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Species Mass Imbalance

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Old   June 30, 2011, 13:56
Default Species Mass Imbalance
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I 'm modelling a reactor in Fluent, the reactor consists of two channels in one channel a hot gas flows which provides the heat to the other side there is no reaction in there, I just put CO2 and nitrogen as the inert speices , but I have Speices mass imbalance between inlet and outlet? fro example some species that have zero mass fraction at inlet have some mass at the outlet !any suggestion?

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