MULES.C

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#include "MULES.H"

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

void Foam::MULES::limitSum(UPtrList<scalarField>& phiPsiCorrs)
{
    forAll(phiPsiCorrs[0], facei)
    {
        scalar sumPos = 0;
        scalar sumNeg = 0;

        for (int phasei=0; phasei<phiPsiCorrs.size(); phasei++)
        {
            if (phiPsiCorrs[phasei][facei] > 0)
            {
                sumPos += phiPsiCorrs[phasei][facei];
            }
            else
            {
                sumNeg += phiPsiCorrs[phasei][facei];
            }
        }

        const scalar sum = sumPos + sumNeg;

        if (sum > 0 && sumPos > vSmall)
        {
            const scalar lambda = -sumNeg/sumPos;

            forAll (phiPsiCorrs, phasei)
            {
                if (phiPsiCorrs[phasei][facei] > 0)
                {
                    phiPsiCorrs[phasei][facei] *= lambda;
                }
            }
        }
        else if (sum < 0 && sumNeg < -vSmall)
        {
            const scalar lambda = -sumPos/sumNeg;

            forAll (phiPsiCorrs, phasei)
            {
                if (phiPsiCorrs[phasei][facei] < 0)
                {
                    phiPsiCorrs[phasei][facei] *= lambda;
                }
            }
        }
    }
}


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