Mean mixture fraction of mixed fuel and oxidizer -- CFD Online Discussion Forums

October 15, 2018, 22:12	Mean mixture fraction of mixed fuel and oxidizer	#1
GustavoL New Member Join Date: Oct 2018 Posts: 1 Rep Power: 0	Hello everyone, I am a student trying to learn about PDF and I'm quite confused regarding the proper choice of mean mixture fraction at inlet for partially premixed combustion. I know the mass flow rate of my model, which is 1.704 e-4 kg/s for a stoichiometric mixture of C2H2 and O2. Fluent guide says 0 is usually chosen for oxidizer and 1 for fuel flows. But how could I estimate it when I have a mix of both? Also is there a way to set a mean mixture fraction for the interior of my domain? Thanks in advance!

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