leastSquaresFaGrad.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
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-------------------------------------------------------------------------------
    Copyright (C) 2016-2017 Wikki Ltd
    Copyright (C) 2023 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::fa::leastSquaresFaGrad
 
Description
    Second-order gradient scheme using least-squares.
 
Author
    Hrvoje Jasak, Wikki Ltd.
 
SourceFiles
    leastSquaresFaGrad.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef leastSquaresFaGrad_H
#define leastSquaresFaGrad_H
 
#include "faGradScheme.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace fa
{
 
/*---------------------------------------------------------------------------*\
                     Class leastSquaresFaGrad Declaration\*-------------------
\*---------------------------------------------------------------------------*/
 
template<class Type>
class leastSquaresFaGrad
:
    public fa::gradScheme<Type>
{
public:
 
    //- Runtime type information
    TypeName("leastSquares");
 
 
    // Generated Methods
 
        //- No copy construct
        leastSquaresFaGrad(const leastSquaresFaGrad&) = delete;
 
        //- No copy assignment
        void operator=(const leastSquaresFaGrad&) = delete;
 
 
    // Constructors
 
        //- Construct from mesh
        leastSquaresFaGrad(const faMesh& mesh)
        :
            gradScheme<Type>(mesh)
        {}
 
        //- Construct from Istream
        leastSquaresFaGrad(const faMesh& mesh, Istream&)
        :
            gradScheme<Type>(mesh)
        {}
 
 
    // Member Functions
 
        //- Return the gradient of the given field to the
        //- gradScheme::grad for optional caching
        virtual tmp
        <
            GeometricField
            <typename outerProduct<vector, Type>::type, faPatchField, areaMesh>
        > calcGrad
        (
            const GeometricField<Type, faPatchField, areaMesh>& vsf,
            const word& name
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fa
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "leastSquaresFaGrad.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //