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

UDF Wall functions conundrum

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 18, 2011, 20:25
Unhappy UDF Wall functions conundrum
  #1
Member
 
ralph
Join Date: Jun 2010
Location: Calgary Alberta
Posts: 38
Rep Power: 16
syler3321 is on a distinguished road
Send a message via Skype™ to syler3321
Can anybody please tell me what DUPLUS is the the following UDF file?
http://my.fit.edu/itresources/manual...udf/node52.htm

I am trying to model my wall function such that in the log-law region,
u+=(1/kappa)*log(y+/y0+)
where y0+ is z0*utau/viscosity.
z0 is just some value i will input.
Can anybody help me program this macro? or at least guide me how to do it? i have read the UDF manual and i'm still clueless.

Please advice

thank you
syler3321 is offline   Reply With Quote

Reply


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
UDF to Access Wall Normal Concentration Gradient Daniel Tanner Fluent UDF and Scheme Programming 4 February 18, 2015 15:35
help with wall functions dshawul Main CFD Forum 6 May 23, 2011 04:12
wall boundary condition in UDF ssamton FLUENT 0 January 31, 2011 04:07
Heat Transfer using Wall Functions Tristan CFX 0 May 12, 2009 22:01
UDF for fluxes normal to a wall Leverkin FLUENT 0 December 10, 2007 13:04


All times are GMT -4. The time now is 11:35.