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-   -   how to set BC for compressible flow target mass flow rate (http://www.cfd-online.com/Forums/fluent/99453-how-set-bc-compressible-flow-target-mass-flow-rate.html)

foolboy007 April 3, 2012 16:12

how to set BC for compressible flow target mass flow rate
 
I have a T shaped geometry. One inlet and two outlets.
Total flow rate is 500 slpm. The flow ratio for the outlets is 9:1.
I am using compressible flow to solve the flow.

inlet: mass flow intlet
outlet: pressure outlet with target mass flow rate turned on.

However,after 100k iterations, I still cannot get expected mass flow rate through the two outlets.

Could anybody give me some suggestions about this?

Zigainer April 4, 2012 03:24

I also had problems with pressure outlet and traget mass flow rate (see http://www.cfd-online.com/Forums/flu...flow-rate.html)

and here is how fluent does it:
https://www.sharcnet.ca/Software/Flu...ug/node244.htm

In your case I would just use pressure outlet without traget mass flow rate and adjust the gauge pressure until you get your mass flow rate


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