smoothSolver.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2013 OpenFOAM Foundation
    Copyright (C) 2019 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::smoothSolver

Group
    grpLduMatrixSolvers

Description
    Iterative solver for symmetric and asymmetric matrices which uses a
    run-time selected smoother e.g. GaussSeidel to converge the solution to
    the required tolerance.

    To improve efficiency, the residual is evaluated after every nSweeps
    smoothing iterations.

SourceFiles
    smoothSolver.C

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

#ifndef Foam_smoothSolver_H
#define Foam_smoothSolver_H

#include "lduMatrix.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                           Class smoothSolver Declaration
\*---------------------------------------------------------------------------*/

class smoothSolver
:
    public lduMatrix::solver
{
protected:

    // Protected Data

        //- Number of sweeps before the evaluation of residual
        label nSweeps_;

        //- Read the control parameters from the controlDict_
        virtual void readControls();


public:

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


    // Constructors

        //- Construct from matrix components and solver controls
        smoothSolver
        (
            const word& fieldName,
            const lduMatrix& matrix,
            const FieldField<Field, scalar>& interfaceBouCoeffs,
            const FieldField<Field, scalar>& interfaceIntCoeffs,
            const lduInterfaceFieldPtrsList& interfaces,
            const dictionary& solverControls
        );


    //- Destructor
    virtual ~smoothSolver() = default;


    // Member Functions

        //- Solve the matrix with this solver
        virtual solverPerformance solve
        (
            scalarField& psi,
            const scalarField& source,
            const direction cmpt=0
        ) const;
};


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

} // End namespace Foam

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

#endif

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