FreeFOAM The Cross-Platform CFD Toolkit
alphaCourantNo.H
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23 
24 Global
25  CourantNo
26 
27 Description
28  Calculates and outputs the mean and maximum Courant Numbers.
29 
30 \*---------------------------------------------------------------------------*/
31 
32 scalar maxAlphaCo
33 (
34  readScalar(runTime.controlDict().lookup("maxAlphaCo"))
35 );
36 
37 scalar alphaCoNum = 0.0;
38 scalar meanAlphaCoNum = 0.0;
39 
40 if (mesh.nInternalFaces())
41 {
42  surfaceScalarField alpha1f = fvc::interpolate(alpha1);
43  surfaceScalarField alpha2f = fvc::interpolate(alpha2);
44 
45  surfaceScalarField SfUfbyDelta = max
46  (
47  pos(alpha1f - 0.01)*pos(0.99 - alpha1f),
48  pos(alpha2f - 0.01)*pos(0.99 - alpha2f)
49  )*mesh.surfaceInterpolation::deltaCoeffs()*mag(phi);
50 
51  alphaCoNum = max(SfUfbyDelta/mesh.magSf())
52  .value()*runTime.deltaT().value();
53 
54  meanAlphaCoNum = (sum(SfUfbyDelta)/sum(mesh.magSf()))
55  .value()*runTime.deltaT().value();
56 }
57 
58 Info<< "Interface Courant Number mean: " << meanAlphaCoNum
59  << " max: " << alphaCoNum << endl;
60 
61 // ************************************************************************* //