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 -------------------------------------------------------------------------------
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/>.
28 Diagonal preconditioning
31 Hrvoje Jasak, Wikki Ltd. All rights reserved.
33 \*----------------------------------------------------------------------------*/
35 #include "coupledDiagonalPrecon.H"
36 #include "addToRunTimeSelectionTable.H"
38 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
42 defineTypeNameAndDebug(coupledDiagonalPrecon, 0);
44 addToRunTimeSelectionTable
47 coupledDiagonalPrecon,
53 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
55 void Foam::coupledDiagonalPrecon::precondition
57 FieldField<Field, scalar>& x,
58 const FieldField<Field, scalar>& b,
62 // Diagonally precondition all matrices
63 forAll (matrix_, rowI)
65 scalarField& rowX = x[rowI];
66 const scalarField& rowB = b[rowI];
67 const scalarField& rowDiag = matrix_[rowI].diag();
71 rowX[i] = rowB[i]/rowDiag[i];
77 // ************************************************************************* //