CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   stopping CFX solution run at best results (http://www.cfd-online.com/Forums/cfx/107662-stopping-cfx-solution-run-best-results.html)

MGabr October 3, 2012 10:08

stopping CFX solution run at best results
 
My question is, how can I stop CFX solution run at best results although it stopped at a result due to max. number of loops reached.

Best regards
M.Gabr

eng_norouzi October 3, 2012 10:24

the best result is when your residual curves are like a flat line.
this means that your solution is converged properly.

MGabr October 3, 2012 11:22

i mean that if RMS curves are like sin wave and solution stopped at it's peak due to reaching max. number of loops . could i select at which accumulated time step should it stop after run finished ?????

thanks

evcelica October 3, 2012 15:51

I don't know why you would want to do this, If your residuals are oscillating there is probably a transient part of the fluid flow, (vortex shedding) In this case the iteration with lower residuals is no more correct than the one with higher residuals. If you still want to do this though....you can write results files every so often, this is done in CFX-PRE under "output controls"

ghorrocks October 4, 2012 07:40

This question looks like an FAQ to me: http://www.cfd-online.com/Wiki/Ansys...gence_criteria


All times are GMT -4. The time now is 23:05.