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

Isat Error
 

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

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