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

backward facing step

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 23, 2008, 21:19
Default backward facing step
  #1
skk
Guest
 
Posts: n/a
Hi ,

I was doing comparison of different turbulence models like k-w, k-e and spalart almaras model using fluent. I am planning ot validate my numerical results using the paper by driver and seegmuller. the paper said that the Reynolds value based on momentum thickness is 5000. It also specified the displacement thickness of 1.9 cm. The paper hasnt mentioned any values for turbulent intensity.

hw wud I calculate the values of k , w and e for the above models? also, should I give the velocity input at x/H=-4 ? or shud I go even further upstream at a distance of x/H=-12?

I know this is a fundamental problem. I am sure someone out there must have dealt with this same problem.

thanks in advance.

san
  Reply With Quote

Old   February 27, 2011, 03:40
Default
  #2
Senior Member
 
maysmech's Avatar
 
Join Date: Jan 2010
Posts: 347
Blog Entries: 2
Rep Power: 17
maysmech is on a distinguished road
Quote:
Originally Posted by skk
;150257
Hi ,

I was doing comparison of different turbulence models like k-w, k-e and spalart almaras model using fluent. I am planning ot validate my numerical results using the paper by driver and seegmuller. the paper said that the Reynolds value based on momentum thickness is 5000. It also specified the displacement thickness of 1.9 cm. The paper hasnt mentioned any values for turbulent intensity.

hw wud I calculate the values of k , w and e for the above models? also, should I give the velocity input at x/H=-4 ? or shud I go even further upstream at a distance of x/H=-12?

I know this is a fundamental problem. I am sure someone out there must have dealt with this same problem.

thanks in advance.

san
Hi,

I have these questions.

Any help will be appreciated.

Regards.
maysmech 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
Backward facing step sega OpenFOAM Running, Solving & CFD 8 June 2, 2011 01:07
DNS for backward-facing step using CFX Sungho Yoon CFX 10 August 4, 2008 06:32
Backward Facing Step Jimmy Main CFD Forum 3 July 25, 2004 23:37
Backward facing step Chris De Langhe FLUENT 1 March 5, 2000 17:04
Backward facing step 2 Chris De Langhe FLUENT 0 February 28, 2000 11:20


All times are GMT -4. The time now is 03:08.