LUST.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011 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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    for more details.
 
    You should have received a copy of the GNU General Public License
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Class
    Foam::LUST
 
Description
    LUST: Linear-upwind stabilised transport.
 
    Interpolation scheme class derived from linearUpwind which returns blended
    linear/linear-upwind weighting factors and also applies a explicit
    gradient-based correction obtained from the linearUpwind scheme.  The
    blending-factor is set to 0.75 linear which optimises the balance between
    accuracy and stability on a range of LES cases with a range of mesh quality.
 
SourceFiles
    LUST.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef LUST_H
#define LUST_H
 
#include "linearUpwind.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class LUST Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class LUST
:
    public linearUpwind<Type>
{
    // Private Member Functions
 
        //- Disallow default bitwise copy construct
        LUST(const LUST&);
 
        //- Disallow default bitwise assignment
        void operator=(const LUST&);
 
 
public:
 
    //- Runtime type information
    TypeName("LUST");
 
 
    // Constructors
 
        //- Construct from mesh and Istream
        LUST
        (
            const fvMesh& mesh,
            Istream& schemeData
        )
        :
            linearUpwind<Type>(mesh, schemeData)
        {}
 
        //- Construct from mesh, faceFlux and Istream
        LUST
        (
            const fvMesh& mesh,
            const surfaceScalarField& faceFlux,
            Istream& schemeData
        )
        :
            linearUpwind<Type>(mesh, faceFlux, schemeData)
        {}
 
 
    // Member Functions
 
        //- Return the interpolation weighting factors
        virtual tmp<surfaceScalarField> weights
        (
            const GeometricField<Type, fvPatchField, volMesh>&
        ) const
        {
            return
                0.75*this->mesh().surfaceInterpolation::weights()
              + 0.25*linearUpwind<Type>::weights();
        }
 
        //- 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
        {
            return 0.25*linearUpwind<Type>::correction(vf);
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //