openfoam/tutorials/heatTransfer/chtMultiRegionFoam/multiRegionHeater/system/bottomAir/fvSolution

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  dev                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{
    rho
    {
        solver          PCG;
        preconditioner  DIC;
        tolerance       1e-8;
        relTol          0.1;
    }

    rhoFinal
    {
        $rho;
        tolerance       1e-8;
        relTol          0;
    }

    p_rgh
    {
        solver           GAMG;
        tolerance        1e-8;
        relTol           0.01;

        smoother         GaussSeidel;

        cacheAgglomeration  true;
        nCellsInCoarsestLevel 10;
        agglomerator     faceAreaPair;
        mergeLevels      1;
    }

    p_rghFinal
    {
        $p_rgh;
        tolerance        1e-8;
        relTol           0;
    }

    "(U|h|k|epsilon|R)"
    {
        solver           PBiCG;
        preconditioner   DILU;
        tolerance        1e-08;
        relTol           0.1;
    }

    "(U|h|k|epsilon|R)Final"
    {
        $U;
        tolerance        1e-08;
        relTol           0;
    }
}

PISO
{
    momentumPredictor   off;
    nOuterCorrectors     1;
    nCorrectors     2;
    nNonOrthogonalCorrectors 1;
    pRefPoint       (-0.081 -0.0257 8.01);
    pRefValue       1e5;
}


PIMPLE
{
    momentumPredictor   on;
    nCorrectors         2;
    nNonOrthogonalCorrectors 0;
}


relaxationFactors
{
//    h               0.9;
//    U               0.9;
}

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