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

turbulent scale

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 22, 2007, 00:35
Default turbulent scale
  #1
cfddummy
Guest
 
Posts: n/a
Hi

I am now doing analysis on flow in a pipe by using k-epsilon RNG method. I understand that in normal practice, people always set turbulent length scale to about 10% of the inlet diameter of inlet.

My question is, let say if the pipe is symmetry and I only do calculation on half of the pipe, should I use diameter of inlet, or radius of radius in determining my turbulent length scale?
  Reply With Quote

Old   January 24, 2008, 20:37
Default Re: turbulent scale
  #2
Andrea
Guest
 
Posts: n/a
Use the real geometry data, so ther real diameter, to determine the lenght scale...you model just an half of the pipe for convenience but the model intrinsecally take account of the complete geometry (cyclic boundaries).
Bye!
Andrea
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Turbulent inlet fluctuation scale christian OpenFOAM Running, Solving & CFD 2 November 3, 2023 08:14
Turbulent length-scale Ville Main CFD Forum 23 January 6, 2011 22:28
how to find turbulent length scale ?? kapil FLUENT 0 January 20, 2009 13:10
turbulent length scale Cathy FLUENT 1 July 9, 2003 08:13
Turbulent Length Scale James Date Main CFD Forum 6 May 3, 2000 09:10


All times are GMT -4. The time now is 03:30.