CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   FLUENT (https://www.cfd-online.com/Forums/fluent/)
-   -   convergence (https://www.cfd-online.com/Forums/fluent/40518-convergence.html)

novice April 10, 2006 16:21

convergence
 
is it necessary to converge the solution at each time step?

Joe April 10, 2006 16:34

Re: convergence
 
If you want to resolve any transient behavior, then yes.

novice April 10, 2006 18:49

Re: convergence
 
what do you meant by resolve any transient behavior?

Joe April 10, 2006 19:26

Re: convergence
 
Transient behavior as in time-varying behavior, such as what you would find in a bubble column or moderate Re flow past an obstacle in a channel etc. We know that these flow configurations exhibit time-varying behavior physically. For instance the periodic vortex shedding in the latter case etc. So if you want to accurately capture such phenomena, you stand a better chance if you converge in every time step. If all you are interested in is steady state solution, then you can safely march faster in time.


All times are GMT -4. The time now is 02:03.