CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM

problem with wallDist on yPlus

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

LinkBack Thread Tools Display Modes
Old   March 17, 2011, 04:34
Default problem with wallDist on yPlus
Join Date: Jan 2011
Posts: 73
Rep Power: 8
jms is on a distinguished road

In order to calculate yPlus I am using the code I upload as an attached file. The equation that you can find in the file yPlus.C uses a variable "d", i.e. the distance to the wall. I had a look at the values of this d. I expected them to be the same all over the airfoil I am computing (since I am using a mesh with constant 1st cell height of 2.75e-5). To be sure that this is constant after having converted it to OF, I checked that in a post processor and this 1st cell height is constant, so there are no "conversion issues"). :S

What I get is that they oscillates between 9e-6 and 1.3e-05. I don┤t like this because the value of the computed yPlus then is not perfect.

Can you tell me anything about this?




P.D.: BTW, if you want to know anything else about this yPlus tool I am using, the one I have uploaded, you can co to the thread, post number 5.
Attached Files
File Type: zip (2.9 KB, 18 views)
jms is offline   Reply With Quote

Old   October 14, 2011, 01:55
New Member
Join Date: Aug 2010
Posts: 17
Rep Power: 9
Saxwax is on a distinguished road
Please see the following link:

Post #18 is my guess on what may be happening.


Saxwax is offline   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
UDF compiling problem Wouter Fluent UDF and Scheme Programming 6 June 6, 2012 04:43
Incoherent problem table in hollow-fiber spinning Gianni FLUENT 0 April 5, 2008 10:33
natural convection problem for a CHT problem Se-Hee CFX 2 June 10, 2007 06:29
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 19:13
Problem in Tutorial problem of fluent Phanindra FLUENT 5 April 17, 2007 09:57

All times are GMT -4. The time now is 09:38.