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

RSM convergence

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 10, 2008, 11:20
Default RSM convergence
  #1
khar
Guest
 
Posts: n/a
Hello I am simulating the flow in a hydrocyclone. I am using RSM with a single water phase. I have tried to take into account all the recomandations appearing in the Fluent doc; developed profiles at the inlet, first computation with the k-e model until convergence, and low under-relaxation factors. I have also checked that Y* is consistent with my choice of standard wall function (between 10 and 47). The probleme is that I am unable to obtain convergence. The residuals are oscillating between 10e-2 and 10e-5. I can send to anyone a picture on the residuals behaviour. Thanks.
  Reply With Quote

Old   May 11, 2008, 16:50
Default Re: RSM convergence
  #2
Valerio
Guest
 
Posts: n/a
they are often very difficult to converge. Read documentation about convergece strategies for RSM. It's often usefull do some iteration with k-epsilon and after use RSM. (in a case I've done also 50 initial iteration with euler equations)
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
URF and convergence in natural convergence Marie-Anne Main CFD Forum 11 September 11, 2009 11:07
convergence vijay FLUENT 6 February 1, 2006 04:04
convergence vijay Main CFD Forum 1 January 30, 2006 14:13
too bad convergence Davoche Main CFD Forum 2 November 20, 2005 06:08
About convergence LQ CFX 3 June 3, 2005 00:43


All times are GMT -4. The time now is 13:31.