[michael3000]

I set the following convergence criterion in the fvSolution dict:

SIMPLE
{
    residualControl
    {
        p               0.005; // default: 1e-4
        U               0.005; // default: 1e-4
        "(k|omega|epsilon)" 0.005; // default: 1e-4
    }
    nNonOrthogonalCorrectors 0;
    pRefCell        0;
    pRefValue       0;

}

simplefoam "acknowledges" the criterion in the log:

SIMPLE: convergence criteria
    field p	 tolerance 0.005
    field U	 tolerance 0.005
    field "(k|omega|epsilon)"	 tolerance 0.005

On t=46 convergence is reached, but it still does not stop but runs to the 50 timesteps as given in the controlDict

Time = 46

smoothSolver:  Solving for Ux, Initial residual = 0.00132339, Final residual = 0.000118212, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 0.00828419, Final residual = 0.000747561, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.00586836, Final residual = 0.000477364, No Iterations 2
GAMG:  Solving for p, Initial residual = 0.0446904, Final residual = 0.00266224, No Iterations 2
time step continuity errors : sum local = 5.56276e-05, global = -6.44437e-06, cumulative = -0.000195527
smoothSolver:  Solving for epsilon, Initial residual = 0.00314368, Final residual = 0.00022914, No Iterations 1
smoothSolver:  Solving for k, Initial residual = 0.00534749, Final residual = 0.000112692, No Iterations 2
ExecutionTime = 2.18 s  ClockTime = 4 s

controlDict:

startFrom       latestTime;

startTime       0;

stopAt          endTime;

endTime         50;

deltaT          1;

What do I need to change such that simplefoam actually stops upon convergence? (There are many questions about this already, but as far as I see, I do everything as recommended...)

[Hr_kules]

Hi, as far as i can tell, you didn't reach convergence. The criteria applies to the inital residual.

In your case for p = 0.005
The inital residual for p = 0.0446904
For U = 0.005
The initial u residuals:
Solving for Ux, Initial residual = 0.00132339
Solving for Uy, Initial residual = 0.00828419
Solving for Uz, Initial residual = 0.00586836

Just increase the endTime and see if the case converges

[michael3000]

Originally Posted by Hr_kules

Hi, as far as i can tell, you didn't reach convergence. The criteria applies to the inital residual.

That explains it! Thanks a lot :-)