[Hr_kules]

Hey everyone,


i would like to compare two cases with a similar problem, but with more complicated geometry respectively, to do that i want to have both cases converged. The problem is two fluids in a counterflow separated by a solid however everytime i start the calculation with a steady state chtMultiRegionFoam i get following:

Create time

Create fluid mesh for region fluidhot for time = 0

Create fluid mesh for region fluidcold for time = 0

Create solid mesh for region plate for time = 0


PIMPLE: Region fluidhot
PIMPLE: No convergence criteria found


PIMPLE: Region fluidcold
PIMPLE: No convergence criteria found


PIMPLE: Region plate
PIMPLE: No convergence criteria found


PIMPLE: Operating solver in steady-state mode with 1 outer corrector
PIMPLE: Operating solver in SIMPLE mode

the fvsolution of one of the fluids looks like the following (they have the same entries):

solvers
{
    "p_rgh.*"
    {
        solver           GAMG;
        smoother         symGaussSeidel;
        tolerance        1e-3;
        relTol           0.01;
    }

    "(U|h|k|epsilon).*"
    {
        solver           PBiCGStab;
        preconditioner   DILU;
        tolerance        1e-3;
        relTol           0.1;
    }
}

PIMPLE
{
    momentumPredictor   yes;
    outerCorrectorResidualControl
    {
        "(U|k|epsilon)"
        {
            relTol          0;
            tolerance       1e-6;
        }
    }     
}

relaxationFactors
{
    fields
    {
        rho             1.0;
        p_rgh           0.7;
    }
    equations
    {
        U               0.3;
        h               0.7;
        k               0.7;
        epsilon         0.7;
    }
}

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

i couldn't find information to solve this alone so any help is greatly appreciated!

[Hr_kules]

If someone comes across thge same rookie mistake i made the issue was resolved by typing:

PIMPLE
{
    residualControl
    {
        "(U|p_rgh).*" 1e-3;
    }
    convergenceCriterion   1e-3;
    nNonOrthogonalCorrectors 1;  
}

Hope this helps someone i the future.