|
[Sponsors] |
June 30, 2014, 21:10 |
Split Mass Flow Rate in ANSYS CFX
|
#1 |
Senior Member
Ashkan Javadzadegan
Join Date: Sep 2010
Posts: 255
Rep Power: 17 |
Dear all,
I am modelling blood flow in a bifurcated artery. I know the total inlet mass flow rate and fraction of the flow leaving each outlet. For example inlet mass flow is 0.9 gr/s and 20% of this flow passes through the outlet 1 and 80% leaves through the outlet 2. For boundary condition, I used mass flow rate at inlet and both outlets; however, while solving the following notice is given for both outlets: A wall has been placed at portion(s) of an OUTLET | | boundary condition (at 100% of the faces, 100% of the area) | | to prevent fluid from flowing into the domain. | | The boundary condition name is: Outlet 1. I know in this case I should use opening boundary condition, but the only known parameter at the outlets is mass flow rate fraction. Please can anyone let me know how I should specify the boundary condition for my problem. Thanks AshtonJ |
|
July 2, 2014, 23:23 |
|
#2 |
Senior Member
Erik
Join Date: Feb 2011
Location: Earth (Land portion)
Posts: 1,188
Rep Power: 23 |
First off, I would try a pressure boundary condition at your inlet. If you are gettng recirculation, extend your outlets further downstream.
|
|
July 9, 2014, 04:08 |
|
#3 |
Senior Member
Marcin
Join Date: May 2014
Location: Poland, Swiebodzin
Posts: 313
Rep Power: 13 |
You can try opening with reference pressure - if you know pressure on the BCs
|
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Mass flow rate of phase in post | mat_cfd | CFX | 0 | September 3, 2013 08:55 |
Periodic channel flow with time dependent mass flow rate | QBeast | FLUENT | 3 | May 10, 2013 14:14 |
how to set BC for compressible flow target mass flow rate | foolboy007 | FLUENT | 1 | April 4, 2012 04:24 |
mass flow rate (CFX post) | sanchezz | CFX | 2 | January 14, 2010 07:54 |
mass flow rate on the Iso-clip surface & interior | Sunil Gupta | FLUENT | 0 | April 22, 2008 10:29 |