applications/utilities/postProcessing/miscellaneous/engineCompRatio/engineCompRatio.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright held by original author
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  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.
  15
  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.
  20
  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
  24
  25 Application
  26     engineCompRatioFoam
  27
  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.
  32
  33 \*---------------------------------------------------------------------------*/
  34
  35 #include "fvCFD.H"
  36 #include "engineTime.H"
  37 #include "engineMesh.H"
  38
  39 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  40
  41 int main(int argc, char *argv[])
  42 {
  43
  44 #   include "setRootCase.H"
  45 #   include "createEngineTime.H"
  46 #   include "createEngineMesh.H"
  47
  48 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  49
  50     scalar eps = 1.0e-10;
  51     scalar fullCycle = 360.0;
  52
  53     scalar ca0 = -180.0;
  54     scalar ca1 = 0.0;
  55
  56     while (runTime.theta() > ca0)
  57     {
  58         ca0 += fullCycle;
  59         ca1 += fullCycle;
  60     }
  61
  62     while (mag(runTime.theta() - ca0) > eps)
  63     {
  64         scalar t0 = runTime.userTimeToTime(ca0 - runTime.theta());
  65         runTime.setDeltaT(t0);
  66         runTime++;
  67         Info<< "CA = " << runTime.theta() << endl;
  68         mesh.move();
  69     }
  70
  71     scalar Vmax = sum(mesh.V().field());
  72
  73     while (mag(runTime.theta()-ca1) > eps)
  74     {
  75         scalar t1 = runTime.userTimeToTime(ca1-runTime.theta());
  76         runTime.setDeltaT(t1);
  77         runTime++;
  78         Info<< "CA = " << runTime.theta() << endl;
  79         mesh.move();
  80     }
  81
  82     scalar Vmin = sum(mesh.V().field());
  83
  84     Info<< "\nVmax = " << Vmax;
  85     Info<< ", Vmin = " << Vmin << endl;
  86     Info<< "Vmax/Vmin = " << Vmax/Vmin << endl;
  87     Info<< "\nEnd" << endl;
  88
  89     return 0;
  90 }
  91
  92
  93 // ************************************************************************* //