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

How to access the subgrid-scale (SGS) stresses with LES (FLUENT) ?

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

LinkBack Thread Tools Search this Thread Display Modes
Old   May 12, 2011, 13:13
Question How to access the subgrid-scale (SGS) stresses with LES (FLUENT) ?
New Member
Join Date: Nov 2009
Posts: 10
Rep Power: 15
Marvin is on a distinguished road
Dear all,

I am running a LES computation with Fluent 6.3.
I am using the dynamic Smagorinsky SGS model.
I would like to access the SGS stresses, but apparently they are not directly accessible in Fluent, for plotting or exporting. When data sampling is enable, only the resolved Reynolds stresses are available.
Do I have to use the definition and a custom field function to compute them?
In this case I need to access the SGS kinetic energy, don't I?
Is there any other way?
More precisely, I would like to have the time-average SGS stresses. I suppose that this can be done via an UDF but how to access these data?
Any help, comment or suggestion will be appreciated.
Thank you.

Marvin is offline   Reply With Quote


fluent, large eddy simulation, subgrid scale stresses, udf

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
Switching on LES in 2D mode of fluent Josef Dubsky FLUENT 27 March 16, 2016 14:49
Access to PDF Spices in Fluent 13 Christoph_84 FLUENT 0 January 14, 2011 04:37
LES in Fluent and CFX taedeneo Main CFD Forum 2 May 6, 2008 14:53
LES mean value (in Fluent) jay Main CFD Forum 0 November 8, 2002 11:59
Doing LES with FLUENT Andre FLUENT 1 December 16, 1999 19:12

All times are GMT -4. The time now is 07:14.