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-   -   A problem about partly premixed combustion (http://www.cfd-online.com/Forums/fluent/39155-problem-about-partly-premixed-combustion.html)

Z.P.YAO January 7, 2006 03:44

A problem about partly premixed combustion
 
This is a partly premixed combustion model.When I iterate, the fluent shows liks this: Updating solution at time level N... done. iter continuity x-velocity y-velocity k epsilon fmean fvar premixc time/iter

reversed flow in 49 faces on pressure-outlet 4.

Error: divergence detected in AMG solver: x-momentum Error Object: ()

Interrupting... Done.

I want to know what the problem is.Thank you very much!

Q January 7, 2006 10:35

Re: A problem about partly premixed combustion
 
somewhere some variable is divided by 0. U should avoid this my decresing the residual.


Z.P.YAO January 8, 2006 01:58

Re: A problem about partly premixed combustion
 
thank you for your answer.which variable is wrong or divided by 0?could you say it clearly? I can't find it. thank you very much!

Q January 8, 2006 07:19

Re: A problem about partly premixed combustion
 
I can give some ideas first note at which iteration u are getting such a problem then time u iteration just beofre that iterations where u get this problem and then plot the contours of all the solved variables and see where the soleution is reaching negative or 0.

Q


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