PBiCGStab.H

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    Copyright (C) 2016 OpenFOAM Foundation
    Copyright (C) 2019 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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    under the terms of the GNU General Public License as published by
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Class
    Foam::PBiCGStab
 
Description
    Preconditioned bi-conjugate gradient stabilized solver for asymmetric
    lduMatrices using a run-time selectable preconditioner.
 
    References:
    \verbatim
        Van der Vorst, H. A. (1992).
        Bi-CGSTAB: A fast and smoothly converging variant of Bi-CG
        for the solution of nonsymmetric linear systems.
        SIAM Journal on scientific and Statistical Computing, 13(2), 631-644.
 
        Barrett, R., Berry, M. W., Chan, T. F., Demmel, J., Donato, J.,
        Dongarra, J., Eijkhout, V., Pozo, R., Romine, C. & Van der Vorst, H.
        (1994).
        Templates for the solution of linear systems:
        building blocks for iterative methods
        (Vol. 43). Siam.
    \endverbatim
 
SourceFiles
    PBiCGStab.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef PBiCGStab_H
#define PBiCGStab_H
 
#include "lduMatrix.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class PBiCGStab Declaration
\*---------------------------------------------------------------------------*/
 
class PBiCGStab
:
    public lduMatrix::solver
{
    // Private Member Data
 
        //- Cached preconditioner
        mutable autoPtr<lduMatrix::preconditioner> preconPtr_;
 
 
    // Private Member Functions
 
        //- No copy construct
        PBiCGStab(const PBiCGStab&) = delete;
 
        //- No copy assignment
        void operator=(const PBiCGStab&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("PBiCGStab");
 
 
    // Constructors
 
        //- Construct from matrix components and solver data stream
        PBiCGStab
        (
            const word& fieldName,
            const lduMatrix& matrix,
            const FieldField<Field, scalar>& interfaceBouCoeffs,
            const FieldField<Field, scalar>& interfaceIntCoeffs,
            const lduInterfaceFieldPtrsList& interfaces,
            const dictionary& solverControls
        );
 
 
    //- Destructor
    virtual ~PBiCGStab() = default;
 
 
    // Member Functions
 
        //- Solve the matrix with this solver
        virtual solverPerformance scalarSolve
        (
            solveScalarField& psi,
            const solveScalarField& source,
            const direction cmpt = 0
        ) const;
 
        //- Solve the matrix with this solver
        virtual solverPerformance solve
        (
            scalarField& psi,
            const scalarField& source,
            const direction cmpt=0
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //