regularisationPDE.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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-------------------------------------------------------------------------------
    Copyright (C) 2021 PCOpt/NTUA
    Copyright (C) 2021 FOSS GP
-------------------------------------------------------------------------------
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::regularisationPDE
 
Description
    Base class for selecting the regulatisation PDE
 
 
SourceFiles
    regularisationPDE.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef regularisationPDE_H
#define regularisationPDE_H
 
#include "fvMesh.H"
#include "topOZones.H"
#include "fvMatrices.H"
#include "regularisationRadius.H"
#include "runTimeSelectionTables.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                      Class regularisationPDE Declaration
\*---------------------------------------------------------------------------*/
 
class regularisationPDE
{
 
private:
 
    // Private Member Functions
 
        //- No copy construct
        regularisationPDE(const regularisationPDE&) = delete;
 
        //- No copy assignment
        void operator=(const regularisationPDE&) = delete;
 
 
protected:
 
    // Protected data
 
        const fvMesh& mesh_;
 
        const dictionary dict_;
 
        //- Cell zones related to topology optimisation
        const topOZones& zones_;
 
        //- Whether to apply a fixedValue BC or zeroGradient one to alphaTilda,
        //- when regularisation is performed
        bool growFromWalls_;
 
 
    // Protected Member Functions
 
        //- Set fixed bTilda values
        void setValues
        (
            fvScalarMatrix& bTildaEqn,
            const bool isTopoField,
            const scalar minSetValue = Zero
        );
 
        //- Gather the cells with constant values from all constrained zones
        void setValues
        (
            const fvMesh& mesh,
            DynamicList<label>& cells,
            DynamicList<scalar>& values,
            bool isTopoField,
            const scalar minSetValue = Zero
        );
 
        //- Compute smoothing radius, if not directly given
        scalar computeRadius();
 
 
public:
 
    //- Runtime type information
    TypeName("regularisationPDE");
 
 
    // Declare run-time constructor selection table
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            regularisationPDE,
            dictionary,
            (
                const fvMesh& mesh,
                const dictionary& dict,
                const topOZones& zones
            ),
            (mesh, dict, zones)
        );
 
 
    // Constructors
 
        //- Construct from components
        regularisationPDE
        (
            const fvMesh& mesh,
            const dictionary& dict,
            const topOZones& zones
        );
 
 
    // Selectors
 
        //- Construct and return the selected regularisationPDE
        static autoPtr<regularisationPDE> New
        (
            const fvMesh& mesh,
            const dictionary& dict,
            const topOZones& zones
        );
 
 
    //- Destructor
    virtual ~regularisationPDE() = default;
 
 
    // Member Functions
 
        //- Regularise field (or sensitivities)
        virtual void regularise
        (
            const volScalarField& aTilda,
            const scalarField& source,
            scalarField& result,
            const bool isTopoField,
            const regularisationRadius& radius,
            const scalar minSetValue = Zero,
            const bool fixATildaValues = true
        ) = 0;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //