Transient case cannot convergence?
 

An transient problem cannot convergence.

What should I do next?

How to modify the model?

Re: Transient case cannot convergence?
 

Hey Kevin,

I was under the impression that transient keeps changing with time : correct me if I am wrong. Is there any special case you are running? Can you explain the problem.

Regards

Re: Transient case cannot convergence?
 

Hello,CHELSA ,

There are two large scale box passing each other in this case. Box is 1m*0.4m*0.3m, is filleted .The velocity of the two box is respectively 50m/s and -50m/s. It is versy simple ,but convergence is difficulty to arrive.

I changed the delta time ,but it still divergenced.I 'am confused for the case,what should i do next?

Re: Transient case cannot convergence?
 

Is it cell activation and deactivation?

Re: Transient case cannot convergence?
 

Hey Kevin,

Looks like it is a case of large tolerences. How much did you give? Try something like 0.001 or closer and also are your momentum equations converging?

Re: Transient case cannot convergence?
 

To Som yes,just as you said.

To Chelsa

Thanks ,I will try again!