MRFZone.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2018 OpenFOAM Foundation
    Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::MRFZone
 
Description
    MRF zone definition based on cell zone and parameters
    obtained from a control dictionary constructed from the given stream.
 
    The rotation of the MRF region is defined by an origin and axis of
    rotation and an angular speed.
 
SourceFiles
    MRFZone.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef MRFZone_H
#define MRFZone_H
 
#include "dictionary.H"
#include "wordList.H"
#include "labelList.H"
#include "dimensionedScalar.H"
#include "dimensionedVector.H"
#include "volFieldsFwd.H"
#include "surfaceFields.H"
#include "fvMatricesFwd.H"
#include "mapPolyMesh.H"
#include "Function1.H"
#include "autoPtr.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of classes
class fvMesh;
 
/*---------------------------------------------------------------------------*\
                           Class MRFZone Declaration
\*---------------------------------------------------------------------------*/
 
class MRFZone
{
    // Private data
 
        //- Reference to the mesh database
        const fvMesh& mesh_;
 
        //- Name of the MRF region
        const word name_;
 
        //- Coefficients dictionary
        dictionary coeffs_;
 
        //- MRF region active flag
        bool active_;
 
        //- Name of cell zone
        word cellZoneName_;
 
        //- Cell zone ID
        label cellZoneID_;
 
        //- Non-rotating patches
        wordRes excludedPatchNames_;
 
        //- Indices of non-rotating patches
        labelList excludedPatchLabels_;
 
        //- Internal faces that are part of MRF
        labelList internalFaces_;
 
        //- Outside faces (per patch) that move with the MRF
        labelListList includedFaces_;
 
        //- Excluded faces (per patch) that do not move with the MRF
        labelListList excludedFaces_;
 
        //- Origin of the axis
        vector origin_;
 
        //- Axis vector
        vector axis_;
 
        //- Angular velocity (rad/sec)
        autoPtr<Function1<scalar>> omega_;
 
 
    // Private Member Functions
 
        //- Divide faces in frame according to patch
        void setMRFFaces();
 
        //- Make the given absolute mass/vol flux relative within the MRF region
        template<class RhoFieldType>
        void makeRelativeRhoFlux
        (
            const RhoFieldType& rho,
            surfaceScalarField& phi
        ) const;
 
        //- Make the given absolute mass/vol flux relative within the MRF region
        template<class RhoFieldType>
        void makeRelativeRhoFlux
        (
            const RhoFieldType& rho,
            FieldField<fvsPatchField, scalar>& phi
        ) const;
 
        //- Make the given absolute mass/vol flux relative within the MRF region
        template<class RhoFieldType>
        void makeRelativeRhoFlux
        (
            const RhoFieldType& rho,
            Field<scalar>& phi,
            const label patchi
        ) const;
 
        //- Make the given relative mass/vol flux absolute within the MRF region
        template<class RhoFieldType>
        void makeAbsoluteRhoFlux
        (
            const RhoFieldType& rho,
            surfaceScalarField& phi
        ) const;
 
        //- No copy construct
        MRFZone(const MRFZone&) = delete;
 
        //- No copy assignment
        void operator=(const MRFZone&) = delete;
 
 
public:
 
    // Declare name of the class and its debug switch
    ClassName("MRFZone");
 
 
    // Constructors
 
        //- Construct from fvMesh
        MRFZone
        (
            const word& name,
            const fvMesh& mesh,
            const dictionary& dict,
            const word& cellZoneName = word::null
        );
 
        //- Return clone
        autoPtr<MRFZone> clone() const
        {
            NotImplemented;
            return nullptr;
        }
 
 
    // Member Functions
 
        //- Return const access to the MRF region name
        inline const word& name() const;
 
        //- Return const access to the MRF active flag
        inline bool active() const;
 
        //- Return const access to the MRF origin
        inline const vector& origin() const;
 
        //- Return const access to the MRF axis
        inline const vector& axis() const;
 
        //- Return the current Omega vector
        vector Omega() const;
 
        //- Update the mesh corresponding to given map
        void updateMesh(const mapPolyMesh& mpm)
        {
            // Only updates face addressing
            setMRFFaces();
        }
 
        //- Add the Coriolis force contribution to the acceleration field
        void addCoriolis
        (
            const volVectorField& U,
            volVectorField& ddtU
        ) const;
 
        //- Add the Coriolis force contribution to the momentum equation
        //  Adds to the lhs of the equation; optionally add to rhs
        void addCoriolis
        (
            fvVectorMatrix& UEqn,
            const bool rhs = false
        ) const;
 
        //- Add the Coriolis force contribution to the momentum equation
        //  Adds to the lhs of the equation; optionally add to rhs
        void addCoriolis
        (
            const volScalarField& rho,
            fvVectorMatrix& UEqn,
            const bool rhs = false
        ) const;
 
        //- Make the given absolute velocity relative within the MRF region
        void makeRelative(volVectorField& U) const;
 
        //- Make the given absolute flux relative within the MRF region
        void makeRelative(surfaceScalarField& phi) const;
 
        //- Make the given absolute boundary flux relative
        //  within the MRF region
        void makeRelative(FieldField<fvsPatchField, scalar>& phi) const;
 
        //- Make the given absolute patch flux relative
        //  within the MRF region
        void makeRelative(Field<scalar>& phi, const label patchi) const;
 
        //- Make the given absolute mass-flux relative within the MRF region
        void makeRelative
        (
            const surfaceScalarField& rho,
            surfaceScalarField& phi
        ) const;
 
        //- Make the given relative velocity absolute within the MRF region
        void makeAbsolute(volVectorField& U) const;
 
        //- Make the given relative flux absolute within the MRF region
        void makeAbsolute(surfaceScalarField& phi) const;
 
        //- Make the given relative mass-flux absolute within the MRF region
        void makeAbsolute
        (
            const surfaceScalarField& rho,
            surfaceScalarField& phi
        ) const;
 
        //- Correct the boundary velocity for the rotation of the MRF region
        void correctBoundaryVelocity(volVectorField& U) const;
 
        //- Zero the MRF region of the given field
        template<class Type>
        void zero(GeometricField<Type, fvsPatchField, surfaceMesh>& phi) const;
 
        //- Update MRFZone faces if the mesh topology changes
        void update();
 
 
    // I-O
 
        //- Write
        void writeData(Ostream& os) const;
 
        //- Read MRF dictionary
        bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "MRFZoneTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "MRFZoneI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //