alphaEqnSubCycle.H

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#include "alphaControls.H"
 
if (nAlphaSubCycles > 1)
{
    dimensionedScalar totalDeltaT = runTime.deltaT();
    surfaceScalarField rhoPhiSum
    (
        IOobject
        (
            "rhoPhiSum",
            runTime.timeName(),
            mesh
        ),
        mesh,
        dimensionedScalar(rhoPhi.dimensions(), Zero)
    );
 
    for
    (
        subCycle<volScalarField> alphaSubCycle(alpha1, nAlphaSubCycles);
        !(++alphaSubCycle).end();
    )
    {
        #include "alphaEqn.H"
        rhoPhiSum += (runTime.deltaT()/totalDeltaT)*rhoPhi;
    }
 
    rhoPhi = rhoPhiSum;
}
else
{
    #include "alphaEqn.H"
}
 
rho == alpha1*rho1 + alpha2*rho2;