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/>.
24 \*---------------------------------------------------------------------------*/
26 #include "GAMGSolver.H"
29 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
31 Foam::scalar Foam::GAMGSolver::scalingFactor
35 const scalarField& Ax,
39 scalar scalingFactorNum = 0.0;
40 scalar scalingFactorDenom = 0.0;
44 scalingFactorNum += b[i]*x[i];
45 scalingFactorDenom += Ax[i]*x[i];
47 // While the matrix-multiply done for the scaling it is
48 // possible to perform a point-Jacobi smoothing operation cheaply
49 x[i] += (b[i] - Ax[i])/D[i];
52 vector2D scalingVector(scalingFactorNum, scalingFactorDenom);
53 reduce(scalingVector, sumOp<vector2D>());
54 return scalingVector.x()/stabilise(scalingVector.y(), VSMALL);
58 Foam::scalar Foam::GAMGSolver::scalingFactor
63 const FieldField<Field, scalar>& coupleLevelBouCoeffs,
64 const lduInterfaceFieldPtrsList& interfaceLevel,
88 // ************************************************************************* //