bool pressureImplicitPorosity(false);

// nUCorrectors used for pressureImplicitPorosity
int nUCorr = 0;
if (pZones.active())
{
    // nUCorrectors for pressureImplicitPorosity
    nUCorr = simple.dict().getOrDefault<int>("nUCorrectors", 0);

    if (nUCorr > 0)
    {
        pressureImplicitPorosity = true;
        Info<< "Using pressure implicit porosity" << endl;
    }
    else
    {
        Info<< "Using pressure explicit porosity" << endl;
    }
}