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

How can I find the recommended y+ values for turbulence models?

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 12, 2019, 19:26
Default How can I find the recommended y+ values for turbulence models?
  #1
New Member
 
Join Date: Jul 2019
Posts: 27
Rep Power: 7
Bran is on a distinguished road
Hello,

How can I find the recommended y+ values for turbulence models such as realizable k-epsilon and SST k-omega?

Once I find these can I use them to calculate a first cell height during meshing?

Thank you.

Update: according to some material I found from ANSYS, walls can be resolved in two ways:
1. wall functions, where the y+ value lies between 30 and 300 (30<y+<300)
2. resolving the viscous sublayer, where y+ should remain at 1 or very close to 1.

It seems like there's no recommended y+ values for different turbulence models, instead for the strategy used to mesh the walls.

Last edited by Bran; July 13, 2019 at 10:57. Reason: update
Bran is offline   Reply With Quote

Reply

Tags
ansys, fluent, turbulence, y+ value


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
Velocity values are normal but pressure values are too big rv82 OpenFOAM Running, Solving & CFD 4 April 13, 2015 04:59
Minimum Recommended Yplus High-Re Turbulence Models minger OpenFOAM Running, Solving & CFD 2 August 16, 2013 10:29
Numerical errors in nested domain with pre-calculated boundary values Arnoldinho OpenFOAM Running, Solving & CFD 3 April 4, 2012 11:31
How to set reference values to find Cl, Cm... (3D) Cyril FLUENT 5 June 26, 2006 12:22
setting reference values to find Cd, Cl, Cm (3D) Jeff FLUENT 0 June 23, 2006 02:10


All times are GMT -4. The time now is 07:51.