1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
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 the
13 Free Software Foundation; either version 2 of the License, or (at your
14 option) any later version.
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
21 You should have received a copy of the GNU General Public License
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23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 \*---------------------------------------------------------------------------*/
27 #include <ODE/ODESolver.H>
29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 defineTypeNameAndDebug(Foam::ODESolver, 0);
34 defineRunTimeSelectionTable(ODESolver, ODE);
38 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
40 Foam::ODESolver::ODESolver(const ODE& ode)
48 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
50 void Foam::ODESolver::solve
60 const label MAXSTP = 10000;
65 for (label nStep=0; nStep<MAXSTP; nStep++)
67 ode.derivatives(x, y, dydx_);
69 for (label i=0; i<n_; i++)
71 yScale_[i] = mag(y[i]) + mag(dydx_[i]*h) + SMALL;
74 if ((x + h - xEnd)*(x + h - xStart) > 0.0)
80 solve(ode, x, y, dydx_, eps, yScale_, h, hDid, hNext);
82 if ((x - xEnd)*(xEnd - xStart) >= 0.0)
94 "(const ODE& ode, const scalar xStart, const scalar xEnd,"
95 "scalarField& yStart, const scalar eps, scalar& hEst) const"
96 ) << "Too many integration steps"
100 // ************************ vim: set sw=4 sts=4 et: ************************ //