twoDPointCorrector.H

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    Copyright (C) 2011-2015 OpenFOAM Foundation
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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.
 
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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::twoDPointCorrector
 
Description
    Class applies a two-dimensional correction to mesh motion point field.
 
    The correction guarantees that the mesh does not get twisted during motion
    and thus introduce a third dimension into a 2-D problem.
 
    The operation is performed by looping through all edges approximately
    normal to the plane and enforcing their orthogonality onto the plane by
    adjusting points on their ends.
 
SourceFiles
    twoDPointCorrector.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef twoDPointCorrector_H
#define twoDPointCorrector_H
 
#include "MeshObject.H"
#include "pointField.H"
#include "labelList.H"
#include "vector.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward class declarations
class polyMesh;
 
/*---------------------------------------------------------------------------*\
                     Class twoDPointCorrector Declaration
\*---------------------------------------------------------------------------*/
 
class twoDPointCorrector
:
    public MeshObject<polyMesh, UpdateableMeshObject, twoDPointCorrector>
{
    // Private data
 
        //- Is 2D correction required, i.e. is the mesh
        bool required_;
 
        //- 2-D plane unit normal
        mutable vector* planeNormalPtr_;
 
        //- Indices of edges normal to plane
        mutable labelList* normalEdgeIndicesPtr_;
 
        //- Flag to indicate a wedge geometry
        mutable bool isWedge_;
 
        //- Wedge axis (if wedge geometry)
        mutable vector wedgeAxis_;
 
        //- Wedge angle (if wedge geometry)
        mutable scalar wedgeAngle_;
 
 
    // Private Member Functions
 
        //- No copy construct
        twoDPointCorrector(const twoDPointCorrector&) = delete;
 
        //- No copy assignment
        void operator=(const twoDPointCorrector&) = delete;
 
 
        //- Calculate addressing
        void calcAddressing() const;
 
        //- Clear addressing
        void clearAddressing() const;
 
        //- Snap a point to the wedge patch(es)
        void snapToWedge(const vector& n, const point& A, point& p) const;
 
 
    // Static data members
 
        //- Edge orthogonality tolerance
        static const scalar edgeOrthogonalityTol;
 
 
public:
 
    // Declare name of the class and its debug switch
    ClassName("twoDPointCorrector");
 
 
    // Constructors
 
        //- Construct from components
        twoDPointCorrector(const polyMesh& mesh);
 
 
    //- Destructor
    ~twoDPointCorrector();
 
 
    // Member Functions
 
        //- Is 2D correction required, i.e. is the mesh a wedge or slab
        bool required() const
        {
            return required_;
        }
 
        //- Return plane normal
        const vector& planeNormal() const;
 
        //- Return indices of normal edges.
        const labelList& normalEdgeIndices() const;
 
        //- Return direction normal to plane
        direction normalDir() const;
 
        //- Correct motion points
        void correctPoints(pointField& p) const;
 
        //- Correct motion displacements
        void correctDisplacement(const pointField& p, vectorField& disp) const;
 
        //- Update topology
        void updateMesh(const mapPolyMesh&);
 
        //- Correct weighting factors for moving mesh.
        bool movePoints();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //