CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

Stress-Blended Eddy Simulation questions

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 17, 2016, 05:01
Default Stress-Blended Eddy Simulation questions
  #1
siw
Senior Member
 
Stuart
Join Date: Jul 2009
Location: Portsmouth, England
Posts: 739
Rep Power: 26
siw will become famous soon enough
Hi,

What are the underlying RANS and LES models that are used for the Stress-Blended Eddy Simulation (SBES) model? I think it is SST (without any advanced options included) for the RANS but I do not know the LES SGS model? Also, in CFX-Pre only one advection scheme can be selected by the User in the Solver Control, I selected the High Resolution scheme because I assume that CFX will automatically switch the advection scheme to the bounded central difference scheme in the LES region, is that a correct assumption? I do not see how the User can select the advection scheme of the RANS and LES regions separately.

I would like to plot the eddy viscosity ratio (\mu_{t}/\mu) on a velocity.invariant.Q iso-surface to show the turbulence structures. However, in CFD-Post there are both two variables called Eddy Viscosity and LES viscosity, which should be used in the eddy viscosity ratio? Also in CFD-Post there is the variable Blending Function for DES suitable for observing the flowfield regions in RANS and LES modes when using SBES?

Thanks
siw is offline   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
Pressure drop in pipe flow with Large Eddy Simulation xerox FLUENT 1 October 16, 2019 09:55
Questions about eddy cfdmms Main CFD Forum 8 December 24, 2013 02:01
Eddy viscosity hypothesis versus Reynolds stress models JuPa ANSYS 0 August 12, 2013 07:20
Questions about the Reynolds stress model empirer2002 Main CFD Forum 1 January 5, 2006 08:37
Large Eddy simulation Andreas Hauser Main CFD Forum 1 May 20, 2000 21:33


All times are GMT -4. The time now is 22:16.