GAMGPreconditioner.H
Go to the documentation of this file.
1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration | Website: https://openfoam.org
5  \\ / A nd | Copyright (C) 2011-2020 OpenFOAM Foundation
6  \\/ M anipulation |
7 -------------------------------------------------------------------------------
8 License
9  This file is part of OpenFOAM.
10 
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.
15 
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.
20 
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/>.
23 
24 Class
25  Foam::GAMGPreconditioner
26 
27 Description
28  Geometric agglomerated algebraic multigrid preconditioner.
29 
30 See also
31  GAMGSolver for more details.
32 
33 SourceFiles
34  GAMGPreconditioner.C
35 
36 \*---------------------------------------------------------------------------*/
37 
38 #ifndef GAMGPreconditioner_H
39 #define GAMGPreconditioner_H
40 
41 #include "GAMGSolver.H"
42 
43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
44 
45 namespace Foam
46 {
47 
48 /*---------------------------------------------------------------------------*\
49  Class GAMGPreconditioner Declaration
50 \*---------------------------------------------------------------------------*/
51 
53 :
54  public GAMGSolver,
56 {
57 protected:
58  // Protected data
59 
60  //- Number of V-cycles to perform
62 
63  //- Read the control parameters from the controlDict_
64  virtual void readControls();
65 
66 public:
67 
68  //- Runtime type information
69  TypeName("GAMG");
70 
71 
72  // Constructors
73 
74  //- Construct from matrix components and preconditioner solver controls
76  (
77  const lduMatrix::solver&,
78  const dictionary& solverControls
79  );
80 
81 
82  //- Destructor
83  virtual ~GAMGPreconditioner();
84 
85 
86  // Member Functions
87 
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;
95 };
96 
97 
98 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
99 
100 } // End namespace Foam
101 
102 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
103 
104 #endif
105 
106 // ************************************************************************* //
GAMGPreconditioner(const lduMatrix::solver &, const dictionary &solverControls)
Construct from matrix components and preconditioner solver controls.
A list of keyword definitions, which are a keyword followed by any number of values (e...
Definition: dictionary.H:156
Geometric agglomerated algebraic multigrid preconditioner.
uint8_t direction
Definition: direction.H:45
virtual void readControls()
Read the control parameters from the controlDict_.
TypeName("GAMG")
Runtime type information.
virtual ~GAMGPreconditioner()
Destructor.
virtual void precondition(scalarField &wA, const scalarField &rA, const direction cmpt=0) const
Return wA the preconditioned form of residual rA.
Abstract base-class for lduMatrix solvers.
Definition: lduMatrix.H:93
label nVcycles_
Number of V-cycles to perform.
Geometric agglomerated algebraic multigrid solver.
Definition: GAMGSolver.H:70
Abstract base-class for lduMatrix preconditioners.
Definition: lduMatrix.H:410
Namespace for OpenFOAM.