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Old   November 29, 2001, 03:12
Default problem in mass flow boundary
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hello every one

1.I got a problem. I have fixed the mass flow rate at outlet by mass flow boundary and it is 53kg/sec.after running the program i found that it is 63.85 kg/sec.Why i am getting like this.My problem involves turbulent flow with particle transport and combustion.I am using K-e model with eddy break up model

2.does anyboby has the idea about massfraction1,massfraction2,massfraction3 and massfraction4 in CFX4.4

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Old   November 30, 2001, 01:04
Default Re: problem in mass flow boundary
arjun s y
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it depends on which model you are using say for eddy break up model solves for

combustionscalar1 is mixture fraction (F) and mass fraction1 is mass fraction of fuel.

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Old   December 3, 2001, 23:47
Default Re: problem in mass flow boundary
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Dear arjun

thank you for your reply.Actually I am using eddy break up model for combustion.I did not understand your answer clearly.would you please explain it ?Actually I want 53 kg/sec flue gas from the outlet boundary and I define that as mass flow boundary but I am getting 63kg/sec.thankyou again for your reply

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