CourantNo.H

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Global
    CourantNo

Description
    Calculates and outputs the maximum Courant Number.

\*---------------------------------------------------------------------------*/


scalar CoNum = 0.0;
scalar meanCoNum = 0.0;
scalar waveCoNum = 0.0;

if (mesh.nInternalFaces())
{
    scalarField sumPhi
    (
        fvc::surfaceSum(mag(phi))().primitiveField()
      / h.primitiveField()
    );

    CoNum = 0.5*gMax(sumPhi/mesh.V().field())*runTime.deltaTValue();

    meanCoNum =
        0.5*(gSum(sumPhi)/gSum(mesh.V().field()))*runTime.deltaTValue();

    // Gravity wave Courant number
    waveCoNum = 0.25*gMax
    (
        fvc::surfaceSum
        (
            fvc::interpolate(sqrt(h))*mesh.magSf()
        )().primitiveField()/mesh.V().field()
    )*sqrt(magg).value()*runTime.deltaTValue();
}

Info<< "Courant number mean: " << meanCoNum
    << " max: " << CoNum << endl;

Info<< "Gravity wave Courant number max: " << waveCoNum
    << endl;


// ************************************************************************* //