foam-extend4.1-coherent-io/tutorials/compressible/realFluidPisoFoam/ras/backStep/system/fvSolution

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     |                                  |
|   \\  /    A nd           |                   
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{

p
{
        solver          GAMG;
        tolerance       1e-14;
        relTol          0.001;
        smoother        GaussSeidel;
	minIter		4;	
	//maxIter		100;
        cacheAgglomeration true;
	nPreSweeps	1;
	nPostSweeps	3;
	nFinestSweeps	3;
        nCellsInCoarsestLevel 20;
        agglomerator    faceAreaPair;
        mergeLevels     1;
}

    U
    {
        solver          smoothSolver;
        smoother        GaussSeidel;
        nSweeps         2;
        tolerance       1e-14;
        relTol          0.001;
    }

    rho
    {
        solver          PCG;
        preconditioner  DIC;
        tolerance       1e-10;
        relTol          0;
    }

    htot
    {
        solver          smoothSolver;
        smoother        GaussSeidel;
        nSweeps         2;
        tolerance       1e-14;
        relTol          0.001;
    }

    h
    {
        solver          smoothSolver;
        smoother        GaussSeidel;
        nSweeps         2;
        tolerance       1e-14;
        relTol          0.001;
    }

    k
    {
        solver          PBiCG;
        preconditioner  DILU;
        tolerance       1e-10;
        relTol          0;
    }
    epsilon
    {
        solver          PBiCG;
        preconditioner  DILU;
        tolerance       1e-10;
        relTol          0;
    }
}

PISO
{
    realFluid true;
    nNonOrthogonalCorrectors 0;
    nCorrectors     2;
    momentumPredictor yes;
}


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