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

turbulent kinetic energy condition at wall

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 24, 2008, 16:24
Default turbulent kinetic energy condition at wall
  #1
johndeas
Guest
 
Posts: n/a
Hi,

a very simple question. I always thought that, since in DNS the trace of the reynolds stress tensor is null at wall, a suitable condition for RANS calculation would be to fix the value of k=0 there. However, I recently came across a thesis in which a guy using Fluent used a zero derivative for k at the wall, and also an OpenFOAM tutorial with the same condition. Boths use wall function. I wanted to know the logic behind this.

Thanks,

JD
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Natural convection in a closed domain STILL NEEDING help! Yr0gErG FLUENT 4 December 2, 2019 01:04
Production of Turbulent Kinetic Energy johndeas OpenFOAM 1 December 14, 2010 10:22
turbulent kinetic energy Ashwath Sundaresan Main CFD Forum 0 September 27, 2007 05:07
turbulent kinetic energy in 2D k-e model ph FLUENT 1 January 31, 2007 09:55
Turbulent Kinetic Energy Meri CFX 0 February 22, 2005 07:00


All times are GMT -4. The time now is 01:10.