I am injecting Helium in a 10m X 2m Rectangular Closed domain. The mass flow rate is 0.0017Kg/s.This is unsteady problem.
After few seconds I am calculating the total mass injected by Time*mass flow rate. This should be equall to mass averaged species mass fraction which is reported in Volume integrals. But i am getting 10 times higher values by Fluent. Can anyone suggest what the problem is.
Thanks in advance.
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