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

drag coeff to high - kOmegaSST turbulence model

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   January 26, 2011, 10:51
Default drag coeff to high - kOmegaSST turbulence model
  #1
Member
 
Martin
Join Date: Aug 2010
Location: Germany
Posts: 55
Rep Power: 15
RugbyGandalf is on a distinguished road
Dear Users,

i have a problem with the drag coefficient calculated by the kOmegaSST turbulence model with the simpleFOAM solver :-(

The aim is to get to know about the drag coefficient of a streamlined body and compare this results with the ones got by the same body out of a wind tunnel experiment. So in fact - compare reality an CFD

The coefficient i should get for cd is about 0.07, the one i got from my calculations is somewhat around 0.96...

I have calculated values for k and omega from the formulas out of the CFDWiki, but they seem to be incorrect - or a BC is the problem - i don't know

The eddy viscosity ratio i took was 1, but i don't know if this is correct for wind tunnel experiments...?

I will post my case files - maybe someone do have an idea...!?

Thank you very much in advance

Regards,

Martin
Attached Files
File Type: zip case4.zip (6.4 KB, 44 views)
RugbyGandalf 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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 05:36
turbulence model equation Andy Chen FLOW-3D 4 January 1, 2010 21:45
build your own turbulence model with buoyancy Thomas Baumann OpenFOAM 11 November 23, 2009 08:53
v2-f turbulence model in CFX? flga CFX 14 November 23, 2006 06:12


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