CFD Online Logo CFD Online URL
Home > Forums > CFX

Corrected (Referred) Mass Flow Rate Boundary Condition

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 14, 2012, 07:10
Default Corrected (Referred) Mass Flow Rate Boundary Condition
New Member
Join Date: Aug 2012
Location: Michigan
Posts: 1
Rep Power: 0
ermuir is on a distinguished road
I am using CFX to calculate fan stage performance and pressure loading on the fan blades for a damaged commercial turbofan using a steady-state CFD simulation. Currently, I have the total pressure ratio and corrected mass flow combination that form the fan operating line for a series of operating conditions. To avoid modeling the entire bypass duct, etc., I am specifying an average static pressure condition at the bypass duct boundary and "manually" iterating on static pressure until the solution achieves an operating point that coincides (within 1% or so) with the fan operating line. This procedure can be somewhat tedious, especially for the case of a damaged fan in which the speed lines are not known a priori and the entire wheel must be modeled (as opposed to a single passage with periodic boundary conditions).

Is anyone aware of a procedure/method within CFX to specify the corrected (referred) mass flow rate at the bypass duct outlet boundary condition? I am trying to achieve a particular point on the operating line.


ermuir is offline   Reply With Quote

Old   November 20, 2012, 18:11
Senior Member
Join Date: Mar 2009
Location: Brazil
Posts: 250
Rep Power: 12
brunoc is on a distinguished road
Check this out: Compressor simulation issue
brunoc is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wind turbine simulation Saturn CFX 34 October 16, 2014 05:27
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
How to change from mass flow to volume flow rate stanley FLUENT 1 February 2, 2007 07:44
Mass flow boundary condition Síle FLUENT 0 June 12, 2003 07:30
Constant mass flow rate / choking outlet bounardy condition Min Zhu Main CFD Forum 1 September 29, 1998 15:33

All times are GMT -4. The time now is 06:07.