CFD Online Logo CFD Online URL
Home > Forums > FLUENT

UDF Wall functions. ANY EXPERTS?

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

LinkBack Thread Tools Display Modes
Old   June 16, 2011, 17:29
Default UDF Wall functions. ANY EXPERTS?
Join Date: Jun 2010
Location: Calgary Alberta
Posts: 38
Rep Power: 7
syler3321 is on a distinguished road
Send a message via Skype™ to syler3321
Can somebody tell me how i can view macros in Fluent? i need to modify the wall functions to atmospheric boundary flows. When i looked at the example in DEFINE_WALL_FUNCTIONS, i realised that there are many reserved names for the variables Fluent uses. For example, UPLUS_LAM is the u+ in the laminar region.
I need to change the way Fluent defines Y plus. Instead of incorporating roughness height, i want it to use aerodynamic roughness length. And also, what is the reserved name for wall shear stress in the macros. Anybody knows?
syler3321 is offline   Reply With Quote

Old   November 9, 2014, 23:15
Default hi
Qureshi M Z I
Join Date: Sep 2013
Posts: 60
Rep Power: 4
m zahid is on a distinguished road
have you figure out the problems of UDF. can you please share the UDF of wall function with me for reference . i want to modified the wall function but i dont know the basics.
here is my email.
m zahid 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 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 03:12
Wall functions QuangDang Main CFD Forum 0 March 11, 2011 00:30
wall boundary condition in UDF ssamton FLUENT 0 January 31, 2011 04:07
Heat Transfer using Wall Functions Tristan CFX 0 May 12, 2009 21:01

All times are GMT -4. The time now is 12:32.