CFD Online Logo CFD Online URL
Home > Forums > FLUENT

porous media with variable porosity

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

LinkBack Thread Tools Display Modes
Old   November 25, 2006, 18:53
Default porous media with variable porosity
Kevin A.
Posts: n/a
Hi all, hope someone can guide me. I am trying to implement a porous media model with random porosity using the Eulerian model, so far I have implemented the initial porosity distribution modifying an example UDS. My problem is, what do I have to do to keep the porosity fixed during transient calculations? by using a UDS so the porosity distribution is read at every step?(that seems to me quite inefficient to say the least)

Please guide Thanks in advance Kev
  Reply With Quote

Old   December 7, 2006, 23:43
Default Re: porous media with variable porosity
Posts: n/a
Hello Kevin, I am working on a problem I think is similar to yours, I have a 2D cylinder with a moving top wall (only moving down) and a solid stationary bottom wall, the 2 walls on the sides are pressure outlet boundary conditions. in the interior of the cylinder, I want to have a porous media (can I also add fluid in the porous media). As the cylinder comes down, the porosity should should decrease (does fluent do this automatically internally or do I have to define a UDF), as a result fluid comes out through the presure outlet boundary conditions. I have been reading fluent tutorials and so on. Can this be done and can someone help me with this.

Thank you
  Reply With Quote

Old   December 8, 2006, 04:53
Default Re: porous media with variable porosity
Ralf Schmidt
Posts: n/a
Hi Kevin,

I was trying to set a porosity distribution with the example udf also! But somehow, i didn't succseed.

Could you please send me the udf you are using?? To:

Thanks a lot

  Reply With Quote

Old   December 24, 2006, 11:56
Default Re: porous media with variable porosity
Posts: n/a
Dear, I want to work on project using fluent but no idea about the capability of such soft for porous media modeling.

  Reply With Quote


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 29 January 26, 2017 05:09
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
porous media: Fluent or Star-CD? Igor Main CFD Forum 0 December 5, 2002 16:16
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 21:09

All times are GMT -4. The time now is 00:16.