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

Turbulence Intensity and Length

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 10, 2007, 10:37
Default Turbulence Intensity and Length
  #1
airfoil
Guest
 
Posts: n/a
Hi All,

May I know what is the criteria or assumption I have to follow for Inlet and Pressure boundary's Turbulence Intensity and Length? I know T.I is in percentage term but how do I decide the value? Does it varied from model to model? Thank you in advance!
  Reply With Quote

Old   April 10, 2007, 13:40
Default Re: Turbulence Intensity and Length
  #2
Jonas Larsson
Guest
 
Posts: n/a
There is a bit written about this in CFD-Wiki. You can find it here:

http://www.cfd-online.com/Wiki/Turbu...ary_conditions
  Reply With Quote

Old   April 10, 2007, 20:35
Default Re: Turbulence Intensity and Length
  #3
airfoil
Guest
 
Posts: n/a
Jonas,

Thank you very much! Appreciate!
  Reply With Quote

Old   April 11, 2007, 19:29
Default Re: Turbulence Intensity and Length
  #4
EJAZ
Guest
 
Posts: n/a
Question: How to specify the inflow turbulence? Answer: The turbulent kinetic energy can be estimated as follows , where x is the velocity pulsation amplitude relative to the mean flow velocity V; The rate of the turbulent energy dissipation is estimated from , where μ is the dynamic molecular viscosity, N = 100 is a parameter.

for details http://www.fv-tech.com/index.php?id=73
  Reply With Quote

Old   April 12, 2007, 02:47
Default Re: Turbulence Intensity and Length
  #5
airfoil
Guest
 
Posts: n/a
thank you EJAZ
  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
Turbulence Intensity Michael FLUENT 4 August 5, 2008 15:22
Turbulence intensity and length scale eslam CFX 3 January 14, 2008 17:37
Turbulence intensity?? KC Siemens 0 July 19, 2007 19:41
Turbulence Intensity Luis FLUENT 2 June 28, 2005 15:29
Turbulent intensity length KIAN FLUENT 2 February 24, 2000 21:43


All times are GMT -4. The time now is 11:43.