CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Wall units.

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

LinkBack Thread Tools Display Modes
Old   October 13, 2004, 14:21
Default Wall units.
Posts: n/a
When dealing with backward facing step problems, What are "wall units"? How do they relate the grid spacings?
  Reply With Quote

Old   October 14, 2004, 09:57
Default Re: Wall units.
Posts: n/a
No such terms in general textbooks. You may consult specific references.
  Reply With Quote

Old   October 14, 2004, 21:49
Default Re: Wall units.
Posts: n/a
Probably, when you measure the length of the inverse flow zone in units of height of the breakaway.
  Reply With Quote

Old   October 15, 2004, 06:25
Default Re: Wall units.
Posts: n/a
I guess you are talking about Y+ values. If so, due to de-attachment, there is no meaningfull definition when dealing with steps. I would use same boundary layer mesh as for the incomming flow. For in-core flow I would define the mesh based on re-atachment length or mixing layer thickness (depending on flow behavior) Hope this helps
  Reply With Quote


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
Natural Convection over a vertical wall Sireesha Pasari FLUENT 2 July 15, 2012 16:31
Influece of wall velocity in the main flow marvin CFX 0 March 22, 2008 03:05
AMG versus ICCG msrinath80 OpenFOAM Running, Solving & CFD 2 November 7, 2006 16:15
Wall functions? Pr Main CFD Forum 7 April 8, 2004 06:15
Quick Question - Wall Function D.Tandra Main CFD Forum 2 March 16, 2004 05:29

All times are GMT -4. The time now is 06:53.