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garychem April 1, 2011 21:04

Problem with Mass Fractions
Hi all,
I am running a steady state simulation of a reactor with un- reacted species flowing through them. As per mass balances, the masses of the individual species at the outlet should match the masses at the inlet. However, even when the solution is converging, there is a huge difference between the masses at the inlet & outlet. Could someone please explain why this is happening & provide a solution to the problem?

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