[osmanveysel]

Hello,

I would like to set a residual control for continuityGlobal as a convergence criteria. There are options to set a residual control for velocity, pressure, turbulence properties etc., however I could not find an appropriate setting for continuity. If there is any idea would be great.

Thanks.

[alundilong]

Setting criteria for velocity and pressure is equivalent to continuity as solving velocity and pressure is the same as solving the continuity.

Originally Posted by osmanveysel

Hello,

I would like to set a residual control for continuityGlobal as a convergence criteria. There are options to set a residual control for velocity, pressure, turbulence properties etc., however I could not find an appropriate setting for continuity. If there is any idea would be great.

Thanks.

[osmanveysel]

Thanks for your answer. But when I set my residualControl to 1e-5 for p, U, k and omega, solution stops when they decrease under 1e-5. However globalContinuity may stay above 1e-4, 1e-3. So I am looking for something like in Fluent, it is possible to set a residualControl for continuity seperately. How can I do same kind of thing in OpenFOAM?

Originally Posted by alundilong

Setting criteria for velocity and pressure is equivalent to continuity as solving velocity and pressure is the same as solving the continuity.

[LongGe]

Hello Osman

Wouldn't a combination of runTimeControl and continuityError in functionObject accomplish what you want to do? This writing style will work with OpenFOAM-v2212.


functions
{
continuityError1
{
type continuityError;
libs (fieldFunctionObjects);
phi phi;
}


runTimeControl1
{
type runTimeControl;
libs (utilityFunctionObjects);
conditions
{
condition1
{
type minMax;
functionObject continuityError1;
fields (cumulative);
value 1e-02;
mode minimum;
}
}
satisfiedAction end;
}
}

[osmanveysel]

I just changed cumulative to local, it worked and it gave what I need. I guess I will add other criterias like U, p, turbulence etc. here to have a compact convergence criterion.
Thank you.

Originally Posted by LongGe

Hello Osman

Wouldn't a combination of runTimeControl and continuityError in functionObject accomplish what you want to do? This writing style will work with OpenFOAM-v2212.


functions
{
continuityError1
{
type continuityError;
libs (fieldFunctionObjects);
phi phi;
}


runTimeControl1
{
type runTimeControl;
libs (utilityFunctionObjects);
conditions
{
condition1
{
type minMax;
functionObject continuityError1;
fields (cumulative);
value 1e-02;
mode minimum;
}
}
satisfiedAction end;
}
}