centralCourantNo.H

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Global
    centralCourantNo
 
Description
    Calculates the mean and maximum wave speed based Courant Numbers.
 
\*---------------------------------------------------------------------------*/
 
if (mesh.nInternalFaces())
{
    scalarField sumAmaxSf(fvc::surfaceSum(amaxSf)().primitiveField());
 
    if (LTS)
    {
        const volScalarField& rDeltaT = trDeltaT.cref();
        const scalarField fldCo
        (
            sumAmaxSf/mesh.V().field()/rDeltaT.primitiveField()
        );
 
        auto CoLimits = gMinMax(fldCo);
 
        minCoNum = 0.5*CoLimits.min();
        CoNum = 0.5*CoLimits.max();
        meanCoNum = 0.5*gAverage(fldCo);
 
        Info<< "Courant Numbers: "
            << "min = " << minCoNum << ", "
            << "average = " << meanCoNum << ", "
            << "max = " << CoNum
            << endl;
    }
    else
    {
        CoNum = 0.5*gMax(sumAmaxSf/mesh.V().field())*runTime.deltaTValue();
 
        meanCoNum =
            0.5*(gSum(sumAmaxSf)/gSum(mesh.V().field()))*runTime.deltaTValue();
 
        Info<< "Mean and max Courant Numbers = "
            << meanCoNum << " " << CoNum << endl;
    }
}
 
// ************************************************************************* //