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

Nonnewtonian fluid modeling

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 16, 2006, 05:23
Default Nonnewtonian fluid modeling
  #1
adam
Guest
 
Posts: n/a
Hi all,

I am trying to model ice-cream flow in a branched ducts using Fluent. Ice cream is a viscoelastic substance. Do I need to model it as a viscoelastic fluid and use Polyflow or is it enough to model it with a generalized nonnewtonian model when the case is steady state and I am interested in the flow rates rather than in accurate velocity flow fields representation? I have learnt that high Weissenberg number can be the reference to this distinction but I couldn't find any information what is high We number. Do you have any sugestions about it and how do I choose a proper time scale to calculate the We number? There is a high slip velocity on the wall. Therefore do you have any suggestions about asignig wall boudary conditions? I have found that problems with convergence occur when switching into no-slip wall bc's for 3D case.

Regards, Adam

  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
modeling movement of body in fluid Hossein FLUENT 0 November 18, 2008 05:33
Fluid Dynamics Eng - PAX Mixer - San Rafael, CA Gary Jong FLUENT 0 February 25, 2008 21:46
Fluid domain creation for jet fan modeling hari FLUENT 0 November 7, 2007 02:25
nonnewtonian fluid M. Yinshi Main CFD Forum 0 July 25, 2004 22:32
Problem-Thermofluid Multiphase Fluid Modeling Ajit CD-adapco 1 September 6, 2002 18:45


All times are GMT -4. The time now is 17:04.