engineCompRatio.C
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23 
24 Application
25  engineCompRatio
26 
27 Description
28  Calculate the geometric compression ratio.
29  Note that if you have valves and/or extra volumes it will not work,
30  since it calculates the volume at BDC and TCD.
31 
32 \*---------------------------------------------------------------------------*/
33 
34 #include "fvCFD.H"
35 #include "engineTime.H"
36 #include "engineMesh.H"
37 
38 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
39 
40 int main(int argc, char *argv[])
41 {
42  #include "setRootCase.H"
43  #include "createEngineTime.H"
44  #include "createEngineMesh.H"
45 
46  // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
47 
48  scalar eps = 1.0e-10;
49  scalar fullCycle = 360.0;
50 
51  scalar ca0 = -180.0;
52  scalar ca1 = 0.0;
53 
54  while (runTime.theta() > ca0)
55  {
56  ca0 += fullCycle;
57  ca1 += fullCycle;
58  }
59 
60  while (mag(runTime.theta() - ca0) > eps)
61  {
62  scalar t0 = runTime.userTimeToTime(ca0 - runTime.theta());
63  runTime.setDeltaT(t0);
64  runTime++;
65  Info<< "CA = " << runTime.theta() << endl;
66  mesh.move();
67  }
68 
69  scalar Vmax = sum(mesh.V().field());
70 
71  while (mag(runTime.theta()-ca1) > eps)
72  {
73  scalar t1 = runTime.userTimeToTime(ca1-runTime.theta());
74  runTime.setDeltaT(t1);
75  runTime++;
76  Info<< "CA = " << runTime.theta() << endl;
77  mesh.move();
78  }
79 
80  scalar Vmin = sum(mesh.V().field());
81 
82  Info<< "\nVmax = " << Vmax;
83  Info<< ", Vmin = " << Vmin << endl;
84  Info<< "Vmax/Vmin = " << Vmax/Vmin << endl;
85  Info<< "\nEnd\n" << endl;
86 
87  return 0;
88 }
89 
90 
91 // ************************************************************************* //
engineTime & runTime
Ostream & endl(Ostream &os)
Add newline and flush stream.
Definition: Ostream.H:256
dimensioned< Type > sum(const DimensionedField< Type, GeoMesh > &df)
dynamicFvMesh & mesh
messageStream Info
dimensioned< scalar > mag(const dimensioned< Type > &)