[vortex69]

Hi,

could some one please explain what is the difference between 'aitern' and 'citern'. In old posts I found this definition :

aitern' returns the Absolute Iteration Number (i.e. the number of iterations since it was first started) whereas 'citern' returns the Current Iteration Number (the number of iterations in the current run, reset to zero with each restart).

Even though I can not understand that. That would be nice if sb explains it with an example.

I would be thankful

[Gert-Jan]

run 001 - current iteration 1-100 & absolute iteration 1-100
run 002 - current iteration 1-100 & absolute iteration 101-200
run 003 - current iteration 1-100 & absolute iteration 201-300
run 004 - current iteration 1-1305 & absolute iteration 301-1605
run 005- etc.......

So, the current iteration starts counting from 1 each time whereas the absolute iteration continues counting. But only if you restart from the previous run, or use the previous run as an interpolation on a def with new settings or new mesh.

If you restart, then you should let the solver manager continue with the history from the previous run. This is the default setting but can be overruled by the user. If so, then the absolute iteration starts again at 1, like the current iteration.