How found flammability limits of a gas mixture with Cantera ?

[Julien Tréflèze]

Hi,

The question is in the title ; I wonder if Cantera could help to found lower and uper flammability limits (LFL and UFL).

I wrote a script about 1D-diffusion flame with CH4/air mixture and I plot the flame temperature = fct (air flow) for a constant fuel flow.

It appears that for a mini and maxi value of air flow, the combustion don't happen but I don't know if I can found LFL and UFL with theses conclusions.

Anybody have a suggestion? a clue?

In the graph,

 -mdot_o is in kg/s

 -forget the label 'GN' (its an oversight)

 -it will be better with more points but nevermind, it's just to see the trend

Regards

[Bryan W. Weber]

Julien,

Cantera can certainly do the steady 1-D calculation; the question is whether or not that satisfies your definition of LFL and UFL. My understanding is that these parameters are defined differently in many places, so the values you calculate by considering extinction of steady-1-D flames may not correlate will with experimental data.

Best,

Bryan