alphaCourantNo.H

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    Copyright (C) 2020 OpenCFD Ltd.
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    This file is part of OpenFOAM.
 
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Global
    alphaCourantNo
 
Description
    Calculates and outputs the mean and maximum Courant Numbers.
 
\*---------------------------------------------------------------------------*/
 
scalar maxAlphaCo
(
    runTime.controlDict().get<scalar>("maxAlphaCo")
);
 
scalar maxAlphaDdt
(
    runTime.controlDict().getOrDefault("maxAlphaDdt", GREAT)
);
 
scalar maxDi
(
    runTime.controlDict().getOrDefault<scalar>("maxDi", GREAT)
);
 
scalar alphaCoNum = 0.0;
scalar meanAlphaCoNum = 0.0;
scalar ddtAlphaNum = 0.0;
scalar DiNum = 0.0;
 
if (mesh.nInternalFaces())
{
    scalarField sumPhi
    (
        fluid.nearInterface()().internalField()
       *fvc::surfaceSum(mag(phi))().internalField()
    );
 
    alphaCoNum = 0.5*gMax(sumPhi/mesh.V().field())*runTime.deltaTValue();
 
    meanAlphaCoNum =
        0.5*(gSum(sumPhi)/gSum(mesh.V().field()))*runTime.deltaTValue();
 
    ddtAlphaNum = fluid.ddtAlphaMax().value()*runTime.deltaTValue();
 
    DiNum = fluid.maxDiffNo();
}
 
Info<< "Interface Courant Number mean: " << meanAlphaCoNum
    << " max: " << alphaCoNum << endl;
 
Info<< "Maximum ddtAlpha : " << ddtAlphaNum << endl;
 
Info<< "Maximum DiffNum : " << DiNum << endl;
 
 
// ************************************************************************* //