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

CFX-Build 5.5.1

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 27, 2002, 04:30
Default CFX-Build 5.5.1
  #1
Nelson
Guest
 
Posts: n/a
Hello,

I've found there are new options in the Build 5.5.1. They are "Low/Medium/High Intensity and Eddy Viscosity Ratio" under the BCs/inlet/turbulence. I'd like to ask what the meanings of those ratios are. And are they related to Large Eddy Simulation (LES)?

Thanks for your help!

Merry X'mas & Happy New Year!

Nelson
  Reply With Quote

Old   December 30, 2002, 16:49
Default Re: CFX-Build 5.5.1
  #2
Neale
Guest
 
Posts: n/a
These are not related to LES at all. They are boundary conditions for the inlet turbulence levels. TI=Turbulent Intensity, EVR = Eddy viscosity ration (turbulent/molecular):

Low: TI=1%, EVR=1.0 Med: TI=5%, EVR=10.0 High: TI=10%, EVR=100.0

"Default" is different again. TKI=3.7% and the epsilon boundary condition depends on a local boundary length scale I think (look it up in the doc).

Neale.
  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
CFX pressure in Simulations problem nasdak CFX 1 April 14, 2010 13:22
CFX 5.5.1 Streamline Plot Satchit Panse CFX 3 March 8, 2005 11:58
CFX build 5.6 Richard CFX 8 September 10, 2003 12:20
Using Visual Fortran 5.0 in CFX 5.5.1 Amemda CFX 1 October 10, 2002 21:16
CFX 4.4 installation problem Pandu Sattvika CFX 1 December 1, 2001 04:07


All times are GMT -4. The time now is 05:44.