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

Is there any harm in y+

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 25, 2007, 19:19
Default Is there any harm in y+
  #1
jbb
Guest
 
Posts: n/a
For turbulence models with enhanced wall treatment, y+ should be on the order of 1-4. As I understand it this will put 1 grid point within the viscous sublayer (please correct me if I'm wrong). But what if the y+ value is less than 1, say .4 or lower. Should you strive to have at least y+ = 1? Or, if you're not so concerned about mesh size, is it ok to have y+ < 1?

Any feedback would be greatly appreciated.

Thanks,

jbb
  Reply With Quote

Old   June 26, 2007, 01:59
Default Re: Is there any harm in y+
  #2
sam
Guest
 
Posts: n/a
As i understand that there is no harm is less than 1 y+. But one thing should recofirmed that the there should be atleast 7 point in momentum boundary layer thickness.

plz check out some papers that how many nodes should be in the boundary layer.

Regards
  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



All times are GMT -4. The time now is 07:12.