mixture fraction of coal oxy-combustion (fuel: coal +CO2; oxidizer O2+CO2)
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co-axial flow arrangement: Coal + CO2 and aO2+bCO2
DPM, species transport, 2-step reaction mechanismin the postprocessing, I used the local equivalent ratio to indicate the flame location, which coincides with the flame.
the issue is that it doesn't consider the diluted gas's impact: CO2 could be involved in the reaction.
I used bilger definition, as shown below. the issue here is I don't know the volatile:CO2 ratio at the location I interested.
Non-premixed model seems be able to do this job. but I use species transport model, not providing this option.
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