& subDicts,
            const phaseInterface& interface
        );
 
 
    // Member Functions
 
        //- Return the drag coefficient K
        //  used in the momentum equations
        //    ddt(alpha1*rho1*U1) + ... = ... K*(U1-U2)
        //    ddt(alpha2*rho2*U2) + ... = ... K*(U2-U1)
        virtual tmp<volScalarField> K() const = 0;
 
        //- Return the drag coefficient Kf
        //  used in the face-momentum equations
        virtual tmp<surfaceScalarField> Kf() const = 0;
 
        //- Dummy write for regIOobject
        bool writeData(Ostream& os) const;
};
 
 
/*---------------------------------------------------------------------------*\
                      Class blendedDragModel Declaration
\*---------------------------------------------------------------------------*/
 
class blendedDragModel
:
    public BlendedInterfacialModel<dragModel>
{
public:
 
    // Constructors
 
        //- Inherit base class constructors
        using BlendedInterfacialModel<dragModel>::BlendedInterfacialModel;
 
 
    // Selectors
 
        inline static autoPtr<blendedDragModel> New
        (
            const UPtrList<const dictionary>& subDicts,
            const phaseInterface& interface,
            const dictionary& blendingDict
        )
        {
            return autoPtr<blendedDragModel>
            (
                new blendedDragModel(subDicts, interface, blendingDict)
            );
        }
 
 
    // Member Functions
 
        //- Return the drag coefficient K
        tmp<volScalarField> K() const;
 
        //- Return the drag coefficient Kf
        tmp<surfaceScalarField> Kf() const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //