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

Solid fraction proflie about Eulerian model

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 12, 2010, 12:03
Default Solid fraction proflie about Eulerian model
  #1
New Member
 
Jihong Wang
Join Date: Mar 2010
Posts: 2
Rep Power: 0
wangjihong0407 is on a distinguished road
Hello,
Recently I have used Eulerian Model to calculate the horizontal pipe flow about solid-liquid flow. The flow is laminar and steady.But I found some questions during the simulation. I found the solid fraction profile at the top of the pipe is unsteady. That is to say, When the solid phase velocity profile is steady during the fully developed flow region, the fraction of solid phase profile is not steady. And it changes along the pipeline. I am confused. How can I get the steady result ?
Thanks in advance!

Jihong Wang
wangjihong0407 is offline   Reply With Quote

Old   October 12, 2010, 13:39
Default
  #2
New Member
 
Grzegorz Kondora
Join Date: Oct 2010
Posts: 13
Rep Power: 7
kondora is on a distinguished road
If you are using steady solver - it seems that this is solution convergence problem - possible solution: refine the mesh and/or use higher discretization schemes. Solution may behave unsteady when using steady solver when the physical phenomena being under consideration is physically unsteady (i.e. is unsteady in reality). I'd rather recommend to use unsteady solver and average solution using flow statistics. Hope this helps.
kondora is offline   Reply With Quote

Old   October 14, 2010, 01:21
Default
  #3
New Member
 
Jihong Wang
Join Date: Mar 2010
Posts: 2
Rep Power: 0
wangjihong0407 is on a distinguished road
Kondora,

Thanks for your advice. I will try it.
wangjihong0407 is offline   Reply With Quote

Old   July 17, 2011, 15:27
Default
  #4
New Member
 
sunny
Join Date: Jan 2011
Posts: 29
Rep Power: 7
sandisk is on a distinguished road
Hi, even i am trying to work on simulation of slurry flow in horizontal pipeline. I was wondering what were the boundary conditions you used. Was it velocity inlet and pressure outlet. And did you use, Unsteady state solver ? Your reply would be greatly appreciated.Thanks.
sandisk 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
Error message: Insufficient Catalogue Size Paresh Jain CFX 31 June 7, 2016 21:31
Puzzling about the "diameter" in Eulerian Model yuanyuan FLUENT 2 October 22, 2009 08:38
One-way coupling in Eulerian -Eulerian model swati_mohanty FLUENT 0 October 8, 2009 00:44
Eulerian Model Hassan FLUENT 1 September 4, 2006 08:02
Packing limit management in the Eulerian model ap FLUENT 2 September 16, 2005 17:46


All times are GMT -4. The time now is 01:30.