linearUpwind.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
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Class
    Foam::linearUpwind

Description
    linearUpwind interpolation scheme class derived from upwind and returns
    upwind weighting factors but also applies an explicit correction.

SourceFiles
    linearUpwind.C

\*---------------------------------------------------------------------------*/

#ifndef linearUpwind_H
#define linearUpwind_H

#include <finiteVolume/upwind.H>
#include <finiteVolume/gaussGrad.H>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
                           Class linearUpwind Declaration
\*---------------------------------------------------------------------------*/

template<class Type>
class linearUpwind
:
    public upwind<Type>
{
    // Private Data

        tmp<fv::gradScheme<Type> > gradScheme_;


    // Private Member Functions

        //- Disallow default bitwise copy construct
        linearUpwind(const linearUpwind&);

        //- Disallow default bitwise assignment
        void operator=(const linearUpwind&);


public:

    //- Runtime type information
    TypeName("linearUpwind");


    // Constructors

        //- Construct from faceFlux
        linearUpwind
        (
            const fvMesh& mesh,
            const surfaceScalarField& faceFlux
        )
        :
            upwind<Type>(mesh, faceFlux),
            gradScheme_
            (
                new fv::gaussGrad<Type>(mesh)
            )
        {}

        //- Construct from Istream.
        //  The name of the flux field is read from the Istream and looked-up
        //  from the mesh objectRegistry
        linearUpwind
        (
            const fvMesh& mesh,
            Istream& schemeData
        )
        :
            upwind<Type>(mesh, schemeData),
            gradScheme_
            (
                fv::gradScheme<Type>::New
                (
                    mesh,
                    schemeData
                )
            )
        {}

        //- Construct from faceFlux and Istream
        linearUpwind
        (
            const fvMesh& mesh,
            const surfaceScalarField& faceFlux,
            Istream& schemeData
        )
        :
            upwind<Type>(mesh, faceFlux, schemeData),
            gradScheme_
            (
                fv::gradScheme<Type>::New
                (
                    mesh,
                    schemeData
                )
            )
        {}


    // 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>&
        ) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

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