initial commit for version 1.6.x patch release
[OpenFOAM-1.6.x.git] / applications / utilities / postProcessing / miscellaneous / engineCompRatio / engineCompRatio.C
blob65356b382b26678e2db9db3a7d3ce511ce61972f
1 /*---------------------------------------------------------------------------*\
2   =========                 |
3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
4    \\    /   O peration     |
5     \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
6      \\/     M anipulation  |
7 -------------------------------------------------------------------------------
8 License
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
19     for more details.
21     You should have received a copy of the GNU General Public License
22     along with OpenFOAM; if not, write to the Free Software Foundation,
23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 Application
26     engineCompRatioFoam
28 Description
29     Calculate the geometric compression ratio.
30     Note that if you have valves and/or extra volumes it will not work,
31     since it calculates the volume at BDC and TCD.
33 \*---------------------------------------------------------------------------*/
35 #include "fvCFD.H"
36 #include "engineTime.H"
37 #include "engineMesh.H"
39 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
41 int main(int argc, char *argv[])
43     #include "setRootCase.H"
44     #include "createEngineTime.H"
45     #include "createEngineMesh.H"
47     // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
49     scalar eps = 1.0e-10;
50     scalar fullCycle = 360.0;
52     scalar ca0 = -180.0;
53     scalar ca1 = 0.0;
55     while (runTime.theta() > ca0)
56     {
57         ca0 += fullCycle;
58         ca1 += fullCycle;
59     }
61     while (mag(runTime.theta() - ca0) > eps)
62     {
63         scalar t0 = runTime.userTimeToTime(ca0 - runTime.theta());
64         runTime.setDeltaT(t0);
65         runTime++;
66         Info<< "CA = " << runTime.theta() << endl;
67         mesh.move();
68     }
70     scalar Vmax = sum(mesh.V().field());
72     while (mag(runTime.theta()-ca1) > eps)
73     {
74         scalar t1 = runTime.userTimeToTime(ca1-runTime.theta());
75         runTime.setDeltaT(t1);
76         runTime++;
77         Info<< "CA = " << runTime.theta() << endl;
78         mesh.move();
79     }
81     scalar Vmin = sum(mesh.V().field());
83     Info<< "\nVmax = " << Vmax;
84     Info<< ", Vmin = " << Vmin << endl;
85     Info<< "Vmax/Vmin = " << Vmax/Vmin << endl;
86     Info<< "\nEnd" << endl;
88     return 0;
92 // ************************************************************************* //