Forward compatibility: flex
[foam-extend-3.2.git] / src / lduSolvers / lduSmoother / iluSmoother / iluSmoother.C
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1 /*---------------------------------------------------------------------------*\
2   =========                 |
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 -------------------------------------------------------------------------------
8 License
9     This file is part of foam-extend.
11     foam-extend is free software: you can redistribute it and/or modify it
12     under the terms of the GNU General Public License as published by the
13     Free Software Foundation, either version 3 of the License, or (at your
14     option) any later version.
16     foam-extend is distributed in the hope that it will be useful, but
17     WITHOUT ANY WARRANTY; without even the implied warranty of
18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19     General Public License for more details.
21     You should have received a copy of the GNU General Public License
22     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
24 Class
25     iluSmoother
27 Description
28     Symmetric Gauss-Seidel smoother
30 Author
31     Hrvoje Jasak, Wikki Ltd.  All rights reserved.
33 \*---------------------------------------------------------------------------*/
35 #include "iluSmoother.H"
36 #include "addToRunTimeSelectionTable.H"
38 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
40 namespace Foam
42     defineTypeNameAndDebug(iluSmoother, 0);
44     lduSmoother::addsymMatrixConstructorToTable<iluSmoother>
45         addiluSmootherSymMatrixConstructorToTable_;
47     lduSmoother::addasymMatrixConstructorToTable<iluSmoother>
48         addiluSmootherAsymMatrixConstructorToTable_;
52 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
54 Foam::iluSmoother::iluSmoother
56     const lduMatrix& matrix,
57     const FieldField<Field, scalar>& coupleBouCoeffs,
58     const FieldField<Field, scalar>& coupleIntCoeffs,
59     const lduInterfaceFieldPtrsList& interfaces
62     lduSmoother
63     (
64         matrix,
65         coupleBouCoeffs,
66         coupleIntCoeffs,
67         interfaces
68     ),
69     precon_
70     (
71         matrix,
72         coupleBouCoeffs,
73         coupleIntCoeffs,
74         interfaces
75     ),
76     xCorr_(matrix.lduAddr().size()),
77     residual_(matrix.lduAddr().size())
81 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
83 void Foam::iluSmoother::smooth
85     scalarField& x,
86     const scalarField& b,
87     const direction cmpt,
88     const label nSweeps
89 ) const
91     for (label sweep = 0; sweep < nSweeps; sweep++)
92     {
93         // Calculate residual
94         matrix_.Amul
95         (
96             residual_,
97             x,
98             coupleBouCoeffs_,
99             interfaces_,
100             cmpt
101         );
103         // residual = b - Ax
104         forAll (b, i)
105         {
106             residual_[i] = b[i] - residual_[i];
107         }
109         precon_.precondition(xCorr_, residual_, cmpt);
111         // Add correction to x
112         x += xCorr_;
113     }
118 // ************************************************************************* //