Writing relative residual of each iteration in statistics file

ASPECT
#1

Hi all,

A beginner question here, I am wondering if there is any possibility to write non-linear relative residual of each iteration in statistics file, just trying to see how residual reduces after each iteration.

Thanks,
Ray

#2

Hi Ray,

Unfortunately, there is not currently an option to do that.

There is a parameter is available under subsection Postprocess that if set to true will run the postprocessors on every nonlinear iteration:
set Run postprocessors on nonlinear iterations = true

However, this only works if Time between graphical output = 0 and it does not sound like this is what you’re looking for.

Its possible to use grep to extract specific information out of the log.txt for plotting, which is what I typically do. Let me know if an example would be helpful!

Cheers,
John