CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Error: ISAT reaction rate (http://www.cfd-online.com/Forums/fluent/95263-error-isat-reaction-rate.html)

Basy December 12, 2011 04:26

Error: ISAT reaction rate
 
Hi
I am trying to simulate combustion with Steady Laminar Flamelet model (Non-premixed model in fluent). I did it with some mechanisms like GRI3.0 with no problem. but for some other reaction mechanisms I face this problem:
I read the mechanism in CHEMKIN format into Fluent and when I want to develop the flamelet, I get this error:


Error: ISAT reaction rate: Temperature = -3325385810.5K
Error Object: ()

I can bypass this problem by changing the relative error tolerance in Integration control form e-10 to e-17 but the accuracy of result is lowered and it seems I am just getting some "Garbage in/Garbage out". does any one have an idea about the source of problem?

thank you in advance for sharing your thoughts.
behzad

rezareal April 22, 2013 05:59

Isat Error
 
Hi Behzad
if you obtain answer your question,please guide me
thanks:confused:

Basy April 22, 2013 06:17

Unfortunately I couldn't solve the problem... :(


All times are GMT -4. The time now is 15:06.