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

mesh requirement for LES

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 5, 2004, 22:30
Default mesh requirement for LES
  #1
Jason
Guest
 
Posts: n/a
LES generally require finer mesh compared to RANS models,if this understanding is correct, what is the acceptable mesh size in the near wall region when I am using LES for engineering problems? thanks.
  Reply With Quote

Old   February 10, 2004, 16:48
Default Re: mesh requirement for LES
  #2
frederic Felteb
Guest
 
Posts: n/a
Hi there,

Usually you would want to use a mesh where y+=1 for the first point in the off-wall direction. Then depending on the type of flow, the requirement for the streamwise and spanwise directions can be more relaxed. For example, in a typical LES turbulent channel flow, you would use x+=50, z+=25 and y+=1

I hope this helps,

Sincerely,

Frederic Felten.
  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
[ICEM] Generating Mesh for STL Car in Windtunnel Simulation tommymoose ANSYS Meshing & Geometry 48 April 15, 2013 04:24
Number of cells in mesh don't match with size of cellLevel colinB OpenFOAM Native Meshers: snappyHexMesh and Others 9 November 2, 2011 03:50
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 11:55
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 18:10
unstructured vs. structured grids Frank Muldoon Main CFD Forum 1 January 5, 1999 10:09


All times are GMT -4. The time now is 00:01.