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

Wall shear stress problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 8, 2011, 07:50
Default Wall shear stress problem
  #1
Member
 
jk
Join Date: Jun 2009
Posts: 64
Rep Power: 8
jyothishkumar is on a distinguished road
Hi all,

I have written a code for turbulent flow with k epsilon turbulence model. My exit profile is coming as expected (lower than that of laminar profile). But somewhere in the middle of the channel my velocity (mean at the centre) is increasing and then it is decreasing towards the exit. I just checked for the wall shear stress. Its value is in between 2 and 3 and i compared the case with fluent run also and found that the value of wall shear stress is more in my case (between 0.4 and 0.5 in fluent). Also the pressure drop is more and there is a difference of around 300 pascal between my code and the fluent. Can someone help to resolve this problem. Is there any formulation mistake that i have done.

Many thanks

jyothish
jyothishkumar 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
Natural convection in a closed domain STILL NEEDING help! Yr0gErG FLUENT 3 June 12, 2013 02:12
Defined Wall Shear Stress Boundary Condition mart.hein OpenFOAM Programming & Development 1 April 14, 2011 12:44
Post processing - Wall shear stress Carlo CD-adapco 1 March 4, 2009 08:35
Wall Shear Stress Ferdous Main CFD Forum 2 November 29, 2005 21:26
Macro to set Wall Shear Stress Satish FLUENT 4 November 26, 2003 15:46


All times are GMT -4. The time now is 06:33.