CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CD

STAR-CD tutorial 16(LES of turbulent channel flow)

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 15, 2012, 15:17
Default STAR-CD tutorial 16(LES of turbulent channel flow)
  #1
yss
New Member
 
Yajuvendra Shekhawat
Join Date: Feb 2012
Location: State College, PA
Posts: 3
Rep Power: 14
yss is on a distinguished road
Hi,
I am trying to do tutorial 16.2(LES of turbulent channel flow). I am able to run the code successfully. But, while post processing I am using my stand alone code to average the velocity over each slice in y-direction by processing the exported tecplot data file. I am observing a 10% error in the results.
But, when I run the MACRO script given in the tutorial I get the correct results.
I tried to check the MACRO script and observed that while averaging the LES data the velocity is added for a cell set of 1350 for each y-slice and is being divided by (30x50=1500). I think this is where the 10% error is vanishing.
Did anybody had a similar problem? Does anybody know the reason behind it?
I even checked the velocity at the midplane which is over 21 m/s but in the plot from star-cd the maximum goes to about 19 only.
yss is offline   Reply With Quote

Old   October 15, 2012, 15:19
Default
  #2
yss
New Member
 
Yajuvendra Shekhawat
Join Date: Feb 2012
Location: State College, PA
Posts: 3
Rep Power: 14
yss is on a distinguished road
yss is offline   Reply With Quote

Reply


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
LES In Turbulent in channel flow pankaj saha Main CFD Forum 18 November 20, 2014 06:49
[Commercial meshers] Using starToFoam clo OpenFOAM Meshing & Mesh Conversion 33 September 26, 2012 05:04
references for how to maintain a constant flow rate in turbulent channel flow amirrstg Main CFD Forum 0 October 25, 2011 04:17
Natural convection - Inlet boundary condition max91 CFX 1 July 29, 2008 21:28
Reynolds and Turbulent flow Frederic Dubinski CFX 5 October 21, 2004 05:12


All times are GMT -4. The time now is 20:11.