CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

calculate forces in LES model

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 19, 2021, 06:02
Post calculate forces in LES model
  #1
New Member
 
aref
Join Date: Oct 2019
Posts: 25
Rep Power: 7
aref_ehteshami is on a distinguished road
Hello guys
I'm working on a 3d wing and I have employed the LES model to calculate forces and momentum that are exerting on my body.
the question is should I report them as a time-averaged parameter or report them as an instantaneous parameter?
and if I should use time-averaged how I can select it on sampling option? because it is not already available in the menu for the force.
Thank you in advance.
aref_ehteshami is offline   Reply With Quote

Old   May 19, 2021, 06:07
Default
  #2
Senior Member
 
sbaffini's Avatar
 
Paolo Lampitella
Join Date: Mar 2009
Location: Italy
Posts: 2,195
Blog Entries: 29
Rep Power: 39
sbaffini will become famous soon enoughsbaffini will become famous soon enough
Send a message via Skype™ to sbaffini
Quote:
Originally Posted by aref_ehteshami View Post
Hello guys
I'm working on a 3d wing and I have employed the LES model to calculate forces and momentum that are exerting on my body.
the question is should I report them as a time-averaged parameter or report them as an instantaneous parameter?
and if I should use time-averaged how I can select it on sampling option? because it is not already available in the menu for the force.
Thank you in advance.
If you need the average force or the instantaneous one is something only you could know. In general, for statistically steady cases, only average quantities are of interest. If your software doesn't allow exporting such averages, your only chance is to perform them by yourself with some very simple script, say, in Matlab, or whatever programming language you are comfortable in.
sbaffini is offline   Reply With Quote

Old   May 23, 2021, 11:26
Default
  #3
New Member
 
aref
Join Date: Oct 2019
Posts: 25
Rep Power: 7
aref_ehteshami is on a distinguished road
Thank you sbaffini . yes, my problem is statistically steady and it seems that I should take average in another program like Matlab.
aref_ehteshami is offline   Reply With Quote

Reply

Tags
fluent 14 to fluent 15., force report, les model


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
The CoP Does not exist: Validating Aerodynamic forces through a "line of action" ds4719 Main CFD Forum 14 February 18, 2022 19:05
SpalartAllarmasIDDES LES model mmmn036 OpenFOAM Running, Solving & CFD 1 April 23, 2014 21:01
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
How to include lift forces/wall lubrication forces in the MIXTURE multiphase model? hohomm FLUENT 0 December 17, 2009 06:45
2-equation model of LES and source code M.R.Hadian Main CFD Forum 0 February 3, 2002 06:00


All times are GMT -4. The time now is 03:01.