localMin.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | www.openfoam.com
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-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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::localMin
 
Group
    grpFvSurfaceInterpolationSchemes
 
Description
    LocalMin-mean differencing scheme class.
 
    This scheme interpolates 1/field using a scheme specified at run-time
    and return the reciprocal of the interpolate.
 
SourceFiles
    localMin.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef localMin_H
#define localMin_H
 
#include "surfaceInterpolationScheme.H"
#include "volFields.H"
#include "surfaceFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class localMin Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class localMin
:
    public surfaceInterpolationScheme<Type>
{
    // Private Member Functions
 
        //- No copy assignment
        void operator=(const localMin&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("localMin");
 
 
    // Constructors
 
        //- Construct from mesh
        localMin(const fvMesh& mesh)
        :
            surfaceInterpolationScheme<Type>(mesh)
        {}
 
        //- Construct from Istream.
        //  The name of the flux field is read from the Istream and looked-up
        //  from the mesh objectRegistry
        localMin
        (
            const fvMesh& mesh,
            Istream& is
        )
        :
            surfaceInterpolationScheme<Type>(mesh)
        {}
 
        //- Construct from faceFlux and Istream
        localMin
        (
            const fvMesh& mesh,
            const surfaceScalarField& faceFlux,
            Istream& is
        )
        :
            surfaceInterpolationScheme<Type>(mesh)
        {}
 
 
    // Member Functions
 
        //- Return the interpolation weighting factors
        virtual tmp<surfaceScalarField> weights
        (
            const GeometricField<Type, fvPatchField, volMesh>&
        ) const
        {
            NotImplemented;
            return nullptr;
        }
 
        //- Return the face-interpolate of the given cell field
        virtual tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
        interpolate
        (
            const GeometricField<Type, fvPatchField, volMesh>& vf
        ) const
        {
            const fvMesh& mesh = vf.mesh();
 
            tmp<GeometricField<Type, fvsPatchField, surfaceMesh>> tvff
            (
                new GeometricField<Type, fvsPatchField, surfaceMesh>
                (
                    IOobject
                    (
                        "localMin::interpolate(" + vf.name() + ')',
                        mesh.time().timeName(),
                        mesh
                    ),
                    mesh,
                    vf.dimensions()
                )
            );
            GeometricField<Type, fvsPatchField, surfaceMesh>& vff = tvff.ref();
 
            const labelUList& own = mesh.owner();
            const labelUList& nei = mesh.neighbour();
 
            forAll(vff, facei)
            {
                vff[facei] = min(vf[own[facei]], vf[nei[facei]]);
            }
 
            typename GeometricField<Type, fvsPatchField, surfaceMesh>::
                Boundary& bff = vff.boundaryFieldRef();
 
            forAll(bff, patchi)
            {
                const fvPatchField<Type>& pf = vf.boundaryField()[patchi];
                Field<Type>& pff = bff[patchi];
 
                if (pf.coupled())
                {
                    tmp<Field<Type>> tpif(pf.patchInternalField());
                    const Field<Type>& pif = tpif();
 
                    tmp<Field<Type>> tpnf(pf.patchNeighbourField());
                    const Field<Type>& pnf = tpnf();
 
                    forAll(pff, i)
                    {
                        pff[i] = min(pif[i], pnf[i]);
                    }
                }
                else
                {
                    pff = pf;
                }
            }
 
            return tvff;
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //