FreeFOAM The Cross-Platform CFD Toolkit
compressibleCourantNo.C
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25 
26 #include "compressibleCourantNo.H"
27 #include <finiteVolume/fvc.H>
28 
29 Foam::scalar Foam::compressibleCourantNo
30 (
31  const fvMesh& mesh,
32  const Time& runTime,
33  const volScalarField& rho,
34  const surfaceScalarField& phi
35 )
36 {
37  scalar CoNum = 0.0;
38  scalar meanCoNum = 0.0;
39 
40  //- Can have fluid domains with 0 cells so do not test.
41  //if (mesh.nInternalFaces())
42  {
43  surfaceScalarField SfUfbyDelta =
44  mesh.surfaceInterpolation::deltaCoeffs()
45  * mag(phi)
46  / fvc::interpolate(rho);
47 
48  CoNum = max(SfUfbyDelta/mesh.magSf())
49  .value()*runTime.deltaT().value();
50 
51  meanCoNum = (sum(SfUfbyDelta)/sum(mesh.magSf()))
52  .value()*runTime.deltaT().value();
53  }
54 
55  Info<< "Region: " << mesh.name() << " Courant Number mean: " << meanCoNum
56  << " max: " << CoNum << endl;
57 
58  return CoNum;
59 }
60 
61 
62 // ************************ vim: set sw=4 sts=4 et: ************************ //