CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

How to obtain the turbulent kinetic energy for large eddy simulation through FLUENT

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

Like Tree1Likes
  • 1 Post By LuckyTran

LinkBack Thread Tools Search this Thread Display Modes
Old   November 16, 2018, 22:05
Question How to obtain the turbulent kinetic energy for large eddy simulation through FLUENT
New Member
Join Date: Mar 2018
Posts: 8
Rep Power: 5
Huo zero is on a distinguished road
Dear all,
Thanks for your attention!
I have a question about how to get fluctuation velocity or the turbulent kinetic energy or root mean square velocity when using LES through FLUENT. Can anyone tell me something about this? or some idea about this?
Waiting for your reply eagerly!
Huo zero is offline   Reply With Quote

Old   November 18, 2018, 01:40
Senior Member
Lucky Tran
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 4,294
Rep Power: 51
LuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura about
Turn on data sampling for time statistics (it's close to the calculate button) and you'll get rmse's for the velocity. To get the turbulent kinetic energy though, you need to define a custom field function as the sum of the components (x,y,z).

However, watch out that the velocity in LES is the filtered velocity so this gives only the resolved part of the tke. You need to add the contribution of the subgrid scales too.
roi247 likes this.
LuckyTran is offline   Reply With Quote


fluent, les, rsm, tke

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
How to obtain turbulent kinetic energy data from LES model of Ansys CFX? rsin CFX 19 December 29, 2018 04:43
Kinetic energy in Fluent of CFD Post s.petley FLUENT 0 September 21, 2017 14:32
How do I obtain Void fraction from FLUENT Multiphase CFD Simulation? Greatness Fluent Multiphase 0 September 3, 2013 05:02
sgs turbulent kinetic energy blons Main CFD Forum 0 February 25, 2010 12:16
Why FVM for high-Re flows? Zhong Lei Main CFD Forum 23 May 14, 1999 13:22

All times are GMT -4. The time now is 06:00.