FDICSmoother.H

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    Copyright (C) 2011-2012 OpenFOAM Foundation
    Copyright (C) 2019 OpenCFD Ltd.
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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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    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::FDICSmoother
 
Description
    Simplified diagonal-based incomplete Cholesky smoother for symmetric
    matrices.
 
    To improve efficiency, the residual is evaluated after every nSweeps
    sweeps.
 
SourceFiles
    FDICSmoother.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef FDICSmoother_H
#define FDICSmoother_H
 
#include "lduMatrix.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class FDICSmoother Declaration
\*---------------------------------------------------------------------------*/
 
class FDICSmoother
:
    public lduMatrix::smoother
{
    // Private data
 
        //- The reciprocal preconditioned diagonal
        solveScalarField rD_;
        solveScalarField rDuUpper_;
        solveScalarField rDlUpper_;
 
 
public:
 
    //- Runtime type information
    TypeName("FDIC");
 
 
    // Constructors
 
        //- Construct from matrix components
        FDICSmoother
        (
            const word& fieldName,
            const lduMatrix& matrix,
            const FieldField<Field, scalar>& interfaceBouCoeffs,
            const FieldField<Field, scalar>& interfaceIntCoeffs,
            const lduInterfaceFieldPtrsList& interfaces
        );
 
 
    // Member Functions
 
        //- Smooth the solution for a given number of sweeps
        void smooth
        (
            solveScalarField& psi,
            const scalarField& source,
            const direction cmpt,
            const label nSweeps
        ) const;
 
        //- Smooth the solution for a given number of sweeps
        virtual void scalarSmooth
        (
            solveScalarField& psi,
            const solveScalarField& source,
            const direction cmpt,
            const label nSweeps
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //