CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   Flow rate @ Outlet is higher than @Inlet (

tanaji October 30, 2011 15:54

Flow rate @ Outlet is higher than @Inlet
Dear All,

I am doing Flare simulation and for that I am using Fluent EDC model.

when I am checking flow rate of fuel sepcies at Inlet is less than flow rate of that species at outlet. There is element mass balance error.

How should I overcome this problem.
Please suggest me

Thank you

Laci October 30, 2011 16:09

You have species or element mass inbalance. These are not the same.
Don't forget to take into account, that chemical reactions in a domain can be sink or source of species.

tanaji October 31, 2011 00:29

thank you for your reply.
1. i am talking about element mass imbalance.
2. my fuel is c3h6.. the flame is generated still the c3h6 @ outlet is more than inlet....
this is the first time i am facing such type of problems

please suggest

Laci November 2, 2011 07:11

Could you send more detail?
- the reaction is one step or detailed with further reactions?
- temperature?
- reaction model/turbulence model?

All times are GMT -4. The time now is 05:51.