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-   -   unsteady problem (https://www.cfd-online.com/Forums/fluent/34180-unsteady-problem.html)

kethireddy July 13, 2004 06:05

unsteady problem
 
Hi i am doing unsteady calculations using VOF model.i have initial inlet profile defined by udf. All the other conditions are defined. How long i should continue calculating ..How to check out residual of each iteration step. it would be great if somone can explain this bye kethireddy

Ajay July 14, 2004 00:00

Re: unsteady problem
 
how long to run simulation :- Till your residuals obtain a constant amplitude.

How to check residuals :- Solve->Monitor->Residuals set the values as per your requirement and tick plot in the option to get the residual plot.

kethireddy July 14, 2004 05:52

Re: unsteady problem
 
hi thanks for your reply.Actually i am dealing with developing waves.My convergence criteria is satisfied with in first few iterations how ever it will take time to obtain fully-developed waves of the film.i think you understand me now. waiting for ur answer regards kethireddy

Ajay July 14, 2004 18:29

Re: unsteady problem
 
I think once you can start getting smilar pattern in your residual plot you can stop


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