foam-extend4.1-coherent-io/applications/solvers/surfaceTracking/include/meshMotionCourantNo.H

/*---------------------------------------------------------------------------*\
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Global
    CourantNo

Description
    Calculates and outputs the maximum Courant Number.

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

    scalar CoNum = max
    (
         mesh.surfaceInterpolation::deltaCoeffs()
        *mag(phiNet/fvc::interpolate(rho))/mesh.magSf()
    ).value()*runTime.deltaT().value();

    Info<< "\nMax Courant Number = " << CoNum << endl << endl;

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