1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | foam-extend: Open Source CFD
4 \\ / O peration | Version: 3.2
5 \\ / A nd | Web: http://www.foam-extend.org
6 \\/ M anipulation | For copyright notice see file Copyright
7 -------------------------------------------------------------------------------
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18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
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28 ILU preconditioning with no fill-in
31 Hrvoje Jasak, Wikki Ltd. All rights reserved
36 \*---------------------------------------------------------------------------*/
41 #include "lduMatrix.H"
43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
48 /*---------------------------------------------------------------------------*\
49 Class ILU0 Declaration
50 \*---------------------------------------------------------------------------*/
54 public lduPreconditioner
58 //- Preconditioned diagonal
59 scalarField preconDiag_;
62 // Private Member Functions
64 //- Disallow default bitwise copy construct
67 //- Disallow default bitwise assignment
68 void operator=(const ILU0&);
70 //- Precondition the diagonal
71 void calcPreconDiag();
76 //- Runtime type information
82 //- Construct from matrix and dictionary
85 const lduMatrix& matrix,
86 const FieldField<Field, scalar>& coupleBouCoeffs,
87 const FieldField<Field, scalar>& coupleIntCoeffs,
88 const lduInterfaceFieldPtrsList& interfaces,
89 const dictionary& dict
92 //- Construct from matrix as a smoother
95 const lduMatrix& matrix,
96 const FieldField<Field, scalar>& coupleBouCoeffs,
97 const FieldField<Field, scalar>& coupleIntCoeffs,
98 const lduInterfaceFieldPtrsList& interfaces
109 //- Execute preconditioning
110 virtual void precondition
113 const scalarField& rA,
114 const direction cmpt = 0
117 //- Execute preconditioning with matrix transpose
118 virtual void preconditionT
121 const scalarField& rT,
122 const direction cmpt = 0
127 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
129 } // End namespace Foam
131 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
135 // ************************************************************************* //