[EmadTandis]

Hello everyone
I want to stop simpleFoam solver when solution is converged. As we know this solver is steady state solver. How can I determine converge condition?

[alberto]

You can set the convergence criteria per each variables in fvSolution, inside the residualControl sub-dictionary:

SIMPLE
{
    nNonOrthogonalCorrectors 2;
    pRefCell        0;
    pRefValue       0;

    residualControl
    {
        p               1e-5;
        U               1e-5;
        nuTilda       1e-5;
    }
}

Best,

[EmadTandis]

Thanks for your attention. The test case is cavity at Re=10 on 70*70 mesh. I want solution process stops when for example residuals less than 1e-3. But it does not stop. when I set end time =20000 the solution will continue to 20000s and will not stop. Why?

[alberto]

What version of OpenFOAM are you using? It should work in 2.0 and newer.

[EmadTandis]

It is version 1.7.1. Do you mean I should update it?

[alberto]

The syntax was different in 1.7.x. You can use

convergenceCriterion 1.0e-3;

in fvSolution/SIMPLE subdictionary. The new syntax works only in OpenFOAM 2.0.x.

[EmadTandis]

I used this:
SIMPLE
{
nNonOrthogonalCorrectors 2;
pRefCell 0;
pRefValue 0;
convergenceCriterion 1.0e-1;
}
But it makes no difference!

[alberto]

I cannot reproduce your problem. It should work.

[EmadTandis]

Thanks very much for your time.