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-   -   Time average of a wall force (http://www.cfd-online.com/Forums/fluent/49672-time-average-wall-force.html)

Kai Wohlfahrt October 31, 2008 13:03

Time average of a wall force
 
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

Kai Wohlfahrt November 18, 2008 05:59

Re: Time average of a wall force
 
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?


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