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-   -   Finite-Rate/Eddy-Dissipation problem (https://www.cfd-online.com/Forums/fluent/137413-finite-rate-eddy-dissipation-problem.html)

a_cucen June 16, 2014 07:23

Finite-Rate/Eddy-Dissipation problem
 
I' m trying to simulate combustion with Finite-Rate/Eddy-Dissipation model. I have 7 reactions and I want to choose only eddy dissipation at one of the reactions. How can I do that?

Regards

a_cucen June 18, 2014 02:24

Problem solved

Tleja April 9, 2015 11:20

I am setting up a very simple case.

My reaction is shown as below:

CH4 + 2O2 ----k----> CO2 + 2H2O

Pre-Ex 2.119e11
Ea 2.027e5 unit j/mol

First I chose Finite-Rate/Eddy-Dissipation as my combustion model, there is no combustion at all even after I initialized my case with 2000K!

Later I only use Eddy Dissipation model, then the combustion comes.

Actually,I need to include the effect of Arhenius law and turbulent into my reaction model.

Do you know why I can't use the first model?
How should i do?

Regard
Tleja

a_cucen April 9, 2015 11:54

Hi. maybe your arrhenius values are wrong. where did you get these values?


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