CFD Online Discussion Forums

CFD Online Discussion Forums (
-   Siemens (
-   -   warning #057 (

a student May 16, 2006 11:29

warning #057
Hello everybody,

I have warning #057, i.e equation of state imbalance at xyz cell in 2-stroke engine combustion run. There are around 40 cells displaying this warning and I found them located near by exhaust port boundary (pr.) and very few near by inlet boundary.

Should I ignore this warning which is only absent in the middle portion of the run. And I have high HDIFF value also. Please advice.

Thanking you.

GU May 16, 2006 16:21

Re: warning #057
the equation of state is not converged in those cell, what actions can you take to help the solver converge?

a student May 16, 2006 17:18

Re: warning #057
Hello GU,

I know I can not help solver but I am curious to know why at those locations only.

John May 17, 2006 06:42

Re: warning #057
Take a look at the values of these imbalance. Normally there are very small and can be ignored with certainty.

a student May 18, 2006 01:44

Re: warning #057
Hello John,

Yes as you mentioned they are very small. Thank you much for your reply.

Do you know why my model crashes near the closing of ports due to -ve density.

Thanks alot.

All times are GMT -4. The time now is 23:35.