CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Compressor simulation issue

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

Like Tree2Likes

Reply
 
LinkBack Thread Tools Display Modes
Old   November 6, 2013, 15:53
Default
  #21
New Member
 
Join Date: Jan 2013
Posts: 3
Rep Power: 4
cfdeng is on a distinguished road
Hello,
I am running steady-state simulation for a fan blade in CFX-Pre with exit corrected mass flow boundary condition which is defined as a CEL expression at outlet.
I need to create the fan map. To do this, I change the exit corrected mass flow. but I dont understand why by using this boundary condition my calculations converge even when the stall condition is passed!
This is not the case for constant back pressure boundary condition,i.e. the calculations do not converge when the blade is in stall or passes the stall condition. And this is the behavior I expect for stall condition.Can anyone help me please understand what happens with exit corrected mass flow boundary condition that the calculation gets converge even when the blade is in stall ??
cfdeng is offline   Reply With Quote

Reply

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
convergence issue with multiphaseInterFoam sachinlb OpenFOAM Running, Solving & CFD 2 October 12, 2012 11:45
Pressure boundary condition issue Vijay FLUENT 0 April 6, 2012 13:35
Meshing related issue in Flow EFD appu FloEFD, FloWorks & FloTHERM 1 May 22, 2011 08:27
Issue Involving Paraview MechE OpenFOAM 22 October 31, 2010 09:29
Memory issue - Suse 10 - Opterons Andy R FLUENT 1 June 23, 2008 14:44


All times are GMT -4. The time now is 17:50.