I have a set up of wing at angles below and above the stall angle. How can I compute the average lift/drag on the wing over a period of time, I have set the unsteady solver, 'data sampling for time statistics', and set the force monitors to write to a file, but I can't figure out how to output the time average of a force.

Thanks, Kai

Is it correct that a steady state solution gives me a time-average of an unsteady state? This is the impression I got from reading around a bit.

If I cannot get convergence, I can decrease the under-relaxation... anything else I can do?