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

URANS and Transient Simulations

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 1, 2003, 03:54
Default URANS and Transient Simulations
  #1
bob
Guest
 
Posts: n/a
Hi, I was wondering if someone could explain something to me. I'm a CFX user, but decided to post the question on this forum as it is a little more general. Can someone explain to me th edifference between URANS simulations and a Transient RANS simulation (ideally with respect to the CFX code). Also how does LES fit into this picture of simulation types.

As I understand it we have at one level RANS simulations that use turbulence models then we have LES simulations that solve the turbulence at large scales but at small (subgrid) scales it uses a model to calculate the turbulence. Then we ave Unsteady RANS simulations. What are these ? Are they just RANS simulations with some sort or fluctuating term added to the turbulence model (which is time dependent ?)?

Any help would be appreciated. Cheers and thanks

Bob
  Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
URANS of lobed shear layer jbrinker CFX 5 February 2, 2011 13:28
URANS in ANSYS CFX brissyben CFX 3 October 6, 2009 17:35
URANS / RANS??? FELIPE Main CFD Forum 0 April 1, 2005 20:10
URANS and PHANS ?? gorka Main CFD Forum 0 November 11, 2002 08:12


All times are GMT -4. The time now is 18:09.