highAspectRatioFvGeometryScheme.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2020 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
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    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::highAspectRatioFvGeometryScheme
 
Description
    Geometry calculation scheme with automatic stabilisation for high-aspect
    ratio cells.
 
SourceFiles
    highAspectRatioFvGeometryScheme.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef highAspectRatioFvGeometryScheme_H
#define highAspectRatioFvGeometryScheme_H
 
#include "basicFvGeometryScheme.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class primitiveMesh;
class polyMesh;
 
/*---------------------------------------------------------------------------*\
               Class highAspectRatioFvGeometryScheme Declaration
\*---------------------------------------------------------------------------*/
 
class highAspectRatioFvGeometryScheme
:
    public basicFvGeometryScheme
{
protected:
 
        const scalar minAspect_;
 
        const scalar maxAspect_;
 
 
    // Protected Member Functions
 
        //- Calculate cell and face weight. Is 0 for cell < minAspect, 1 for
        //  cell > maxAspect
        void calcAspectRatioWeights
        (
            scalarField& cellWeight,
            scalarField& faceWeight
        ) const;
 
        //- Helper : calculate (weighted) average face and cell centres
        static void makeAverageCentres
        (
            const polyMesh& mesh,
            const pointField& points,
            const pointField& faceAreas,
            const scalarField& magFaceAreas,
            pointField& faceCentres,
            pointField& cellCentres
        );
 
 
private:
 
    // Private Member Functions
 
        //- No copy construct
        highAspectRatioFvGeometryScheme
        (
            const highAspectRatioFvGeometryScheme&
        ) = delete;
 
        //- No copy assignment
        void operator=(const highAspectRatioFvGeometryScheme&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("highAspectRatio");
 
 
    // Constructors
 
        //- Construct from mesh
        highAspectRatioFvGeometryScheme
        (
            const fvMesh& mesh,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~highAspectRatioFvGeometryScheme() = default;
 
 
    // Member Functions
 
        //- Do what is necessary if the mesh has moved
        virtual void movePoints();
 
        //- Calculate geometry quantities using mesh topology and provided
        //- points. If oldPoints provided only does local update. Returns
        //- true if anything changed, false otherwise
        virtual bool updateGeom
        (
            const pointField& points,
            const refPtr<pointField>& oldPoints,    // optional old points
            pointField& faceCentres,
            vectorField& faceAreas,
            pointField& cellCentres,
            scalarField& cellVolumes
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //