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

Where to measure y+

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 19, 2008, 04:45
Default Where to measure y+
  #1
Ken-Robert Jakobsen
Guest
 
Posts: n/a
Hi,

Where should I calculate/report my y+ in for instance a backward-facing step flow, where the friction velocity (and thus y+) varies greatly throughout the domain due to boundary layer separation, reattachment and recovery. In the literature, people always report one single y+, but is this for instance taken at a specific point in the domain, is it the single highest y+ along the given wall, or maybe an average?

Thanks for any help!

Regards,

Ken-Robert
  Reply With Quote

Old   August 19, 2008, 19:25
Default Re: Where to measure y+
  #2
Lupco Dukovski
Guest
 
Posts: n/a
Take the maximum y+ value along the wall. This will give a good indication of the quality of the simulation.
  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
measure the exchange between two pipes Wedge23 CFX 0 September 30, 2011 04:04
How to measure total Heat Power myyahaha ANSYS 8 November 17, 2010 09:47
How to measure thrust ? Attesz CFX 4 January 13, 2010 07:17
pressure measure in centrifugal pump vanes Patricio Torrejon FLUENT 1 December 16, 2005 18:10
Add Measure Markings or Coordinates to the Contour Colin FLUENT 4 August 25, 2004 09:54


All times are GMT -4. The time now is 11:25.