DMDModel.H

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    Copyright (C) 2020-2021 OpenCFD Ltd.
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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
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    You should have received a copy of the GNU General Public License
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Namespace
    Foam::DMDModels
 
Description
    A namespace for various dynamic mode
    decomposition (DMD) model implementations.
 
Class
    Foam::DMDModel
 
Description
    Abstract base class for DMD models to handle DMD
    characteristics for the \c DMD function object.
 
SourceFiles
    DMDModel.C
    DMDModelNew.C
    DMDModelTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef DMDModel_H
#define DMDModel_H
 
#include "fvMesh.H"
#include "dictionary.H"
#include "HashSet.H"
#include "runTimeSelectionTables.H"
#include "writeFile.H"
#include "OFstream.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                            Class DMDModel Declaration
\*---------------------------------------------------------------------------*/
 
class DMDModel
:
    public functionObjects::writeFile
{
    typedef SquareMatrix<scalar> SMatrix;
    typedef RectangularMatrix<scalar> RMatrix;
 
 
protected:
 
    // Protected Data
 
        //- Reference to the mesh
        const fvMesh& mesh_;
 
        //- Name of operand function object
        const word name_;
 
 
    // Protected Member Functions
 
        // Evaluation
 
            //- Compute and write mode dynamics
            virtual bool dynamics() = 0;
 
            //- Compute and write modes
            virtual bool modes() = 0;
 
 
public:
 
    //- Runtime type information
    TypeName("DMDModel");
 
 
    // Declare runtime constructor selection table
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            DMDModel,
            dictionary,
            (
                const fvMesh& mesh,
                const word& name,
                const dictionary& dict
            ),
            (mesh, name, dict)
        );
 
 
    // Selectors
 
        //- Return a reference to the selected DMD model
        static autoPtr<DMDModel> New
        (
            const fvMesh& mesh,
            const word& name,
            const dictionary& dict
        );
 
 
    // Constructors
 
        //- Construct from components
        DMDModel
        (
            const fvMesh& mesh,
            const word& name,
            const dictionary& dict
        );
 
        //- No copy construct
        DMDModel(const DMDModel&) = delete;
 
        //- No copy assignment
        void operator=(const DMDModel&) = delete;
 
 
    //- Destructor
    virtual ~DMDModel() = default;
 
 
    // Member Functions
 
        // Evaluation
 
            //- Initialise model data members with a given snapshot
            virtual bool initialise(const RMatrix& snapshot) = 0;
 
            //- Update model data members with a given snapshot
            virtual bool update(const RMatrix& snapshot) = 0;
 
            //- Compute and write modes and
            //- mode dynamics of model data members
            virtual bool fit() = 0;
 
            //- Compute and write a reconstruction of flow field
            //- based on given modes and mode dynamics (currently no-op)
            virtual void reconstruct(const wordList modes)
            {
                NotImplemented;
            }
 
 
        // I-O
 
            //- Read model settings
            virtual bool read(const dictionary& dict) = 0;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //