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-   -   premixed turbulent combustion (http://www.cfd-online.com/Forums/fluent/30469-premixed-turbulent-combustion.html)

Tom November 5, 2002 10:30

premixed turbulent combustion
 
Does anyone have any experince of using the premixed turbulent combustion model in Fluent 5? I am trying to model the combustion of methane and air, however, the mixture burns as soon as it enters the domain. To slow down the progress variable (c) I have been reducing the critical rate of strain to increase the effect of flame stretch. This method has the desired effect, however, the solution becomes unstable and fails. Any advise!!!!!


Jin-Wook LEE November 9, 2002 21:51

Re: premixed turbulent combustion
 
I think that modeling of premixed turbulent combustion is still challenging. So, I still use Eddy-Break-Up model for several cases, sometimes by calibrating model constants.

Sincerely, Jinwook


Tom November 10, 2002 06:40

Re: premixed turbulent combustion
 
I totally agree with you. I have been using the finte rate / eddy dissipation model with some degree of success, however, I wanted to try a different approach to see what would happen.

Regards Tom


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