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-   -   autoignition and combustion modelling (http://www.cfd-online.com/Forums/fluent/118405-autoignition-combustion-modelling.html)

parvaz747 May 27, 2013 07:39

autoignition and combustion modelling
 
Hi
I want to model auto-ignition of a gaseous hydrogen jet issue in a hot air co-flow.
which model is better? Composition PDF Transport model or non-premixed combustion?
If i use the PDF model in fluent, the auto-ignition model should be active too ?

sanjeetlimbu April 24, 2015 20:18

Dear sir

I am trying to do same autoignition for mixture heptane/N2/O2/AR: 0.562/58/30/10 mole fraction ratio

But unable to do it by any method i tried its not igniting in chemical equilibrium mode, flat temp

I tried use the flamelet - created steady solution by the unsteady is not happening due to error regarding the largest mixture fraction ...
Can u suggest to which model to refer in species


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