CentredFitScheme.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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::CentredFitScheme
 
Description
    Centred fit surface interpolation scheme which applies an explicit
    correction to linear.
 
\*---------------------------------------------------------------------------*/
 
#ifndef CentredFitScheme_H
#define CentredFitScheme_H
 
#include "CentredFitData.H"
#include "linear.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class CentredFitScheme Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type, class Polynomial, class Stencil>
class CentredFitScheme
:
    public linear<Type>
{
    // Private Data
 
        //- Factor the fit is allowed to deviate from linear.
        //  This limits the amount of high-order correction and increases
        //  stability on bad meshes
        const scalar linearLimitFactor_;
 
        //- Weights for central stencil
        const scalar centralWeight_;
 
 
    // Private Member Functions
 
        //- Disallow default bitwise copy construct
        CentredFitScheme(const CentredFitScheme&);
 
        //- Disallow default bitwise assignment
        void operator=(const CentredFitScheme&);
 
 
public:
 
    //- Runtime type information
    TypeName("CentredFitScheme");
 
 
    // Constructors
 
        //- Construct from mesh and Istream
        CentredFitScheme(const fvMesh& mesh, Istream& is)
        :
            linear<Type>(mesh),
            linearLimitFactor_(readScalar(is)),
            centralWeight_(1000)
        {}
 
 
        //- Construct from mesh, faceFlux and Istream
        CentredFitScheme
        (
            const fvMesh& mesh,
            const surfaceScalarField& faceFlux,
            Istream& is
        )
        :
            linear<Type>(mesh),
            linearLimitFactor_(readScalar(is)),
            centralWeight_(1000)
        {}
 
 
    // Member Functions
 
        //- Return true if this scheme uses an explicit correction
        virtual bool corrected() const
        {
            return true;
        }
 
        //- Return the explicit correction to the face-interpolate
        virtual tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
        correction
        (
            const GeometricField<Type, fvPatchField, volMesh>& vf
        ) const
        {
            const fvMesh& mesh = this->mesh();
 
            const extendedCentredCellToFaceStencil& stencil = Stencil::New
            (
                mesh
            );
 
            const CentredFitData<Polynomial>& cfd =
            CentredFitData<Polynomial>::New
            (
                mesh,
                stencil,
                linearLimitFactor_,
                centralWeight_
            );
 
            const List<scalarList>& f = cfd.coeffs();
 
            return stencil.weightedSum(vf, f);
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
// Add the patch constructor functions to the hash tables
 
#define makeCentredFitSurfaceInterpolationTypeScheme\
(                                                                             \
    SS,                                                                       \
    POLYNOMIAL,                                                               \
    STENCIL,                                                                  \
    TYPE                                                                      \
)                                                                             \
                                                                              \
typedef CentredFitScheme<TYPE, POLYNOMIAL, STENCIL>                           \
    CentredFitScheme##TYPE##POLYNOMIAL##STENCIL##_;                           \
defineTemplateTypeNameAndDebugWithName                                        \
    (CentredFitScheme##TYPE##POLYNOMIAL##STENCIL##_, #SS, 0);                 \
                                                                              \
surfaceInterpolationScheme<TYPE>::addMeshConstructorToTable                   \
<CentredFitScheme<TYPE, POLYNOMIAL, STENCIL> >                                \
    add##SS##STENCIL##TYPE##MeshConstructorToTable_;                          \
                                                                              \
surfaceInterpolationScheme<TYPE>::addMeshFluxConstructorToTable               \
<CentredFitScheme<TYPE, POLYNOMIAL, STENCIL> >                                \
    add##SS##STENCIL##TYPE##MeshFluxConstructorToTable_;
 
#define makeCentredFitSurfaceInterpolationScheme(SS, POLYNOMIAL, STENCIL)     \
                                                                              \
makeCentredFitSurfaceInterpolationTypeScheme(SS,POLYNOMIAL,STENCIL,scalar)    \
makeCentredFitSurfaceInterpolationTypeScheme(SS,POLYNOMIAL,STENCIL,vector)    \
makeCentredFitSurfaceInterpolationTypeScheme                                  \
(                                                                             \
    SS,                                                                       \
    POLYNOMIAL,                                                               \
    STENCIL,                                                                  \
    sphericalTensor                                                           \
)                                                                             \
makeCentredFitSurfaceInterpolationTypeScheme(SS,POLYNOMIAL,STENCIL,symmTensor)\
makeCentredFitSurfaceInterpolationTypeScheme(SS,POLYNOMIAL,STENCIL,tensor)
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //