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

axial fan convergence problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 23, 2013, 03:25
Default axial fan convergence problem
  #1
New Member
 
thomasesel
Join Date: Jul 2009
Posts: 13
Rep Power: 8
tongnan is on a distinguished road
Hello all,
i am simulating an axial fan with 1 passage (30 degree). The setting and method are as follows:

FLUENT14.5, sliding mesh, transient, pressure-based, compressible, SST-K-Omega, y+ ca. 2, fan 1000rpm, time step 2.5e-05, CFL=1.0. Inlet: mass flow rate 0.6kg/s, Outlet: pressure-outlet

my problem is, after calculation of 6 revolutions, the mass flow rate at outlet oscillates between 0.5-0.7kg/s. Can anyone give me suggestions to improve it?

Last edited by tongnan; February 25, 2013 at 04:13.
tongnan is offline   Reply With Quote

Old   February 25, 2013, 04:16
Default
  #2
New Member
 
thomasesel
Join Date: Jul 2009
Posts: 13
Rep Power: 8
tongnan is on a distinguished road
Hi,
Does anyone have the fan simulation experiences to improve the mass flow unbalance? Thank you!
tongnan 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
MRF Solver fan simulation - problem sivakumar FLUENT 0 February 15, 2013 04:26
Problem with fan interface Star ccm+ patrizio6823 Main CFD Forum 0 September 26, 2012 10:49
Convergence problem! Julian121 FLUENT 2 August 21, 2012 03:10
Submerged fin, Convergence problem supermouniette FLUENT 10 July 6, 2009 10:47
Convergence problem for P1 & Energy HP FLUENT 5 May 21, 2005 15:01


All times are GMT -4. The time now is 03:25.