Filling of gas in a Cylinder (Time dependent mass fractions) -- CFD Online Discussion Forums

December 20, 2019, 09:53	Filling of gas in a Cylinder (Time dependent mass fractions)	#1
abidkhan New Member Abid Khan Join Date: Dec 2017 Posts: 23 Rep Power: 8	Hello, A cylinder currently having air at atmospheric pressure is to be filled with nitrogen so that at t=0 MF.air=1, MF.nitrogen=0 and at t=5min it is vice versa. How can I model that? (MF=mass fraction) I can create a mixture with variable composition but how to change mass fractions with time in a transient analysis? Best Regards, Abid

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