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

someone to answer..Difference between LES and RANS

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 2, 2005, 09:02
Default someone to answer..Difference between LES and RANS
  #1
Nik
Guest
 
Posts: n/a
Hi all, Although I have tried to understand at my own the difference between LES and RANS in layman or simple terms but am unable. I shall be highly grateful if someone can elucidate the basic difference with respect to followings.. a) HOW LES is capturing the unsteadiness of the flow in better terms than RANS? (turbulence modelling and subgrid modelling) b) For a same baseline grid, is LES suppose to give better results for some turbulent flow in near wall region? c) Where is the difference in coding, if i am using flux splitting method for RANS (with KW turbulence model) and want to switch to LES for better flow prediction? Cheers and see ya..
  Reply With Quote

Old   September 4, 2005, 09:38
Default Re: someone to answer..Difference between LES and
  #2
D.Pavitran
Guest
 
Posts: n/a
Hi nik,

I hope that, you can get the answers for your query from the following chalmers weblink.

http://www.tfd.chalmers.se/doct/comp...ure_notes.html

Just click on the topic LES, in this weblink.

regards/ pavitran
  Reply With Quote

Old   September 4, 2005, 12:40
Default with Regards to DES
  #3
Endee
Guest
 
Posts: n/a
Do we use the same equations for DES with only difference of Turbulence model in RANS and Subgrid Scale model in LES domain?

  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
LES vs RANS student2 Main CFD Forum 57 March 3, 2020 10:54
RANS to LES: Flame dissapears?? LB Main CFD Forum 4 September 6, 2007 19:53
Laminar Flamlet RANS to LES LB FLUENT 0 September 5, 2007 06:35
Mapping RANS data onto an LES christian OpenFOAM Running, Solving & CFD 0 April 13, 2007 06:31
RANS results for LES Li Yang Main CFD Forum 5 June 17, 2002 06:34


All times are GMT -4. The time now is 13:56.