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

simulation of wall with holes

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 23, 2013, 21:48
Default simulation of wall with holes
  #1
New Member
 
Join Date: Aug 2012
Posts: 17
Rep Power: 5
bitacovir is on a distinguished road
I am trying to simulate wind blowing on a flat wall. 1.6m height and 4m length. (50mm thick).
Following several tutorials I could generate a mesh and insert a inflation layer on the surface of the wall. When I run a simulation the chart of convergence showed that RMS Residual Error Values have reduced to less than e-04 that I understand is good.
Then, I change the wall geometry with a wall with same size but including a vertical gaps producing a 20% of porosity in the wall.

I use the same parameters to produce the mesh and the inflation, but when I run the simulation the convergence remains between e-03 and e-04.
What do you think I can change or improve to results? Why is different when the surface of the geometry has holes?
bitacovir is offline   Reply With Quote

Old   October 24, 2013, 05:28
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,954
Rep Power: 85
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
FAQ: http://www.cfd-online.com/Wiki/Ansys...gence_criteria
ghorrocks is offline   Reply With Quote

Old   October 24, 2013, 06:54
Default
  #3
New Member
 
Join Date: Aug 2012
Posts: 17
Rep Power: 5
bitacovir is on a distinguished road
Quote:
Originally Posted by ghorrocks View Post
Thanks. I didn't know about this FAQ
bitacovir 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
Difficulty in calculating angular velocity of Savonius turbine simulation alfaruk CFX 8 December 3, 2013 17:51
Airfoil simulation using moving wall Alejandro NUMECA 9 November 4, 2008 03:00
How can i run a FSI simulation of a rotation wall romance CFX 0 November 27, 2007 08:35
small size holes simulation brian ko Phoenics 5 October 22, 2001 12:53


All times are GMT -4. The time now is 23:53.