STYLE: uniform 'Test-' prefix for all applications/test

- easier to clean, avoid confusion with 'real' applications, etc.
2025-11-28 03:28:01 +00:00 · 2010-11-23 16:26:04 +01:00
parent e5cf4f093e
commit 499d48cfdb
225 changed files with 215 additions and 272 deletions
--- a/applications/test/ODE/Test-ODE.C
+++ b/applications/test/ODE/Test-ODE.C
@ -0,0 +1,172 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Description
+
+\*---------------------------------------------------------------------------*/
+
+#include "argList.H"
+#include "IOmanip.H"
+#include "ODE.H"
+#include "ODESolver.H"
+#include "RK.H"
+
+using namespace Foam;
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+class testODE
+:
+    public ODE
+{
+
+public:
+
+    testODE()
+    {}
+
+    label nEqns() const
+    {
+        return 4;
+    }
+
+    void derivatives
+    (
+        const scalar x,
+        const scalarField& y,
+        scalarField& dydx
+    ) const
+    {
+        dydx[0] = -y[1];
+        dydx[1] = y[0] - (1.0/x)*y[1];
+        dydx[2] = y[1] - (2.0/x)*y[2];
+        dydx[3] = y[2] - (3.0/x)*y[3];
+    }
+
+    void jacobian
+    (
+        const scalar x,
+        const scalarField& y,
+        scalarField& dfdx,
+        scalarSquareMatrix& dfdy
+    ) const
+    {
+        dfdx[0] = 0.0;
+        dfdx[1] = (1.0/sqr(x))*y[1];
+        dfdx[2] = (2.0/sqr(x))*y[2];
+        dfdx[3] = (3.0/sqr(x))*y[3];
+
+        dfdy[0][0] = 0.0;
+        dfdy[0][1] = -1.0;
+        dfdy[0][2] = 0.0;
+        dfdy[0][3] = 0.0;
+
+        dfdy[1][0] = 1.0;
+        dfdy[1][1] = -1.0/x;
+        dfdy[1][2] = 0.0;
+        dfdy[1][3] = 0.0;
+
+        dfdy[2][0] = 0.0;
+        dfdy[2][1] = 1.0;
+        dfdy[2][2] = -2.0/x;
+        dfdy[2][3] = 0.0;
+
+        dfdy[3][0] = 0.0;
+        dfdy[3][1] = 0.0;
+        dfdy[3][2] = 1.0;
+        dfdy[3][3] = -3.0/x;
+    }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// Main program:
+
+int main(int argc, char *argv[])
+{
+    argList::validArgs.append("ODESolver");
+    argList args(argc, argv);
+
+    testODE ode;
+    autoPtr<ODESolver> odeSolver = ODESolver::New(args[1], ode);
+
+    scalar xStart = 1.0;
+    scalarField yStart(ode.nEqns());
+    yStart[0] = ::Foam::j0(xStart);
+    yStart[1] = ::Foam::j1(xStart);
+    yStart[2] = ::Foam::jn(2, xStart);
+    yStart[3] = ::Foam::jn(3, xStart);
+
+    scalarField dyStart(ode.nEqns());
+    ode.derivatives(xStart, yStart, dyStart);
+
+    Info<< setw(10) << "eps" << setw(12) << "hEst";
+    Info<< setw(13) << "hDid" << setw(14) << "hNext" << endl;
+    Info<< setprecision(6);
+
+    for (label i=0; i<15; i++)
+    {
+        scalar eps = ::Foam::exp(-scalar(i + 1));
+
+        scalar x = xStart;
+        scalarField y = yStart;
+        scalarField dydx = dyStart;
+
+        scalarField yScale(ode.nEqns(), 1.0);
+        scalar hEst = 0.6;
+        scalar hDid, hNext;
+
+        odeSolver->solve(ode, x, y, dydx, eps, yScale, hEst, hDid, hNext);
+
+        Info<< scientific << setw(13) << eps;
+        Info<< fixed << setw(11) << hEst;
+        Info<< setw(13) << hDid << setw(13) << hNext
+            << setw(13) << y[0] << setw(13) << y[1]
+            << setw(13) << y[2] << setw(13) << y[3]
+            << endl;
+    }
+
+    scalar x = xStart;
+    scalar xEnd = x + 1.0;
+    scalarField y = yStart;
+
+    scalarField yEnd(ode.nEqns());
+    yEnd[0] = ::Foam::j0(xEnd);
+    yEnd[1] = ::Foam::j1(xEnd);
+    yEnd[2] = ::Foam::jn(2, xEnd);
+    yEnd[3] = ::Foam::jn(3, xEnd);
+
+    scalar hEst = 0.5;
+
+    odeSolver->solve(ode, x, xEnd, y, 1e-4, hEst);
+
+    Info<< nl << "Analytical: y(2.0) = " << yEnd << endl;
+    Info      << "Numerical:  y(2.0) = " << y << ", hEst = " << hEst << endl;
+
+    Info<< "\nEnd\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //