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[OpenFOAM-2.0.x.git] / src / OpenFOAM / matrices / lduMatrix / preconditioners / GAMGPreconditioner / GAMGPreconditioner.H
blobf79f7f1f1fcca4229f83a34ce5def3272ebfaeff
1 /*---------------------------------------------------------------------------*\
2   =========                 |
3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
4    \\    /   O peration     |
5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
6      \\/     M anipulation  |
7 -------------------------------------------------------------------------------
8 License
9     This file is part of OpenFOAM.
11     OpenFOAM is free software: you can redistribute it and/or modify it
12     under the terms of the GNU General Public License as published by
13     the Free Software Foundation, either version 3 of the License, or
14     (at your option) any later version.
16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
19     for more details.
21     You should have received a copy of the GNU General Public License
22     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
24 Class
25     Foam::GAMGPreconditioner
27 Description
28     Geometric agglomerated algebraic multigrid preconditioner.
30 See Also
31     GAMGSolver for more details.
33 SourceFiles
34     GAMGPreconditioner.C
36 \*---------------------------------------------------------------------------*/
38 #ifndef GAMGPreconditioner_H
39 #define GAMGPreconditioner_H
41 #include "GAMGSolver.H"
43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
45 namespace Foam
48 /*---------------------------------------------------------------------------*\
49                            Class GAMGPreconditioner Declaration
50 \*---------------------------------------------------------------------------*/
52 class GAMGPreconditioner
54     public GAMGSolver,
55     public lduMatrix::preconditioner
57 protected:
58     // Protected data
60         //- Number of V-cycles to perform
61         label nVcycles_;
63         //- Read the control parameters from the controlDict_
64         virtual void readControls();
66 public:
68     //- Runtime type information
69     TypeName("GAMG");
72     // Constructors
74         //- Construct from matrix components and preconditioner solver controls
75         GAMGPreconditioner
76         (
77             const lduMatrix::solver&,
78             const dictionary& solverControls
79         );
82     //- Destructor
83     virtual ~GAMGPreconditioner();
86     // Member Functions
88         //- Return wA the preconditioned form of residual rA
89         virtual void precondition
90         (
91             scalarField& wA,
92             const scalarField& rA,
93             const direction cmpt=0
94         ) const;
98 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
100 } // End namespace Foam
102 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
104 #endif
106 // ************************************************************************* //