OpenFOAM-5.x/applications/solvers/heatTransfer/chtMultiRegionFoam/chtMultiRegionSimpleFoam/fluid/readFluidMultiRegionSIMPLEControls.H

    const dictionary& simple = fluidRegions[i].solutionDict().subDict("SIMPLE");

    const int nNonOrthCorr =
        simple.lookupOrDefault<int>("nNonOrthogonalCorrectors", 0);

    const bool momentumPredictor =
        simple.lookupOrDefault("momentumPredictor", true);