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

Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff

Register Blogs Community New Posts Updated Threads Search

Like Tree3Likes
  • 1 Post By SS460
  • 1 Post By A_Lyaskin
  • 1 Post By A_Lyaskin

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   September 15, 2011, 15:50
Default Help in porosity for knitted fabric??? Linear or Quadratic resistance coeff
  #1
New Member
 
Join Date: Sep 2011
Posts: 11
Rep Power: 14
SS460 is on a distinguished road
Hi,
For knitted fabric having porosity of 30 and 50%
similar to these photos



Any suggesions of resonable values for
Linear or Quadratic resistance coefficients?
or permeability
I need these values to define the porous material.
I have spent considerable time searching for any useful literature for this issue.

What is the range of values you expect would be appropriate for such fabric?
For example: Quadratic resistance coefficients = 300 kg/m^4?

Is it possible to calculate these values?
I have gone through almost all threads regarding above parameters in this forum,
I have been in this link too:
http://www.cfd-online.com/Wiki/Fluen...e_drop_data.3F

but the problem is that I don't have and can't perform experiment to obtain the required data.

Could obtaining the loss coefficient K_loss and head loss be of any help?
using this link
http://www.thermal-wizard.com/tmwiz/

Regards
vbnhfylbh likes this.
SS460 is offline   Reply With Quote

 


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Quadratic resistance Coefficient Ramana CFX 4 November 26, 2012 16:25
Quadratic Resistance Coefficient when energy source added. JoFFe CFX 3 October 27, 2010 08:42
solution diverges when linear upwind interpolation scheme is used subash OpenFOAM 0 May 29, 2010 01:23
Quadratic Resistance Coefficient Ramana CFX 0 January 2, 2006 03:43
quadratic resistance co-efficient praveen rajaperumal CFX 2 May 18, 2004 17:16


All times are GMT -4. The time now is 03:20.