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

Porous Media

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 12, 2004, 11:58
Default Porous Media
  #1
Christian Cordeiro
Guest
 
Posts: n/a
Hi, I am working with CFX 5.6 and I want to simulate a bank of tubes using Porus Media and I have some questions about Porous Media x CFX: 1- Is necessary create a subdomain to define a region with Porous Media ? 2- If yes, Which Boundary Type do I must set (in,out,wall..) ? 3- How can I calculate the Porous coefficients in the CFX (I didnīt find sufficient informations) ?

Thank you
  Reply With Quote

Old   January 13, 2004, 04:56
Default Re: Porous Media
  #2
Forrest
Guest
 
Posts: n/a
Hi, Christian

There are some comments about porous media in CFX community site which might be helpful.

http://www-waterloo.ansys.com/cfxcom...a_in_CFX-5.htm

You probably need to set up a subdomain(s) to specify the resistances.

Regards Forrest
  Reply With Quote

Old   January 16, 2004, 19:57
Default Re: Porous Media
  #3
Jeff
Guest
 
Posts: n/a
Christian,

Yes, you need a subdomain to apply the resistances. CFX-Pre will only give you a source term panel if a subdomain is defined for your porous media.

My personal thoughts on walls within a porous region, are that the pressure drop is pretty much accounted for by the resistance factors you are setting. Any additional boundary layer effects near the wall are either a) much smaller than the resistance effects or b) already included in your resistance factor. It doesn't seem right to let the code develop a wall profile, when in actuality the porous media would break this up anyway.

For resistances through all kinds of porous media (screens, tubes, plates), look in references by Idelchek and/or Blevins.

Jeff
  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
Porous media setup issues in Fluent Bernard Van FLUENT 26 July 24, 2015 18:24
How to model granular flow through porous media Axius FLUENT 2 August 7, 2014 10:34
Multiphase Porous Media Flow - Convergence Issues VT_Bromley FLUENT 5 March 23, 2011 11:38
species mass source in porous media ? PK FLUENT 0 February 16, 2007 12:12
porous media: Fluent or Star-CD? Igor Main CFD Forum 0 December 5, 2002 16:16


All times are GMT -4. The time now is 07:25.