[jf_vt]

Hi Foamers
this is quite a silly question but I am at loss:

If I run a simulation with a simple algorithm with:

startFrom startTime;

startTime 0;

stopAt endTime;

endTime 1000;

deltaT 1;

the log file state as expected that it will run for 1000 iterations ( no convergence criteria)

When I continue the simulation ( after remapping on a finer mesh)

startFrom startTime;

startTime 1000;

stopAt endTime;

endTime 2000;

deltaT 1;

The log file then report that it will run for 2000 iterations while 1000 will be expected.

what do i miss?
Thanks
JF

[aeroMatze]

sorry, my reply was nonsense

[alexeym]

@jf_vt

Since your message lacks exact OpenFOAM message, I suppose it is something like:

SIMPLE: no convergence criteria found. Calculations will run for 2000  steps.

And it is a result of not quite precise wording in simpleControl class constructor:

if (residualControl_.empty())
{
    Info<< algorithmName_ << ": no convergence criteria found. "
        << "Calculations will run for " << mesh_.time().endTime().value()
        << " steps." << nl << endl;
}
...

Since your endTime is 2000, message says that it will run for 2000 steps.

Maybe it is worth reporting bug (http://bugs.openfoam.org), since for SIMPLE mesh_.time().endTime().value() can be changed to mesh_.time().endTime().value() - mesh_.time().startTime().value().

Yet simpleFoam simulations without convergence criterion is something ridiculous.

[jf_vt]

Thanks
Sorry for the lack of accuracy in my message (As you can easily guess I am pretty new to the forum) but you get it right of course..

As for interrest running simple without convergence algorithm, I agree with you in general but at the moment I am investigating convergence speed while inserting remeshing and field mapping in the process ( this is research not sure where it leads) but in a simplified form:

I run a cas for 1000 step remesh it finer, map fields and run it for another 1000 step ... and so forth... and compare solution quality vs cputime if i run on the finer mesh all the time.

I dont need convergence test for that and this is why I stumbled on this and found it annoying in the context of the work described above.

I reported it as a (small) bug

Thanks for your reply
JF