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

Impact of Fluid Porosity

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 30, 2015, 09:06
Default Impact of Fluid Porosity
  #1
Member
 
Harry
Join Date: May 2013
Posts: 68
Rep Power: 4
star is on a distinguished road
Hi. I am studying about porous media modeling. From Ergun equation
Rv = [150*(1-e)^2/phi^2*D^2*e^3]
and
Ri = [2*1.75*(1-e)/phi*D*e^3]
where Rv and Ri are viscous resistance and inertial resistance, respectively, and they are input parameters into fluent for porous media. As can be seen these equations depend on Porosity (e).
My question is, if the above equations include "e" (porosity) then why in Fluent "Porous Zone" there is a separate input space for Fluid Porosity. Is this porosity different from the one in the equations?

I also modeled a 2d tube as porous media and assigned some fixed value to Rv and Ri. I checked with different "Fluid Porosity" but found no effect on results.
Please if someone can explain. Thanks
star 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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
Fluid Dynamics Eng - PAX Mixer - San Rafael, CA Gary Jong FLUENT 0 February 25, 2008 21:46
fluid structure interaction taru agrawal FLUENT 4 September 10, 2007 03:12
My Revised "Time Vs Energy" Article For Review Abhi Main CFD Forum 2 July 9, 2002 09:08
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11


All times are GMT -4. The time now is 22:10.